Global Free Energy Blog

Research update

The relatives finally left. I’m a bit sluggest lately, and will not spend much time on the new diode setup over the next few days, and will work on my other project that has nothing to do with research. Here’s a updated list of my shopping cart. If anyone has a diode recommendation they would like tested then please contact me. It should be a *new* diode.

1
08N6678
CREE
XREROY-L1-0000-00801     Led Lamp; LED Color:Royal Blue; Viewing Angle:100°; Forward Current:1000mA; Forward Voltage:3.7V; Luminous Flux Typ:300lm; Length/Height, External:4.4mm ;RoHS Compliant: Yes     Yes     3
$7.75      
$7.75

Line Note:    
2
27K2383
OPTEK
OPV380     Laser Diode; Wavelength:850nm; Output Power:1.5mW; Laser Safety Class:Class 1M; Beam Angle:20°; Operating Temperature Range:-40°C to +85°C; Current Rating:20mA; Leaded Process Compatible:Yes ;RoHS Compliant: Yes     Yes     25
$6.53      
$6.53

Line Note:    
3
02P7197
CREE
XREGRN-L1-R250-00P01     LED Lamp; LED Color:Green; Viewing Angle:100°; Forward Current:700mA; Forward Voltage:3.5V; Luminous Flux Typ:67.2lm; Wavelength:535nm ;RoHS Compliant: Yes     Yes     353
$5.30      
$5.30

Line Note:    
4
89M5416
V-LED
9900-1201-13     LED Chip; LED Color:Red; Viewing Angle:130°; Forward Current:750mA; Forward Voltage:230V; Luminous Flux Typ:95lm; Operating Temperature Range:-40°C to +85°C; Wavelength:625nm         36
$4.36      
$4.36

Line Note:    
5
74M5710
MULTICOMP
1N4148WS     ; Forward Current Avg Rectified, IF(AV):150mA; Repetitive Reverse Voltage Max, Vrrm:100V; Forward Voltage Max, VF:1V; Forward Surge Current Max, Ifsm:350mA; Termination Type:SMD; Package/Case:2-SOD-323; No. of Pins:2 ;RoHS Compliant: Yes     Yes     2759
$0.040      
$2.00

Line Note:     Substitute Products Available
6
26K7479
LITTELFUSE
SMCJ440CA     Diode; Reverse Stand-Off Voltage, VRWM:440V; Breakdown Voltage Max:543V; Breakdown Voltage Min:492V; Clamping Voltage Max, Vc:713V; Diode Configuration:Bidirectional; Peak Pulse Power Dissipation, Pppm:1500W; Termination Type:SMD ;RoHS Compliant: Yes YesX     2755
$0.519      
$0.52

Line Note:     Substitute Products Available RoHS Compliant
7
45J2440
ON SEMICONDUCTOR
1SMB33AT3G     Transient Voltage Suppressor (TVS) Diode; Reverse Stand-Off Voltage, VRWM:33V; Breakdown Voltage Max:38.65V; Clamping Voltage Max, Vc:53.3V; Package/Case:SMB; Breakdown Voltage, Vbr:38.65V; Capacitance, Cd:510pF ;RoHS Compliant: Yes     Yes     2409
$0.119   Promotional price    
$0.12

Line Note:    
8
99K2203
AVAGO TECHNOLOGIES
HSMP-389Y-BLKG     RF Switching Pin Diode in SOD-523 Package.; Package/Case:SOD-523; Breakdown Voltage Max:100V; Capacitance, Ct:0.2pF; Forward Current:1A; Series Resistance @ If:2.5ohm; Polarization:Common Anode ;RoHS Compliant: Yes     Yes     90
$0.127      
$0.13

Line Note:    
9
74K5308
AVAGO TECHNOLOGIES
HSMP-386Z-BLKG     General Purpose Pin Diode in Surface Mount SOD-323 Package; Package/Case:SOD-323; Breakdown Voltage Max:50V; Capacitance, Ct:0.2pF; Forward Current:1A; Series Resistance @ If:1.5ohm; Polarization:Common Cathode ;RoHS Compliant: Yes     Yes     229
$0.279      
$0.28

Line Note:    
10
63J9347
AVAGO TECHNOLOGIES
HSMP-386B-BLKG     RF Pin Diode; Center Frequency (Fc):318GHz; Package/Case:SOT-323; Breakdown Voltage Max:200V; Capacitance:0.2pF; Capacitance, Ct:0.25pF; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes; Reverse Recovery Time:80ns ;RoHS Compliant: Yes     Yes     25
$0.456      
$0.46

Line Note:    
11
25M7657
MULTICOMP
BA159     Diode; Forward Current Avg Rectified, IF(AV):1A; Repetitive Reverse Voltage Max, Vrrm:1000V; Forward Voltage Max, VF:1.3V; Package/Case:DO-41; Current, Ifs max:150A; Forward Current Average:1A; Forward Voltage at If:1.3V ;RoHS Compliant: Yes     Yes     257
$0.037      
$0.04

Line Note:     Substitute Products Available RoHS Compliant • Accessories Available
12
87K6743
ON SEMICONDUCTOR
BAL99LT1G     Diode; Diode Type:Small Signal; Forward Voltage Max, VF:1250V; Reverse Recovery Time, trr:6ns; Package/Case:3-SOT-23; No. of Pins:3; Leaded Process Compatible:Yes ;RoHS Compliant: Yes     Yes     12233
$0.039      
$0.04

Line Note:     Substitute Products Available RoHS Compliant • Accessories Available RoHS Compliant
13
37K9330
NXP
BAS521     DIODE, SWITCHING, SOD-523; Diode Type:Small Signal; Voltage, Vrrm:300V; Current, If AV:250A; Current, Ifsm:4.5A; Time, trr Typ:16ns; Voltage, Vf Max:1V; Temperature, Tj Max:150°C; Termination Type:SMD; Temperature, Operating ;RoHS Compliant: Yes     Yes     1040
$0.103      
$0.10

Line Note:    
14
32C9539
VISHAY SEMICONDUCTOR
BZG03C270-TR     Zener Diode; Zener Voltage Typ, Vz:270V; Power Dissipation, Pd:3W; Package/Case:DO-214; Breakdown Voltage Max:251VDC; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes; Vz Test Current, Izt:2mA ;RoHS Compliant: Yes     YesX     9051
$0.188      
$0.19

Line Note:    
15
27H4633
VISHAY GENERAL SEMICONDUCTOR
RGP02-20E/23     Fast Recovery Power Rectifier; Repetitive Reverse Voltage Max, Vrrm:2000V; Forward Current Avg Rectified, IF(AV):0.5A; Forward Surge Current Max, Ifsm:20A; Reverse Recovery Time, trr:300ns; Forward Voltage Max, VF:1.8V ;RoHS Compliant: No     No     1134
$0.156      
$0.16

Line Note:    
16
26K4532
ON SEMICONDUCTOR
MMBD452LT1G     Diode; Diode Type:Schottky; Repetitive Reverse Voltage Max, Vrrm:45V; Forward Current Avg Rectified, IF(AV):60A; Forward Surge Current Max, Ifsm:500A; Forward Voltage Max, VF:0.7V; Junction Temperature, Tj max:175°C ;RoHS Compliant: Yes     Yes     5990
$0.146      
$0.15

Line Note:    
17
32C9134
VISHAY SEMICONDUCTOR
BPV10     Photo Diode; Leaded Process Compatible:Yes; Package/Case:T-1 3/4; Capacitance:11pF; Forward Current:50mA; Forward Voltage:1.3V ;RoHS Compliant: Yes     Yes     2653
$0.588      
$0.59

Line Note:    
18
83C0506
FAIRCHILD SEMICONDUCTOR
QSE973     Photo Diode; Leaded Process Compatible:Yes; Package/Case:TO-92; Capacitance:20pF; Mounting Type:Through Hole ;RoHS Compliant: Yes     Yes     657
$0.307   Promotional price    
$0.31

Line Note:    
19
32C9143
VISHAY SEMICONDUCTOR
BPV23FL     Photo Diode; Leaded Process Compatible:Yes; Capacitance:48pF; Forward Current:50mA; Forward Voltage:1.3V ;RoHS Compliant: Yes     Yes     3925
$0.454   Promotional price    
$0.45

Line Note:    
20
32C9152
VISHAY SEMICONDUCTOR
BPW46     Photo Diode; Leaded Process Compatible:Yes; Capacitance:70pF ;RoHS Compliant: Yes     Yes     3281
$0.450   Promotional price    
$0.45

Line Note:    
21
74K2313
EG & G VACTEC
VTP3310LAH     ; Peak Wavelength:925nm; Sensitivity:0.55A/W; Dark Current:35nA; Breakdown Voltage Max:140V; Operating Temperature Range:-40°C to +100°C; Peak Reflow Compatible (260 C):Yes ;RoHS Compliant: Yes     Yes     62
$0.831      
$1.66

Line Note:    
22
40K0095
AVAGO TECHNOLOGIES
HLMP-7019     LED Lamp; LED Color:Yellow; Luminous Intensity:0.4µcd; Viewing Angle:90°; Forward Current:20mA; Forward Voltage:2V; Color:Yellow; Leaded Process Compatible:Yes; Lens Style:Diffused; Lens Width:1.65″; Mounting Type:Surface Mount ;RoHS Compliant: Yes     Yes     477
$0.570      
$0.57

Line Note:    
23
06F6859
AVAGO TECHNOLOGIES
HLMP-7000     LED Lamp; LED Color:High Efficiency Red; Luminous Intensity:0.4µcd; Viewing Angle:90°; Forward Current:30mA; Forward Voltage:1.5V; Color:High Efficiency Red; Leaded Process Compatible:Yes; Lens Style:Diffused; Lens Width:1.65 ;RoHS Compliant: Yes     Yes     376
$0.570      
$0.57

Line Note:     Substitute Products Available RoHS Compliant
24
06F6862
AVAGO TECHNOLOGIES
HLMP-7040     LED Lamp; LED Color:High Efficiency Green; Luminous Intensity:0.4µcd; Viewing Angle:90°; Forward Current:30mA; Forward Voltage:2.1V; Color:High-Performance Green; Leaded Process Compatible:Yes; Lens Style:Diffused; Lens Width:1.65 ;RoHS Compliant: Yes     Yes     103
$0.570      
$0.57

Line Note:     Substitute Products Available RoHS Compliant
25
33C1328
VISHAY SEMICONDUCTOR
TLHR5200     LED Lamp; Bulb Size:T-1 3/4; LED Color:Red; Luminous Intensity:10µcd; Viewing Angle:14°; Forward Current:20mA; Forward Voltage:2V; Color:Red; Leaded Process Compatible:Yes; Lens Style:(H x D) 8.7 x 5.8 mm; Lens Width:5mm ;RoHS Compliant: Yes     Yes     1374
$0.093      
$0.09

Line Note:    
26
33C1442
VISHAY SEMICONDUCTOR
TLUR6401     LED Lamp; Bulb Size:T-1 3/4; LED Color:Red; Luminous Intensity:15µcd; Viewing Angle:30°; Forward Current:20mA; Forward Voltage:2V; Color:Red; Leaded Process Compatible:Yes; Lens Style:T-1 3/4; Mounting Type:Through Hole ;RoHS Compliant: Yes     Yes     3426
$0.096      
$0.10

Line Note:    
27
05M0493
OSRAM
LGQ971     ; Luminous Intensity:10mcd; Viewing Angle:160°; Forward Current:25mA; Forward Voltage:2.2V; Color:Green; Operating Temperature Range:-30°C to +85°C; Forward Current Max, If:25mA; Operating Temp. Max:85°C ;RoHS Compliant: Yes     Yes     322
$0.103      
$0.10

Line Note:     Substitute Products Available RoHS Compliant • Accessories Available RoHS Compliant
28
41P0243
VCC (VISUAL COMMUNICATIONS COMPANY)
VAOL-5GDE4     LED; Bulb Size:5mm; LED Color:Green; Luminous Intensity:380mcd; Viewing Angle:30°; Forward Current:30mA; Forward Voltage:2V; Lens Style:Dome; Wavelength:570nm ;RoHS Compliant: Yes     Yes     959
$0.107      
$0.11

Line Note:    
29
57P7132
VCC (VISUAL COMMUNICATIONS COMPANY)
VAOL-5GAE4     LED; Bulb Size:5mm; LED Color:Red; Luminous Intensity:250mcd; Viewing Angle:30°; Forward Current:30mA; Forward Voltage:1.8V; Lens Style:Dome; Wavelength:643nm ;RoHS Compliant: Yes Yes     1000
$0.107      
$0.11

Line Note:    
30
33C1403
VISHAY SEMICONDUCTOR
TLMY3102-GS08     LED Lamp; LED Color:Yellow; Luminous Intensity:20µcd; Viewing Angle:60°; Forward Current:30mA; Forward Voltage:2.4V; Color:Yellow; Leaded Process Compatible:Yes; Mounting Type:Surface Mount ;RoHS Compliant: Yes     Yes     7893
$0.094   Promotional price    
$0.09

While Supplies LastProduct will no longer be available from Newark when current inventory is depleted.  – Non-Cancelable/Non-Returnable
Line Note:    
31
57P7150
VCC (VISUAL COMMUNICATIONS COMPANY)
VAOL-5701DE4     LED; Bulb Size:5mm; LED Color:Green; Luminous Intensity:100mcd; Viewing Angle:100°; Forward Current:30mA; Forward Voltage:2V; Lens Style:Cylindrical Flat Top; Wavelength:570nm ;RoHS Compliant: Yes     Yes     990
$0.114      
$0.11

Line Note:    
32
33C1286
VISHAY SEMICONDUCTOR
TLHG5201     LED Lamp; Bulb Size:T-1 3/4; LED Color:Green; Luminous Intensity:40µcd; Viewing Angle:14°; Forward Current:20mA; Forward Voltage:2.4V; Color:Green; Leaded Process Compatible:Yes; Mounting Type:Through Hole ;RoHS Compliant: Yes     Yes     5757
$0.065   Promotional price    
$0.06

Line Note:    
33
33C1336
VISHAY SEMICONDUCTOR
TLHR6205     LED Lamp; Bulb Size:T-1 3/4; LED Color:High Efficiency Red; Luminous Intensity:40µcd; Viewing Angle:14°; Forward Current:20mA; Forward Voltage:2V; Color:High Efficiency Red; Leaded Process Compatible:Yes ;RoHS Compliant: Yes     Yes     3620
$0.062   Promotional price    
$0.06

Not Normally StockedProducts not normally stocked, that show available inventory, are in stock up to the quantity displayed. Additional quantities will ship with lead time displayed.  – Non-Cancelable/Non-Returnable
Line Note:    
34
09J9280
LUMEX
SSL-LX3044GD     LED Lamp; Bulb Size:T-1; LED Color:Green; Luminous Intensity:40µcd; Viewing Angle:60°; Forward Current:25mA; Forward Voltage:2.2V; Color:Green; Leaded Process Compatible:Yes; Lens Color:Green; Lens Style:T-1 ;RoHS Compliant: Yes     Yes     5053
$0.125      
$0.12

Line Note:     Accessories Available RoHS Compliant
35
87K7097
SPC TECHNOLOGY
MV5453     LED Lamp; Bulb Size:T-1 3/4; LED Color:Green; Luminous Intensity:20µcd; Viewing Angle:65°; Forward Current:20mA; Forward Voltage:2V; Color:Pure Green; Leaded Process Compatible:Yes; Lens Color:Clear Diffused; Lens Style:Round ;RoHS Compliant: Yes     Yes     2011
$0.126      
$0.13

Line Note:     Substitute Products Available RoHS Compliant
36
87K7055
SPC TECHNOLOGY
MC20421     LED Lamp; Bulb Size:T-1 3/4; LED Color:Yellow; Luminous Intensity:30µcd; Viewing Angle:60°; Forward Current:20mA; Forward Voltage:2V; Color:Yellow; Leaded Process Compatible:Yes; Lens Color:Yellow Diffused; Lens Style:Round ;RoHS Compliant: Yes     Yes     1009
$0.126      
$0.13

Line Note:     Substitute Products Available RoHS Compliant
37
09J9510
LUMEX
SSL-LX3044AD     LED Lamp; Bulb Size:3mm; LED Color:Amber; Luminous Intensity:15µcd; Viewing Angle:60°; Forward Current:30mA; Forward Voltage:2.1V; Color:Amber; Leaded Process Compatible:Yes; Lens Color:Amber; Lens Style:T-1 ;RoHS Compliant: Yes     Yes     11
$0.143      
$0.14

Line Note:     Accessories Available RoHS Compliant
38
33C1434
VISHAY SEMICONDUCTOR
TLUO2401     LED Lamp; Bulb Size:1.8mm; LED Color:Red Orange; Luminous Intensity:5µcd; Viewing Angle:20°; Forward Current:20mA; Forward Voltage:2V; Color:Orange Red; Leaded Process Compatible:Yes; Lens Style:1.8 mm; Mounting Type:Through Hole ;RoHS Compliant: Yes     Yes     535
$0.104   Promotional price    
$0.10

Not Normally StockedProducts not normally stocked, that show available inventory, are in stock up to the quantity displayed. Additional quantities will ship with lead time displayed.  – Non-Cancelable/Non-Returnable
Line Note:    
39
57P7126
VCC (VISUAL COMMUNICATIONS COMPANY)
VAOL-3LSBY4     LED; Bulb Size:3mm; LED Color:Blue; Luminous Intensity:1200mcd; Viewing Angle:60°; Forward Current:30mA; Forward Voltage:3.5V; Lens Style:Dome; Wavelength:470nm ;RoHS Compliant: Yes Yes     926
$0.248      
$0.25

Line Note:    
40
57P7133
VCC (VISUAL COMMUNICATIONS COMPANY)
VAOL-5GSBY4     LED; Bulb Size:5mm; LED Color:Blue; Luminous Intensity:7000mcd; Viewing Angle:30°; Forward Current:20mA; Forward Voltage:3.5V; Lens Style:Dome; Wavelength:470nm ;RoHS Compliant: Yes Yes     767
$0.248      
$0.25

Line Note:    
41
75K1448
LUMEX
SML-LX1206SOC-TR     LED Lamp; LED Color:Super Intensity Orange; Luminous Intensity:75µcd; Viewing Angle:140°; Forward Current:20mA; Forward Voltage:2.6V; Color:Super Intensity Orange; Leaded Process Compatible:Yes; Lens Color:Clear ;RoHS Compliant: Yes     Yes     2710
$0.251      
$0.25

Line Note:     Substitute Products Available RoHS Compliant
42
57P7115
VCC (VISUAL COMMUNICATIONS COMPANY)
VAOL-3GWY4     LED; Bulb Size:3mm; LED Color:White; Luminous Intensity:3500mcd; Viewing Angle:30°; Forward Current:30mA; Forward Voltage:3.5V; Lens Style:Dome ;RoHS Compliant: Yes     Yes     1000
$0.302      
$0.30

Line Note:    
43
50P9329
VCC (VISUAL COMMUNICATIONS COMPANY)
VAOL-5GWY4     LED; Bulb Size:5mm; LED Color:White; Luminous Intensity:7000mcd; Viewing Angle:30°; Forward Current:30mA; Forward Voltage:3.5V; Lens Style:Dome ;RoHS Compliant: Yes     Yes     900
$0.302      
$0.30

Line Note:    
44
09J9436
LUMEX
SML-LX0603SOW-TR.     LED Lamp; LED Color:Super Intensity Orange; Luminous Intensity:60µcd; Viewing Angle:140°; Forward Current:140mA; Forward Voltage:2V; Color:Super Intensity Orange; Leaded Process Compatible:No; Lens Color:White ;RoHS Compliant: No     No     598
$0.180   Promotional price    
$0.18

While Supplies LastProduct will no longer be available from Newark when current inventory is depleted.  – Non-Cancelable/Non-Returnable
Line Note:     Substitute Products Available RoHS Compliant
45
01N4705
LUMEX
SSL-LX5093VC     LED Lamp; Bulb Size:T-5; LED Color:Purple; Viewing Angle:20 ; Forward Current:100mA; Forward Voltage:4V; Operating Temperature Range:-40 C to +85 C; Power Dissipation, Pd:120mW ;RoHS Compliant: Yes     Yes     993
$1.01      
$1.01

Line Note:    
46
02P7149
CREE
LC503FPG1-15Q-A3-00001     LED Lamp; LED Color:Green; Luminous Intensity:34000mcd; Viewing Angle:15°; Forward Current:25mA; Forward Voltage:3.2V; Operating Temperature Range:-40°C to +95°C; Wavelength:527nm ;RoHS Compliant: Yes     Yes     486
$0.495      
$0.50

While Supplies LastProduct will no longer be available from Newark when current inventory is depleted.  – Non-Cancelable/Non-Returnable
Line Note:     Substitute Products Available RoHS Compliant
47
08R4599
VCC (VISUAL COMMUNICATIONS COMPANY)
VAOL-5EUV8T4     Ultraviolet (UV) LED; Bulb Size:5mm; Forward Current:30mA; Output Power, Pout:120mW; Luminous Intensity:100mcd; Viewing Angle:15°; Wavelength, Typ:385nm ;RoHS Compliant: Yes     Yes     984
$0.709      
$0.71

Line Note:     Substitute Products Available
48
10N9403
ON SEMICONDUCTOR
ESD5Z3.3T1G     Transient Voltage Suppression Diode; Reverse Stand-Off Voltage, VRWM:3.3V; Clamping Voltage Max, Vc:8.4V; Package/Case:2-SOD-523; Breakdown Voltage, Vbr:5V; Capacitance, Cd:105pF; Diode Type:Unidirectional TVS ;RoHS Compliant: Yes     Yes     0
Lead Time 52 days
$0.071      
$0.07

Line Note:    
49
18M1756
VISHAY SEMICONDUCTOR
BA682-GS18     Variable Capacitance Diode; Package/Case:MiniMELF; Forward Current:100mA; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes; Reverse Voltage, Vr:35V; Current Rating:100mA; Mounting Type:Surface Mount ;RoHS Compliant: Yes     YesX     9676
$0.038      
$0.04

89M5416
V-LED
9900-1201-13     LED Chip; LED Color:Red; Viewing Angle:130°; Forward Current:750mA; Forward Voltage:230V; Luminous Flux Typ:95lm; Operating Temperature Range:-40°C to +85°C; Wavelength:625nm         36
$4.36      
$4.36
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2009, June 29 at 6:44 am Comments (0)

How to Replicate the Diode Experiments

I know for fact that the passive component, the diode, produces a measurable DC voltage when left undisturbed inside metal shielding for a sufficient period of time. At the time of this writing, here is my recommendation –>

The circuit is very simple. Leave the gain resistor pins (pins 1 and 16) open to provide a gain of one. Do not connect anything to the guard pins because your INA116PA will not be on a PCB. Rather your INA116PA will be held in the air by the wires soldered to the pins. An air op-amp offers the lowest possible input bias current. The DC input bias current produced by my INA116PA was measured at 2.2 fA (2.2E-15 amps). Pins 3 and connect are the input pins that you will connect to the diode. Get a quantity of two “4 AAA battery holders” for the INA116PA voltage source. For my next electrometer, I will be using just two “3 AAA battery holders,” which will provide even less bias current. Less bias current is an over kill, but the only reason I’m switching to just three batteries per polarity is to minimize the size so that I can place even more diodes in my new setup. In your case, you’ll probably be testing just one diode, so it’s best to get 4 AAA batteries per polarity since I do not know if the INA116PA will work well enough on 4.5 volts. The INA116PA datahsheet claims that 4.5 volts is fine. I’ll be using new Alkaline batteries, which are over 1.5 volts each, so it will be over 4.5 volts. Also, the INA116PA will most likely work well below 4.5 volts per polarity. I get the AAA battery holders at Radio Shack. So, connect the negative voltage from your batteries to pin 8, and the positive voltage to pin 13. Connect pin 9 (Ref. pin) directly to ground. Pin 11 is the output, which you can connect to a common voltage meter. Here’s a diagram –>


The above electrometer input is left floating. I have tested the electrometer both ways, floating, and also with grounding resistors connected to a input wire. It works just perfectly fine on the diodes. You will only need to use the electrometer for a few minutes per testing period. If you’re testing multiple diodes, then it is recommended that you ground the input pins to ground in between each diode test.

The electrometer and batteries are inside a metal shield. I use a large metal shield made by Hammond. I have conducted various tests with the batteries inside and outside the Hammond shield. It makes no difference.

Twist the input wires and route then threw a small pin hole in the Hammond shield, which will go to the DMM (voltage meter). The DMM is outside the Hammond shield. The entire setup, including the DMM is then placed inside a second layer shield. You can use a large microwave oven.

To turn on the DMM and electrometer, you can use either mercury tilt switches or simple mechanical contact switches. I have used waxed dental floss string to go through a pin hole in the microwave oven to the meter that will turn the switch on/off by slightly pulling the string. My new setup will use 1 Lbs. fishing line string instead. Also, I will be making my own contact switches this time, which are rather easy to make simply by placing a short thick copper wire (~ 10 to 18 gauge) that privets up and down, one end tied to the fishing line that goes through pin holes of both shields that is connected to a small weight. The weight will be enough to pull the copper wire up to make contact to another copper wire. When the weight list slightly lifted up and placed on a small ledge, the copper wire goes down and creates an open-circuit. This creates a very nice simple copper switch that will produce absolutely no measurable effects on the measurements.

For the new setup, this time I will use the aforementioned simple contact switches instead of mercury tilt switches because the mercury tilt switches will be used for the electrometer input stage. There will be four mercury tilt switches. When the entire setup is slightly tilted *forward*, two of the mercury switches will be on. When the entire setup is slightly tilted *backwards*, two of the mercury switches will be on. While the setup is tilted forward, the electrometer will be connected to a diode in *forward polarity direction*. While the setup is tilted backwards, the electrometer will be connected to a diode in *reverse polarity direction*. IOW, this will allow me to reverse the diodes connection across the electrometers input. So if the measured DC voltage is say 350 mV while tilted forward, it should be -350 mV while titled backwards. Of course you have take into account the electrometers *output* voltage offset. Note that the electrometers output offset has nothing to do with a voltage offset on the electrometers input stage. So don’t forget to subtract the output offset. Or if you wish, you can add a second stage op-amp that does the offset for you, but such pretty stuff is completely unnecessary until the final stage when you demonstrate to a notable scientist.

The next step consists of the diode. Presently I would recommend the 1N4148WS diode made by MULTICOMP. This is a 1N4148 diode that has a solid casing, not glass. The problem with glass casings is that you have to work inside a dark room since the light will shine on the diodes junction, and thus disturb the diode. I would recommend soldering 50 of such 1N4148WS diodes in-series. Unfortunately this will highly disturb the diodes– TED effect. Place the disturbed diode array inside the Hammond shield and solder/connect it to the electrometer input. Close the lid on both shields, and let it sit. Since there is no guarantee how disturbed the diode array will be, I would recommend letting it sit undisturbed for at least one month. Just to be on the safe side, do not place the setup near a wi-fi setup, although I have done extensive testing by placing my entire diode testing setup directly near a new high power wi-fi which clearly showed no change in the measured DC voltage. It is recommended that the diode array temperature not rapidly fluctuate, as this can disturb the diode state– TED effect. After a month or two, turn on the electrometer, let it be for a few minutes to stabilize, then tilt the entire setup to connect the electrometer to the diode, look through the microwave oven metal mesh grid to see the DMM reading, quickly write down the DC voltage, tilt the setup the other direction to reverse the mercury tilt switches, write down the DC voltage. There’s no need to subtract the electrometers offset, as the DC voltage is equal (Vp – Vn) / 2, where Vp is the voltage measured when tilted forward, and Vn is the voltage measured when tilted backwards. Then tilt the entire setup to neutral position to disconnect the diode array to the electrometer, and quickly turn off the DMM and electrometer. Take a measurement about once every two days.


Please contact me for further details and on-going advice.

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2009, June 28 at 8:32 am Comments (0)

T. Boone Pickens on C2C AM

T. Boone Pickens will be on C2C AM 2009, June 28 –>

http://www.coasttocoastam.com/show/2009/06/28

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2009, June 27 at 9:03 am Comments (0)

Why external C effects output

It appears that external capacitance on the diode has an appreciable effect by slowly decreasing the produced DC voltage. The decay rate is rather slow, on the order of weeks to months. Initially that is difficult to explain, but here is one good explanation –>

I just ran a Spice simulation on the internal noise across a small microscopic segment within the diode to see how external capacitance effects the net noise on the diode. To my surprise, external capacitance has an extremely small effect. Consider an LED that has only 1 Gohm resistance at near zero bias, Rz. We will analyze the noise across a small slice of that diode that is 1 Kohm, which would be 1 Kohm / 1 Gohm = 1 millionth of the diode. In this example, the diodes capacitance is 0.3 pF. When a 1.0 uF external capacitor is placed across the diode, the change in noise across the 1 Kohm slice is only 0.9999995 times less noise.

The above simulation is analyzing the diode noise by taking a small *axial* slice of the diode. Next, I divided that small axial slice into small diode segments *width-wise*. This provides noise analysis on a small area of the diode. The change in noise across the individual segment was that much more less, which results in 0.9999999999998 times less noise.

Next, is the final step. The noise analysis across a small segment of diode has been sliced axially and width-wise. Next, the final step is to segment the diode height-wise, which results in 0.9999999999999999999 times less noise.

Such a small change in noise would definitely produce a slow self-starving effect. IOW, the addition of the 1.0uF capacitor decreases the noise on each small volume of semiconductor by 0.9999999999999999999 times. Due to the diode square law, the DC voltage output is relative to the noise. IOW, if the noise decreases by X percent, then the DC voltage produced by the diode decreases by X percent. The DC voltage then decreases by 0.9999999999999999999 times, which means there’s less reverse DC voltage across the junction, which decreases the depletion width at a linear rate, which means less Johnson noise.

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2009, June 27 at 7:11 am Comments (0)

Predicted Vdc for THz chip

I was just looking at the V-I graph of Charles M. Brown’s 1T7 THz diode chip that shows Rz at only 2 Mohms. The 1T7 chip consists of 10000 diodes in direct parallel connection. According to my calculation, the properly loaded 1T7 chip would produce only 2e+6 ohms * 10 pA = 20 uV (0.02 mV) DC. What is very interesting is that Tom Schum showed the 1T7 chip at producing 15 uV, which is very close to the predicted 20 uV.

Note this is not the predicted peak DC voltage that the diode can produce, but it is the predicted *loaded & stabilized* DC voltage. The loaded and stabilized DC voltage is taken from many observed measurements from various diodes. For example, the predicted DC voltage from my 40 in-series SMS7630 diode array is 5500 ohms * 10 pA * 40 = 2.2 uV DC. On countless measurements on this diode array the initial DC voltage was always a lot higher, anywhere from 5 uV to over 30 uV DC. Although, within ~ an hour of placing this diode array across a 47 uF low leakage capacitor bank over and over, the DC voltage slowly decreased until it stabilized at ~ 1.8 uV DC.

According the research, the 1T7 chip could produce over a milli volt so long as it’s not loaded down for too long.

I am not expected to much DC voltage from Charles M. Brown’s 1T7 diode array. If it’s significantly undisturbed, then I’m expecting to at least find a measurable DC voltage on the new electrometer, which now has a gain of one, thus making the lowest measurable DC voltage 0.1 mV. CMB’s chip will probably be a bit disturbed, but since it has low Rz, it will probably recover at a much faster rate than the LED’s.


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2009, June 26 at 8:16 am Comments (0)

LED setup update

Relatives arrived Sunday morning. There has not been much time to spend on the diode research since Saturday.

The new diode testing setup will consist of a lot of unique individual *new* diodes. When complete, I will periodically measure the DC voltage produced by each diode. Each diode will be measured individually.

A few days ago I purchased 1 lb. fishing line, which will be used instead of the waxed dental floss. The 1 lb. line is considerably thinner measured at 4.5 mils diameter.

I’m still shopping for the new diodes that will be tested in the new setup. One of the diodes will probably be a new laser diode, possibly an OPTEK OPV380, 1.5mW, 850nm. Although Charles M. Brown’s THz diode is not new, I will still test it.

The goal of the new setup is to find an exact testing setup, including diode part number, that a notable scientists could replicate with a high probability of success. This means I must repeat the entire process as the notable scientist would do. When complete, I will provide the notable scientist the exact part numbers of everything (diode, metal shields, electrometer, etc.) and where such parts were purchased. So, I will be purchasing a lot of new diodes from an online store such as Digikey.com.

It’s still unknown how long it takes for high Rz diodes to recover, which is why some of the new tested diodes will not be LEDs and photodiodes.

Here’s an outline of each step in achieving the goal –>

  1. First I need to build the new testing setup– in progress.
  2. Buy a wide range of diodes– in progress.
  3. Place the diodes inside the new testing setup.
  4. Let the diodes rest inside the new setup.
  5. Begin measuring the DC voltage produced by the diodes on a periodic basis.
  6. Find the best diodes that recovers that fastest while producing an appreciable DC voltage. I don’t know how many top diodes I’ll pick, but it could be ~~ 4 diodes.
  7. Once the top diodes are known, I will then buy ~ a dozen of each to find the probability of success for each diode.

The end goal is to find a specific new diode that has a high probability of succeeding; i.e., quickly recovering, and producing an appreciable DC voltage.

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2009, June 25 at 6:46 am Comments (0)

The Human Illness

I’m always amazed how a high percentage of humans are so blind to helping other species. I’m unbelievably grateful for those few people that give so much to helping the animal kingdom and our environment!!! Today I added another text widget to the right side of the website titled, “World Chimpanzee population.” In 2004 the entire world Chimpanzee population was estimated to be 150,000, total! It is believed to be considerably less now in 2009! The present human population that is over 6,800,000,000 and increasing at an alarming rate!

The post popular reality show in America is Jon & Kate Plus 8 for their family of eight children! It is saddening how people are rewarded for aiding to a destructive cause of severe over population.

The human species is destroying this planet, plowing down natural environments like a plague, forcing countless species further and further into smaller areas to the point that animals such as coyotes, wolves, and bears are forced to enter into cities looking for food, in which case they are immediately viewed as a threat and shot with shot guns.

Yet, it amazes me to no end how most people can out right lie to themselves by believing they are good people by sitting back doing *NOTHING* to help!

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2009, June 19 at 7:12 am Comments (0)

CMB’s THz chip

Last night CMB’s mail package box that contains the THz diode chip was placed inside the large metal shield while I make the new setup. This should help is recover a bit, but the time will come when it will need to be highly disturbed by soldering it to the new setup.

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2009, June 19 at 6:43 am Comments (0)

Electrometer analysis

I’m thrilled over yesterdays analysis on my electrometer,  which contains the INA116PA op-amp. I took accurate detailed measurements of the electrometers total input bias current, Ib. It produces only 2.2 fA (2.2E-15 amps). Measuring the bias current was a simple task.

According to the INA116PA datahsheet, the typical input bias current for this op-amp is 3 fA.

A far more difficult task was measuring the electrometer input resistance. The best measured I could get was ~~ 2E+15 ohms! The INA116PA datasheet used to provide the input resistance, which was 1E+15 ohms. For some reason they removed the input resistance spec from the datasheet. Maybe because it’s difficult to test or varies a bit.

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2009, June 19 at 6:21 am Comments (0)

IR Photodiode notes

I thought I’d include these notes. Before dismantling the IR Photodiode setup, I turned on the lab fluorescent lights, something I normally don’t do. The DC current produced by the IR Photodiode did not change. I then removed all of the covering around the entire setup. No change in DC current. I then opened the outer metal shield door. As expected, there was no change in DC current.

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2009, June 18 at 11:54 am Comments (0)

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