4-20 mA Current Transmitter Rev 1.2
2 layer board of 2.37 x 1.09 inches (60.1 x 27.7 mm)
Uploaded:
November 7th 2020
Shared:
November 7th 2020
Total Price:
$12.85
4-20 mA Transmitter with input polarity and surge protection. Max 25 volts. External 2N4922G NPN transistor. Revision 1.2
<https://www.barbouri.com/2020/11/06/4-20ma-current-transmitter/> 
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4-20 mA Transmitter with input polarity and surge protection. Max 25 volts. External 2N4922G NPN transistor. Revision 1.2
<https://www.barbouri.com/2020/11/06/4-20ma-current-transmitter/> 
2 layer board of 3.35 x 1.76 inches (85.1 x 44.6 mm)
Uploaded:
February 19th 2018
Shared:
August 13th 2020
Total Price:
$29.45
GPS Disciplined Oscillator V1.2 for 10 MHz OCXO 134-10 and GPS-S1315Fv1.3 board. 0 to 8.19 V trim output in 125 uV steps. AD8628 power bus change.
GPS Disciplined Oscillator V1.2 for 10 MHz OCXO 134-10 and GPS-S1315Fv1.3 board. 0 to 8.19 V trim output in 125 uV steps. AD8628 power bus change.
Wien Bridge Oscillator Rev. 1.2 HPV
2 layer board of 1.15 x 1.16 inches (29.2 x 29.5 mm)
Uploaded:
August 31st 2019
Shared:
June 20th 2020
Total Price:
$6.65
Low distortion Wien Bridge Oscillator - High Performance Version. Selected values for 400 Hz frequency output at 26 volts peak to peak. C1, C2 are precision film capacitors for low drift and distortion. IC1 is an OPA1612 ultra-low noise and distortion audio op-amp. VR4 is an external 10K potentio…
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Low distortion Wien Bridge Oscillator - High Performance Version. Selected values for 400 Hz frequency output at 26 volts peak to peak. C1, C2 are precision film capacitors for low drift and distortion. IC1 is an OPA1612 ultra-low noise and distortion audio op-amp. VR4 is an external 10K potentio…
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HP3456A-C5 Adapter Rev 1.1
2 layer board of 1.22 x 1.22 inches (31.1 x 31.1 mm)
Uploaded:
June 20th 2020
Shared:
June 20th 2020
Total Price:
$7.45
Hewlett Packard 3456A Digital Voltmeter C5 Capacitor Adapter for A10 Board. Replaces the 4,000 uF @ 15 volts capacitor with 4,800 uF @ 25 volts, using 4 1,200 uF capacitors. Impedance 4.25 mOhms. Replaced obsolete Sprague 5 pin unit. Revision 1.1 <https://www.barbouri.com/2020/06/24/hewlett-pack…
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Hewlett Packard 3456A Digital Voltmeter C5 Capacitor Adapter for A10 Board. Replaces the 4,000 uF @ 15 volts capacitor with 4,800 uF @ 25 volts, using 4 1,200 uF capacitors. Impedance 4.25 mOhms. Replaced obsolete Sprague 5 pin unit. Revision 1.1 <https://www.barbouri.com/2020/06/24/hewlett-pack…
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Dual Regulator Ver. 1.0
2 layer board of 1.00 x 0.99 inches (25.4 x 25.1 mm)
Uploaded:
September 16th 2019
Shared:
November 4th 2019
Total Price:
$4.90
Dual Bi-Polar Voltage Regulator +/- 15 volts at 150 mA. Maximum +/- 20 volt Input Maximum LT3032 Connect SHDN: to IPS to turn on, and GND to turn off
<https://www.barbouri.com/2019/11/03/ultra-low-thd-sine-wave-generator/> 
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Dual Bi-Polar Voltage Regulator +/- 15 volts at 150 mA. Maximum +/- 20 volt Input Maximum LT3032 Connect SHDN: to IPS to turn on, and GND to turn off
<https://www.barbouri.com/2019/11/03/ultra-low-thd-sine-wave-generator/> 