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In response to: ICL7135 A to D converter with BCD Output

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circuits.dapj.com
https://circuits.dapj.com/auto-ranging-4-1-2-digit-digital-voltmeter Auto Ranging for ICL7107 had to be done with window comparators. In ICL7135 Digital Outputs are available for autoranging. Here in this circuit is a close approximation of what i may have designed once. Auto ranging 4-1/2 Digit Digital Voltmeter The…
07/07/21 @ 06:39 am

In response to: OP07 - The Instrumentation Opamp

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circuits.dapj.com
https://circuits.dapj.com/dual-polarity-analog-output-op-amps When you have to buffer and invert the polarity of mV input levels. This is the circuit you can use, as OP07 has uV offset. R9 and R10 can be 100K 1% MFR or better. Use a symmetrical dual supply. OP07: Ultralow Offset Voltage Operational Amplifier Both…
06/27/21 @ 02:53 pm

In response to: BC557 PNP Transistor General Purpose

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circuits.dapj.com
https://circuits.dapj.com/precision-op-amp-current-source In this circuit we tackle the error indicated in the earlier Current Source. The LM336-2.5V eliminates the tiny error of the regulated supply and resistors. Thereby increasing Precision to a higher degree. The opamp mirrors the stable 2.5V across P3 +…
06/26/21 @ 04:54 am

In response to: LM336-2.5 - Voltage Reference Diode

Webmention from: circuits.dapj.com Visitor

circuits.dapj.com
https://circuits.dapj.com/precision-op-amp-current-source In this circuit we tackle the error indicated in the earlier Current Source. The LM336-2.5V eliminates the tiny error of the regulated supply and resistors. Thereby increasing Precision to a higher degree. The opamp mirrors the stable 2.5V across P3 +…
06/26/21 @ 04:54 am

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