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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

operational amplifier

  1. H

    AMC1350: Loading at the input of AMC1350

    Dear Team, I am using AMC1350 in one of my application. Please see the below circuit. You can see that the voltage at the input of AMC1350 is 2.294V The expected voltage at the input of AMC1350 is 2.3766V I believe the loss of voltage at the input of AMC1350 is due to it's input impedance of...
  2. H

    Back calculating the input from output signal chain with an isolated amplifier and opamp

    We are measuring the voltage of a charger using the below circuit with the help of an ADC present in a microcontroller. The value of charger voltage is required for some other applications. The value of charger voltage is used to calculate isolation resistance. I tried to calculate the input...
  3. D

    Help calculating output voltage in operational amplifier using two reverse biased zener diodes

    Hi! I'm a 2nd year student of EE and need help in solving this assingment. Operational amplifier uses two reverse biased Zener diodes, calculate output voltage (in the picture 'Uiz')
  4. Alex_bam

    Design review: Fully differential telescopic Operational amplifier.

    Hello, I used Behzad Razavi's book to design a fully differential telescopic op-amp [screenshot attached]. Then I follow the same steps to design my proposed opamp, but I am not getting the desired result. Can someone point out where I'm doing mistakes? For your reference, I have attached hand...
  5. Alex_bam

    Designing demodulator for diffenentially modulated signal.

    Hello, I am demodulating differential signal using LPF based demodulator. The schematic of the entire system is attached which includes diff modulator, coupling capacitors, and demodulator. A modulated signal of 17 Mhz is demodulated. For the demodulator, I designed a 2-stage differential...

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