How to perform voltage summation in analog circuits?

jiveshgovil · Apr 9, 2006

Voltage Summation

I request information on how to perform voltage summation in analog circuits?

I do not wish to employ op-amps and resistors but capacitors are preferred.

I want to achieve Vout=V1+V2.

Any ieee paper or so shall be gratefully acknowledged.

Regards

rockycheng · Apr 9, 2006

Voltage Summation

If you want to add two contineous voltage waves, you can use opamp and resistor to convert them into currents first, then mirror both current signals to a sensing resistor, thus the voltage across the sensing resistor is the summed voltage. The drawback of this method is the large power consumption. If you only need to obtain the sum of two static voltage values (e.g. the sampled voltage in an ADC), you can use switched capacitor circuits.

regards

jiveshgovil · Apr 9, 2006

Re: Voltage Summation

rockycheng said:
If you want to add two contineous voltage waves, you can use opamp and resistor to convert them into currents first, then mirror both current signals to a sensing resistor, thus the voltage across the sensing resistor is the summed voltage. The drawback of this method is the large power consumption. If you only need to obtain the sum of two static voltage values (e.g. the sampled voltage in an ADC), you can use switched capacitor circuits.

regards

Please read the question carefully.

rockycheng · Apr 9, 2006

Voltage Summation

ok, you do not wish to...

Then you can use switched capacitor circuit

How to perform voltage summation in analog circuits?

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