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Is a passive analog "summer" fine, if the output voltage is guaranteed to be lower than the input voltage?
Suppose that the voltage sources only goes to the analog summer described after. The voltage sources have enough negative DC bias to put voltages to be negative. Since negative plus negative is ...
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Why active analog summer (adder) over passive summer exactly?
Background: Designing voltage summer without op-amp and Operational Amplifier Adder
I know that op-amp can provide virtual ground for the circuit, and can have benefits in eliminating crosstalk. But ...
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