Author Topic: Differential Amplifier  (Read 1098 times)

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Differential Amplifier
« on: August 26, 2015, 20:04:37 pm »
Here's a good starting article about using op amps to make a differential amplifier:

This type of circuit is used by musicians in the form of an audio mixer. When used to compare voltages, hv's will have to be reduced by a pair of precision voltage divider resistors.  These are a couple of bucks each:

I'll do some checking and see if I can find a specific circuit.  But it's also possible to buy a basic, upgradable differential amplifier for $15:

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Re: Differential Amplifier
« Reply #1 on: August 27, 2015, 02:17:11 am »
I Will have a good look at it man thanks a lot! hope i can find this pieces... seems better to use as voltage dividers

normaly to buy things from abroad here it take too much time...