Author Topic: Differential Amplifier  (Read 1076 times)

0 Members and 1 Guest are viewing this topic.

Offline Login to see usernames

  • Member
  • **
  • Posts: 222
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:

http://www.electronics-tutorials.ws/opamp/opamp_5.html

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:

http://www.goldmine-elec-products.com/prodinfo.asp?number=G17753

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:

http://www.robotmesh.com/grove-differential-amplifier?gclid=Cj0KEQjwx_WuBRDJ7tSK2-W0pJkBEiQAEWgR8NXyiWgwd5jv8D7n-B_bDJNZ-9XjFhrLEYQrqeitnHkaAlh08P8HAQ


Offline Login to see usernames

  • Global Moderator
  • Hero member
  • ****
  • Posts: 3634
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...