Power Amplifier Design

DJ's picture


Joined: Jun 07, 2020

Replies: 0
Power Amplifier Design
June 7, 2020 - 4:04pm

My digital oscilloscope has a built-in signal generator which produces an output of between +2V and -2V.

As part of a physics experiment I want to faithfully amplify this centre-crossing signal, with a bandwidth of at least 20KHz, to generate a current of up to 5mA through a block of soil of resistance 10KOhms. Thus I need to amplify my +/-2V signal to +/-50V - a factor of x25.

Power is supplied by a 12V Pb-acid gel battery.

What is the simplest reliable amplifier design which can achieve this?


Sourav Gupta's picture


Joined: Feb 12, 2018

Replies: 696

What is the output spec of the scope? Open drain or open collector or push-pull? how much current it can provide through the signal?