Subscribe to this blog's feed
Check out another newly-uploaded Design Idea designed to give circuit building inspiration.It involves a sample-and-hold amplifier that tracks and holds the difference of two input signals.
The Design Idea begins:
You can fulfil a requirement for sampling the difference of two signals in two classic ways. You can subtract the two input signals with an instrumentation amplifier whose output connects to an input of a classic sample-and-hold amplifier.
Despite the positive feature of needing no external resistors for a gain-of-one differencing instrumentation amplifier, this approach suffers from high relative output distortion when the inputs are of the same polarity and close in magnitude.Read the full Circuit Design Idea
It is courtesy of Marián Štofka, Slovak University of Technology, Bratislava, Slovakia (Edited by Martin Rowe and Fran Granville, EDN)
View all the Design Ideas on Electronics Weekly
Recent Comments