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Re: Differential voltage probes 2
Original poster: "Wall Richard Wayne by way of Terry Fritz <teslalist@qwest.net>" <rwall@ix.netcom.com>
Finn,
> I talked to my brother about the project, he imediately said: Use
> instrumentation amplifiers. Analog devices has them for less than 5$
> with below 1Mhz bandwidth.
I believe Terry is interested in a very wide bandwidth. If we go with
scheme Fig. # 41 and put two TSH4012 on the inputs then both a fully
instrumentation and high bandwidth amplifier can be obtained.
http://hot-streamer.com/temp/DiffProbe11.gif
It's another chip and several more resistors though.
I suspect it will be tried both ways.
RWW