What voltage levels are we talking about? And what precision/resolution do you need?Most DVMs are rated 40-400 Hz, Any suggestions beside an oscope how to measure this frequency?
There's low budget, and then there's LOW budget. Not sure which you're referring to.I have an oscope I won' to able to access for years (most likely) due to my stroke. I'm thinking in terms of a low budget hobbyist bench.
Hello,Most DVMs are rated 40-400 Hz, Any suggestions beside an oscope how to measure this frequency?
Hi,I think this will work well. You would use a compensated attenuator for voltages above 200 mv. It takes a lot of fun out of designing a voltmeter but it makes a very accurate True RMS measurement and has plenty of bandwidth.
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www.linear.com/product/LTC1968 There are similar parts on the market, but I don't know if they can handle 400 kHz satisfactorily.
As an alternative, I have a box containing 10,000 custom 0.5V 8.0 ma incandescent bulbs that can do the job nicely -the photodetector is available separately.
Hi,Analog Devices makes something very similar in an 8 pin DIP, the AD737 (Also what looks like an 8 pin SO). They were about $4 each in small quantity. The performance does not approach that of the Linear Technology offerings but it was just fine for audio device R&D.
by Duane Benson
by Duane Benson
by Jake Hertz
by Duane Benson