On Wed, 14 Jan 2026 11:30:29 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:
[...]
The capacitance I am suggesting is in series with the signal to stop any
DC from getting into the test amplifier. The capacitance quoted for
oscilloscopes and probes is the shunt capacitance from signal to earth.
You could use an oscillocope probe if you have one with a suitable plug,
but interpose a 10nf capacitor between the probe tip and the point in
the circuit you are measuring, so as to block any DC.
Oh dear. Here's the probe I made up today. Can you spot where I went
wrong? Sigh.....
https://disk.yandex.com/i/fzGLE2MZltBpQQ
Yes. ...Sigh.
...but easily put right.
--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
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