When is it a bad idea to use ceramic capacitors?

[old_coot88]

Originally Posted by tubesrule

...You can take a typical Class 2 or 3 ceramic capacitor connected to a scope and by just tapping it, observe the voltage it generates.

You can also hear the capacitor 'click' from a voltage spike applied across it (as in the breakdown test on an old style cap tester).

[tubesrule]

Originally Posted by old_coot88

You can also hear the capacitor 'click' from a voltage spike applied across it (as in the breakdown test on an old style cap tester).

True, that's why there are ceramic phonograph cartridges and ceramic speakers. They can be used both ways. Not such a great thing in a capacitor though

Darryl