[sdiy] protecting line level inputs

[Theo]

Diodes from signal to the power rails (both + and - supply).
This limits the signal voltage to rails+diode drop.
Usually rails + 0,6V is save, therefore run of the mill 1N4148 are ok.
And for critical stuff Schottky offers a rails + 0.25V way out.

HTH
Theo


----- Original Message -----
From: <modraj at msoe.edu>
To: <synthdiy at sdiy.org>
Sent: Wednesday, October 20, 2004 3:33 PM
Subject: [sdiy] protecting line level inputs


> SynthDIY:
> I have determined through experiment that my mixer does not like +/- 15
> volt spikes (because now it's broken).
> What's the best way to send signals from prototype circuits (like a random
> spike generator) to a line level input (zener diodes, pre-amplifier)? What
> is the maximum +/- voltage that these can handle?
> - Justin