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|previous: Geoff GRoss In all the production channel switc... -- 1107905628||View Thread|
|2/9/2005 6:36 PM|
|Enzo||Re: Switching channels before 1st preamp stage|
I like Bob's angle. Y the input into two first stages and do the switching after them - select which you want.
Relay voltage ratings are important, bit it is not the voltage to ground we care about, it is the voltage across the contacts. So if we are switching a parallel plate resistor, we only need rating for the voltage across the resistor, not the entire B+ voltage.
|Olaf I did exactly that with my last DIY... -- 2/10/2005 6:26 AM|