Hello Everyone,
Just wondering about the idea of providing about 10mA DC current through the protection relay contact for wetting it.
Obviously, this is for Lin-type amps.
For about 5 Ohm - 6 Ohm DC resistance of speakers you would need about 50mV - 60mV DC offset at the output.
I do realize that in practice you would want an offset less than 10mV.
The older stereos I have with protection relays do suffer from intermittent working at low levels, cranking up the volume temporarily "fixes" the relay contact for about half an hour or so, then back to the intermittency.
Any comment on the above?
Thanks, Peter
Just wondering about the idea of providing about 10mA DC current through the protection relay contact for wetting it.
Obviously, this is for Lin-type amps.
For about 5 Ohm - 6 Ohm DC resistance of speakers you would need about 50mV - 60mV DC offset at the output.
I do realize that in practice you would want an offset less than 10mV.
The older stereos I have with protection relays do suffer from intermittent working at low levels, cranking up the volume temporarily "fixes" the relay contact for about half an hour or so, then back to the intermittency.
Any comment on the above?
Thanks, Peter
Last edited:
