• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

B+ discharge times!

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
Tom Bavis

Tom Bavis

Member
Joined 2002
audiophool.com
JMB1 said:
Here's the problem: the second pole in the switch has to be able to handle a voltage of 360VDC. I haven't been able to find any affordable mechanical switches or relays that can handle that spec. Does anyone know a good way to switch that kind of DC voltage, in a way that can be tied in to the mains switch as DPDT?
Click to expand...

Closing a switch with 360V is not a difficult problem. OPENING a switch with 360VDC is a SERIOUS problem. And that won't happen. If B+ is delayed, sequencing (a little overlap between the poles) won't be a problem.

I've used LEDs in a bleeder string (high efficiency types for less current), but check with a voltmeter before reaching into a high-voltage area,
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom