Hmm..."something simple, working for years..."
I've been doing that for years with a different topology/method that is
also something simple:
Power Amp: Two switches...switch on the filaments first, then after an
appropriate delay - actually the sequence below for the Preamp, switch on
the rectifier/HV.
Preamp: Two switches, two powerstats (variacs), one each in front of
filament and HV/rectifier trafos...
Filament switch ON, power up gradually with powerstat, then...
HV switch ON, count to 30 with fingers (:)), power up gradually with
powerstat
Works great, no PCBs, no other stuff (relays, time delay modules, etc.)!
Best, 73 etc.,
RC
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On Fri, 14 May 2021 08:10:14 -0700, "f1frv" <f1frv@...> wrote:
hello
Have a look for something simple, working for years...
[1]
73s
Dom
Links:
------
[1]
[2] /g/duncanampspsud/message/60
[3]
mailto:
[email protected]?subject=Re:%20Re%3A%20%5Bduncanampspsud%5D%20Soft%20Start%20Option
[4]
mailto:f1frv@...?subject=Private:%20Re:%20Re%3A%20%5Bduncanampspsud%5D%20Soft%20Start%20Option
[5] /mt/81400426/90558
[6] /g/duncanampspsud/post
[7] /g/duncanampspsud/editsub/90558
[8] mailto:[email protected]
[9]
/g/duncanampspsud/leave/8998765/90558/306449312/xyzzy
