[AMPS] Single supply -Multi-amo help

[Rich Measures]

>Rich Measures wrote:
>> 
>> >Rich Measures wrote:
>> >>
>> >> >Can someone provide me with more info on using a single Power supply
>> >> >with several amps?? I am using 4cx250's on 2 and 432 and would consider
>> >> >building the same type of amps for 6 and 222.
>> >>
>> >> Are these amplifiers going to be in simultaneous use?
>> >> Rich...
>> >>
>> >> R. L. Measures, 805-386-3734, AG6K
>> >No they would be run one at a time ...
>> 
>> Then one supply would do.
>> 
>> >I see a ckt in QST where they
>> >just remove the screen voltage to  the unused amps...
>> 
>> .  When the normal cutoff bias is applied to the grid, the tubes draw no
>> current.  The presence or absence of screen voltage matters not.
>> cheers,  Jordan
>> Rich...
.......
>Hi Rich ... so if I relay switched the bias line to decrease bias for
>Class c or AB1 to the active amp and left the other amps beyond cutoff I
>should be ok??? 73 de Jordan VE2SWL/VE6...
Indeed.  All the amplifiers are already in cutoff during receive.  If the 
amplifier in use is the only one that is keyed on transmit, this means 
that it will be the only amplifier to draw anode current..  Leaving the 
anode supply connected to all amps is simply no prob.  
cheers, Jordan.
Rich...


R. L. Measures, 805-386-3734, AG6K   


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