Perhaps an owner of a classic Henry 3KA can help with determining the pin outs
for the four (4) primary 220AC input terminals on the plate transformer? My
transformer has four vertically positioned inputs marked 1-4 with 1 at the top
position. Top position 1 is wired along with two individual wires to position
3 and 4. I assume that is the CW (#3) and SSB (#4) terminals. Position 2 is
not wired and the schematic does not acknowledge even the existence of that
terminal. Does anyone know for certain if wires 3 and 4 were repositioned to
terminals 2 and 3, would I get a somewhat lower secondary output voltages?
For clarification, I have removed all the parts related to the choke input
aspect of the power supply and replaced those components with a self contained
full wave diode,filter,and bleeder PC board measuring only 6x9" and capable
of handling 5400vdc @2 amps. Currently in the SSB position, the secondary
voltage output will certainly be too high for my 887
7 retrofit tube needs. In the CW mode, the AC voltage output is 3KV and
fine for 4200VDC rectified. Regrettably, I would have to block out the SSB
position. However, I would prefer to move the voltages down "a notch" but not
certain if that could be accomplished by using pin 2 and 3 thereby keeping the
very convenient two tier plate voltage. If anyone is familiar with the Henry
transformer, perhaps they could share that information with me? It would save
me muddling through some intimidating exploratory rewiring changes with the
Variac that I would be uncomfortable undertaking for fear of damage. Any
assistance would be appreciated. Thanks, Ron W2CQM/3
____________________________________________________________
Do THIS before eating carbs (every time)
1 EASY tip to increase fat-burning, lower blood sugar & decrease fat storage
http://thirdpartyoffers.juno.com/TGL3141/529be17749bbb61770db8st01vuc
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|