[Milsurplus] BC-611 power

[J Forster]

 From:         Bob Camp <ham at cq.nu>

 Hi

  I agree that a "simple" high voltage converter makes the most sense.
  One issue would be that there's a big difference in the design if it
  runs off of 1.2 volts than if it runs off of 12. The higher the input
  voltage the easier it's going to be to make the output voltage ....

  Bob


I chose 9 VDC as a compromise:

It is high enough that powering the drivers is easy because you can
either use CMOS or TTL with a regulator or a tap on the battery pack.

The drop in the output transistors will not be a big part of the supply
voltage.

You can use a Radio Shack or other common stock transformer:  24 V CT is
12 V per side. Running it a 9 V means the output will be 9/12 of 120 =
90 V..... just about what I wanted. The transformer losses will be
minimal because it's well below saturation, even with a cheap (<$10)
transformer.

9 V is easy to get with reasonable batteries, think Cs or Ds.

FWIW,
-John