[ARC5] Collins xfmr ratings

[Kenneth G. Gordon]

On 14 Aug 2014 at 9:02, KG4KGL wrote:

> I hope someone here can help with Collins equipment. I have power transformer
> model # 672-0286-009

Someone on the Collins reflector could help you with that. I can't.
 
> It is rated at 1100/700 CT but I can not find anything about its current rating.

You can usually get a pretty fair idea of the power capability of any 
transformer from the size of the core and the weight. I've gotten so that I can 
look at a power tranformer and guess the wattage capability pretty closely. 
There are even forumlae out there on weight vs power capability, and size of 
core vs power capability.

> I want to build a regulated pwr supply to power among other things a BC-459. 

REGULATED might be possible with such an overly high voltage 
transformer. But you would need at least two large pass-tubes to handle the 
current. Such a power supply would be unnecessarily complex to use only 
with an ARC-5 transmitter, although it would be a good laboratory 
instrument, useful for other things.

Any good handbook would have good circuits for building such a supply.

Ken W7EKB