[ARC5] Simple Question Arc-5 receiver power supply requirements?

[WA5CAB at cs.com]

The output rating of all of the A.R.C. WW-II vintage single-band Command 
Set receiver dynamotors (i.e., RAT, RAT-1, ARA, SCR-274-N, AN/ARC-5 and 
AN/ARC-5X plus AN/ARR-2 and AN/ARR-2X) is 250 VDC @ 60 mA, not 80.  According to 
some pubs, 10 mA of that was earmarked for auxiliary equipment like the LM 
and ZB or AN/ARR-1.

In a message dated 12/04/2012 16:55:59 PM Central Standard Time, 
kgordon2006 at frontier.com writes: 
> On 4 Dec 2012 at 14:19, Bruce Long wrote:
> 
> >and ebay and build multiple different power supplies, I decided to do
> >a clean design from the ground up using ordinary Mouser- Digikey type
> >parts which will allow me to make several identical supplies. 
> 
> Good ideer...
> 
> >I thought the simple part would be to look up the voltage-current
> >requirements but my efforts turned up a wide range of values.    The
> >median seems to be 250vdc-80 mA and 28vdc - 400 mA obviously for
> >receivers still wired for 28vdc filaments.
> 
> IMHO, that 80 mA is the capability of the dynamotor, not necessarily the 
> requirement of the 
> receiver. The current drain for the B+ is dependent on too many things, 
> but mainly audio 
> power output. I recently checked several receivers here which I am working 
> on. The 
> maximum B+ current drain at 250 VDC was 50 mA when both audio and RF 
> gainis were set 
> ot maximum. If you shoot for 80 mA, you will have ample reserve.
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480