[ARC5] Receiver current drain

[Mike Hanz]

On 1/5/2011 4:56 PM, Kenneth G. Gordon wrote:
> Both of the manuals I have for the SCR-274N and AN/ARC-5 receivers are
> missing what may be critical pages which may contain the information I need
> for the receivers.
>
> I need to know what is the normal current drain at 250 volts when the
> receivers are in operation.
>
> I know that the dynamotors are rated at 250 VDC at 60 mA, but what do the
> receivers NORMALLY draw when in operation.

Like everything in life, "it all depends", Ken.  A clue is provided in 
the 15mA cushion for external devices.  If the B+ is 240v, you are 
pushing the audio output of the receiver to a full 400mW audio output 
shown in the bench test procedures, and the BFO is on, the total current 
drain can approach 45mA.  I seem to recall 35-40mA in normal operation, 
but it all depends on the conditions.  I'm curious as to why you might 
need it so precisely?

73,
Mike