[ARC5] Receiver Power Supply

[D C _Mac_ Macdonald]

I believe some folks here on the ARC-5 list, recommend keeping the B+ voltage down around 175V or lower to ease stress on the old capacitors in the receivers.  Using a choke input filter setup with this transformer should probably get you into that "safe" territory at a minor cost in audio output power. 
 
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* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* k2gkk hotmail com * 
* Oklahoma City, OK * 
* USAF & FAA (Ret.) * 
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> From: carpenterpa at tds.net
> Date: Tue, 28 Apr 2015 13:43:44 -0400
> To: arc5 at mailman.qth.net
> Subject: [ARC5] Receiver Power Supply
> 
> Has anyone on the Forum built a power supply for the ARC-5 receivers using a Stancor PC-8417 power transformer?
> 
> This transformer has three secondaries:
> 
> 220-0-220v @ 50mA
> 25.5v @ 0.5A
> 6.3v @ 0.6A
> 
> I was thinking of using a 6X5 as the rectifier for the B+. I assume a full wave bridge would work for the 24v filaments to the Command Set receiver? What is the current draw for the receiver filaments at 24v? Is the 0.5A close enough?
> 
> If someone has seen a power supply circuit using the PC-8417 power transformer please send it my way (by direct reply with attachment) and/or fill me in on the details.
> 
> If the current ratings are OK, this would make an excellent PS for my receivers!
> 
> Thanks in advance to all you respond!
> Respectfully 
> Phillip W4RTX 
> 
> Sent from my iPhone