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

[Bruce Long]

Hello:
I started collecting ARC-5 receivers a few years ago and I find I have accumulated  a nice heap.  I'd like to put them into operation but I need power supplies.  Rather than source parts from my junk box 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.


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.

I have also read of using less than 250 vdc to reduce the component voltage stress.  


Filament voltage was of course dc in the original applications,  ham conversion generally used ac but I have seen some comments about returning to dc filament operation.

So what do you guys think is the ideal power supply operating specifications?  250vdc at 80 mA for the plates or something lower----28vac at 400 mA for the filaments or is there any practical reason to use dc?  Current specs listed above are actual expected receiver power supply currents with no power supply safety margin


thank you in advance for your comments.

bruce   KJ3Z