Radiola 17 power supply

2/17/2009 9:55:43 PMjoeinri

Hi all,
I've got a Zenith model 11-E with same tube lineup as a Radiola 17. problem is, no power supply. I do have the Radiola 17 (junker) and am thinking about trying to use it. Is there a problem with powering up the Radiola supply with no load?? I'd like to check voltages before attempting to tie in the Zenith. Any help much appreciated.
Joe

2/18/2009 10:55:10 AMDoug Criner

With the rectifier installed, bringing it up unloaded will result in the voltages being quite a bit higher that normal, particularly the B+. This will put added strain on the filter caps. It may or may not cause harm, but it won't be good for it.

Best to bring it up with a Variac, and watch the B+, keeping it below spec.

If and when you hit it with full line voltage, make sure the line switch is in the 120-V position.
Doug

:Hi all,
:I've got a Zenith model 11-E with same tube lineup as a Radiola 17. problem is, no power supply. I do have the Radiola 17 (junker) and am thinking about trying to use it. Is there a problem with powering up the Radiola supply with no load?? I'd like to check voltages before attempting to tie in the Zenith. Any help much appreciated.
:Joe

2/18/2009 1:48:40 PMjoeinri

Thanks Doug! I'll try that...need to get myself a variac. I've been wanting one for awhile now anyways. I've just finished the re-wire of the Zenith 11-E(Every wire was dried up and brittle)...now I'll look at the Radiola 17 power supply.

:With the rectifier installed, bringing it up unloaded will result in the voltages being quite a bit higher that normal, particularly the B+. This will put added strain on the filter caps. It may or may not cause harm, but it won't be good for it.
:
:Best to bring it up with a Variac, and watch the B+, keeping it below spec.
:
:If and when you hit it with full line voltage, make sure the line switch is in the 120-V position.
:Doug
:
::Hi all,
::I've got a Zenith model 11-E with same tube lineup as a Radiola 17. problem is, no power supply. I do have the Radiola 17 (junker) and am thinking about trying to use it. Is there a problem with powering up the Radiola supply with no load?? I'd like to check voltages before attempting to tie in the Zenith. Any help much appreciated.
::Joe