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M WARD farm radio 54kp-1209b
Mondial
Phorum Expert
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Posts: 1,114
Threads: 14
Joined: Feb 2013
City: Irvington, NY
#2

02-25-2016, 11:27 AM
If you are using the power supply design shown in the Phils Radios link without an isolation transformer, you have created a very dangerous condition. 

The ac line is directly connected to the radio chassis, so connecting the radio to an external ground is a problem. You have created a hot chassis set. Do not connect anything external to the radio without an AC isolation transformer!


Read the caution in the power supply instructions regarding the use of an isolation transformer. Its the only safe way to use this power supply with external antenna and ground connections.
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Messages In This Thread
M WARD farm radio 54kp-1209b - by David - 02-25-2016, 10:45 AM
RE: M WARD farm radio 54kp-1209b - by Mondial - 02-25-2016, 11:27 AM
RE: M WARD farm radio 54kp-1209b - by David - 02-25-2016, 03:11 PM
RE: M WARD farm radio 54kp-1209b - by David - 04-01-2016, 01:09 PM
RE: M WARD farm radio 54kp-1209b - by Mondial - 04-01-2016, 01:19 PM
RE: M WARD farm radio 54kp-1209b - by TV MAN - 04-01-2016, 11:44 PM
RE: M WARD farm radio 54kp-1209b - by fifties - 04-03-2016, 04:32 AM



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  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Other Radios (Non-Philco)