Re: S-38C Question
|
If the neutral side of the line is directly connected to the chassis and the hot side is now connected to the ON/OFF switch, what is to be done if the AC hum or other noise picked up from the AC line is now worse?? The idea behind the original wiring was to keep the high side of the AC line away from the high impedance and gain of the audio amplifier circuit since the ON/OFF switch is located on the volume control. I do not believe that the NEC controls how a manufacturer connects to the AC line, that is the responsibility of the Underwriters Laboratory.? At the time the AA5s were made, they received the U/L sticker.? If one is concerned about a shock hazard form an AA5 radio, one can always connect it to a GFCI outlet.? It will trip when the current imbalance between the hot and neutral is greater then 15 mA. My workshop is in the basement.? All of the outlets in the basement are GFCI protected because of the concrete floor. HNY,? Jim Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy
On Monday, December 30, 2024 at 08:41:00 AM CST, Michael McCarthy, W1NR via groups.io <lists@...> wrote:
I should have added that changing to a polarized plug requires re-wiring the on/off switch. Not needed if the chassis passes the "hot" test. See On 12/30/2024 9:17 AM, Michael McCarthy, W1NR via groups.io wrote: Value is not critical, but voltage rating needs attention. I would use a --
73 de Mike, W1NR THAT was the equation. EXISTENCE!... SURVIVAL... must cancel out... programming! - Ruk - |
Jim Whartenby