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46-1213 Schematic Question
#11

Hi Larry,

Great idea on the fuse!  Place in the line at the power switch.  Best between the cord and switch.  While not highly important on a transformer powered radio, important, it is a good idea to use a polarized power cord.  the larger pin (Neutral) goes to the side of the transformer that is not the switched side.  The smaller pin (Line) goes to the switch.

One concern is that you WILL get a bit of a "tickle" from the two 0.01 uF Y2 caps that run from Line (hot) and Neutral to the chassis.  This puts the chassis at half the line voltage, but at relatively low current.  Since the old caps can leak or short, the current may be rather high.  This is why we recommend the Y2 safety caps.  Your desire to use a grounded cord is laudable, but as others have stated, there is a lot of noise on the grounding system in the average house.  For sets with a long wire antenna and ground, where the ground end of the antenna coil is connected to the chassis, this can be an issue.  However, your set has a loop antenna and an FM Dipole, therefore using a 3 wire plug might not cause noise.  Try it both ways.  "Tack" on the 3 wire cord (black or brown is hot, blue or white is neutral and green or green / yellow is ground.  Plug in directly, then use a 3 pin to 2 pin adaptor used to allow the use of a 2 prong outlet on a 3 prong cord. (This device is often referred to as a gozinta, as in "this gozinta that").  Tape the ground lug that is supposed to connect to the outlet plate screw.  This will allow you to determine which way works better for you.

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55


Messages In This Thread
46-1213 Schematic Question - by MissouriLarry - 05-21-2025, 12:48 PM
RE: 46-1213 Schematic Question - by GarySP - 05-21-2025, 01:36 PM
RE: 46-1213 Schematic Question - by RodB - 05-21-2025, 02:06 PM
RE: 46-1213 Schematic Question - by MissouriLarry - 05-21-2025, 02:14 PM
RE: 46-1213 Schematic Question - by MissouriLarry - 05-21-2025, 02:46 PM
RE: 46-1213 Schematic Question - by RodB - 05-21-2025, 07:39 PM
RE: 46-1213 Schematic Question - by MrFixr55 - 05-22-2025, 12:11 AM
RE: 46-1213 Schematic Question - by MissouriLarry - 05-22-2025, 07:04 AM
RE: 46-1213 Schematic Question - by radiorich - 05-22-2025, 08:03 AM
RE: 46-1213 Schematic Question - by RodB - 05-22-2025, 10:02 AM
RE: 46-1213 Schematic Question - by MrFixr55 - 8 hours ago



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