Mr Carlson's Lab
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A Talk About "GROUNDS," DC, AC, Chassis Ground, And How To Reduce Hum!
🕑 Added 2023-06-02 05:12:12 +0000 UTCLowering hum in solid state and vacuum tube (valve) circuits is easy when you know the steps involved. Here is an in depth talk about the process with examples. Learn about the difference between DC, AC, and chassis ground. See (and hear) how you can make your designs better by following a few easy steps. Enjoy!
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Comments
Scott Woodworth
Thank you Paul! I’ve been an electronics technician for years and I still learned a lot.
Jonathan Zang
I noticed a lot of capacitors, even electrolytics, had wire sleeving over the leads, others did not. How do I know which leads need sleeving and which don't? Do AA5 radios need sleeving in areas as well? Thanks in advance to any answers
Mark Smith
Re: Rectifying Heaters:What I have seen in the past is 6VAC or 12VAC on the heaters. So are we trying to rectify the heaters on all of the tubes to run on DC? I have never seen this, only a separate winding for the main transformer that runs all of the heater fillaments.
Sam Reames
Wouldn't the hum be reduced in the signal tracer by adding a grounded cord set instead of the 2 wire one? I also noted the use of copper braid ground leads near the RF amplifier tube.
