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Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
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10th Aug 2020, 4:30 pm | #1 |
Hexode
Join Date: Aug 2010
Location: nr. Hannover, Germany
Posts: 372
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Signal tracer
Inspired by Neil (newlite4's) recent post regarding his design for a signal tracer, I decided it was time to do a bit of home construction. I particularly liked Neil's design because it was without frills and more to the point I had all the parts needed.
I modified the circuit somewhat and have redrawn Neil's original circuit, hopefully not having made any errors in the values of the individual components as the original drawing was a bit fuzzy. The two resistors in the heater circuits are to bring the voltages down to 6.5V. The original transformer was meant for 220V, so the outputs are a tad on the high side. I have enclosed a few pictures of my creation which works a treat. There is a very small amount of mains hum with no signal which may be due to sub-optimal wire routing, I will look at that although it isn't very noticeable. Also I'm not entirely happy with the front panel labelling, I might have to resort to Letraset. All in all a very enjoyable project. Thank you Neil.
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Eddie BVWS Member. Friend of the BVWTM Last edited by eddie_ce; 10th Aug 2020 at 4:36 pm. Reason: additional information |
11th Aug 2020, 12:13 am | #2 |
Banned
Join Date: Jun 2015
Location: Mareeba, North Queensland, Australia
Posts: 2,704
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Re: Signal tracer
Beautifully made !!! and its a REAL one. Not an LM380 with a diode glued to it.
superb work Joe |
11th Aug 2020, 3:51 pm | #3 |
Octode
Join Date: Nov 2003
Location: Bath, Somerset, UK.
Posts: 1,805
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Re: Signal tracer
Nice one Eddie, really like the tag board wiring and especially like the use of a UY85 rectifier (I think I had just about run out of space on my chassis for a tube rectifier). We will have to start a tube signal tracer challenge contest .
Neil
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preserving the recent past, for the distant future. |
11th Aug 2020, 4:34 pm | #4 |
Heptode
Join Date: Jan 2016
Location: Wolverhampton, West Midlands, UK.
Posts: 777
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Re: Signal tracer
That's a lovely looking build, great skill shown IMO.
Cheers from Bill. |