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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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20th Sep 2022, 7:30 pm | #1 |
Heptode
Join Date: Jul 2020
Location: Larkhall, South Lanarkshire, Scotland.
Posts: 671
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My HomeBrew Signal Tracer
Built this ages ago but just got round to boxing it up today, Based on a circuit i found on youtube, Uses a 741 op-amp as a high impedance buffer and the bread and butter LM-386 for the audio amp,
Has a massive amount of gain, Had to shoehorn it into a very small box so no internal speaker.. Cheers
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Help!! I've been electrocuted by a glass thing that glows |
20th Sep 2022, 8:48 pm | #2 | |
Octode
Join Date: Sep 2017
Location: Bristol, UK.
Posts: 1,642
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Re: My HomeBrew Signal Tracer
Quote:
Have you got the circuit? |
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20th Sep 2022, 8:52 pm | #3 | ||
Heptode
Join Date: Jul 2020
Location: Larkhall, South Lanarkshire, Scotland.
Posts: 671
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Re: My HomeBrew Signal Tracer
Quote:
Not sure if youtube link's are allowed on here
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Help!! I've been electrocuted by a glass thing that glows |
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20th Sep 2022, 9:10 pm | #4 |
Moderator
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,787
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Re: My HomeBrew Signal Tracer
They are allowed, yes.
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20th Sep 2022, 9:11 pm | #5 |
Heptode
Join Date: Jul 2020
Location: Larkhall, South Lanarkshire, Scotland.
Posts: 671
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Re: My HomeBrew Signal Tracer
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Help!! I've been electrocuted by a glass thing that glows |
25th Sep 2022, 5:02 pm | #6 |
Heptode
Join Date: Jul 2020
Location: Larkhall, South Lanarkshire, Scotland.
Posts: 671
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Re: My HomeBrew Signal Tracer
Added an audio / RF Switch, When connected to my 40M EFHW it picks up talk sport as loud and as clear as a superhet radio, With a tuned front end added it would make one hell of a TRF Set..
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Help!! I've been electrocuted by a glass thing that glows |
25th Sep 2022, 10:09 pm | #7 |
Dekatron
Join Date: Sep 2006
Location: Kilmarnock, Ayrshire, UK.
Posts: 5,420
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Re: My HomeBrew Signal Tracer
Crystal set with an audio amp, fun indeed.
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Cheers, Trevor. MM0KJJ. RSGB, GQRP, WACRAL, K&LARC. Member |