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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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Thread Tools |
13th Sep 2016, 9:49 am
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#21 |
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Rest in Peace
Join Date: Jul 2011
Location: Bridgnorth, Shropshire, UK.
Posts: 787
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Re: Three-valve TRF
It is a relay base. I widened the holes to accept Mazda octal pins. The springs in the base didn't seem to mind!
Yes, fuses - the longer (30mm?) ones. And yes, there is a smaller reaction coil turning inside the larger one. I used 6mm aluminium tube with 4mm threaded stud up the middle for the control shaft. 'Capacitors' are redundant end caps from extruded cases. |
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13th Sep 2016, 9:54 am
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#22 |
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Rest in Peace
Join Date: Jul 2011
Location: Bridgnorth, Shropshire, UK.
Posts: 787
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Re: Three-valve TRF
Tuning capacitor purchased at NVCF for £1.
The knobs were from Farnell, IIRC. |
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13th Sep 2016, 12:46 pm
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#23 | |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
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Re: Three-valve TRF
Quote:
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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