Tuesday, February 22, 2011

Tube/Valve receiver

For some time that I wanted to do a simple valve receiver (or tube depending on which side of the Atlantic you are). So now was the time!
After some testing I finally started to get some signal:

video

Will put the schematic online as soon as I have all issues fixed... like having an easily to duplicate "tuning" coil.
Main design is a "regen" found in the internet with 12v "HT" power supply.

it's really nice to see the glow on the valve.... most similar thing with transistors is when they explode or when resistors get overloaded...

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