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The Pine Board Project (Metal Chassis Version)

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The Radio Shop:
In this thread we will be documenting "The Pine Board Project".
Ours will be in a metal chassis.

See link below to Bob Heil's website on this for more videos and documentation.
https://heilhamradio.com/amateur-radio-post/the-pine-board-project/

All credit for this goes to Bob Heil and his team on building this project.

The Radio Shop:



Amplified Parts
Transmitter kit
https://www.amplifiedparts.com/products/pine-board-am-transmitter-kit-ham-nation-bob-heil

Power supply kit
https://www.amplifiedparts.com/products/power-supply-kit-ham-nation-bob-heil

Mic Preamp kit
https://www.amplifiedparts.com/products/mic-preamp-kit-ham-nation-bob-heil


pine board Project on ARRL:
http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/January2018/Heil.pdf

The Radio Shop:
Started the power supply.

First thing I did was build the tube rectified circuit on the breadboard. We ended up with about 190 volts on the B+.
Now we know the transformer is 250 volts but this is what happens when you use tube rectification.

EDIT TO ADD PICTURES


I then built up a solid state  circuit.  But this time we get 390 volts on the B+ and a tap for the preamp at 190 volts.
Remember this is unloaded. No load on the supply.

EDIT TO ADD PICTURES

The Radio Shop:
Power supply has started. I decided to go with solid state. This is because the extra voltage is needed for more power out of the transmitter.

Toolmanchris:
Nice work as usual. Shame about the scratch though, been there and done that many times  :)

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