Tag Archive for 'PCB'

Line of Tetrode amplifier boards by F1FRV

Published on February 18, 2012 in Electronics, Projects and RF Amplifiers. 0 Comments Tags: , , , , .

Here is a line of homebrew circuit board that I have made for a amplifier project I am working on. (Which by the way takes forever to comlete :-)   )
These boards are designed by Dominique F1FRV which have laid down a tremendous effort in designing these boards.
Dominique has done some minor changes to the design since these boards were made, so cards made by his latest instructions will look a bit different from these.

High voltage crowbar circuit

Published on January 27, 2012 in Electronics and Projects. 0 Comments Tags: , , , .

Have been working on a crowbar circuit for my universal high voltage power supply for some time now.
And here is a early preview of the circuit. This unit is meant to bolt right on top of my 5kV 100uF filter capacitor.
As the picture shows I have cut a air gap into the PCB to strengthen the isolation between high an lo- voltage areas on the card.

HV crowbar unit

Here is the schematics of the circuit. And I must emphasize, this circuit is not fully tested yet!!!
Crowbar circuit