Hacked Gadgets Forum

November 20, 2009

Vacuum Tube Prototyping Design Board

at 6:52 pm. Filed under DIY Hacks, Electronic Hacks


Prototyping circuit designs are usually needed even after a circuit design has been developed in conjunction with a circuit simulator. Bruce Heran built this Vacuum Tube Prototyping Design Board to allow to test designs quickly and easily.

"I have frequently found that the models do not agree with the final build. Some are right on, but most are off enough to turn a good idea into a waste of time. Thus the need to quickly prototype designs. Now I could have created this board with many additional features – speakers, output transformers, LEDs… But what I needed was a simple way to test single stage tube circuits. So for simplicity I wired the tube pins together (pin 1 to pin 1 and so on). The leads from the pins are brought out to terminals on a “Euro” style terminal strip. I included several other “Euro” strips, a pair of RCA jacks, a 100 k-ohm variable resistor and solderless prototype breadboard. This solderless breadboard is available in various sizes from several sources."