Signal injector

[Ljmnunes]

Hello everybody!

In the late 70s, I was a radio and TV repairman. To help me I made a simple signal injector based on some scheme that I found in a magazine here in Brazil.

It worked very well, but he had a problem. Its size was not comfortable because there were no small capacitors in my city!

So my goal for the next few years was to make the injector as small as possible. For many years I remade it, but never as I wanted.

Then I left my job and forgot about it... Until now.

This is my smt version of an old and traditional signal gun, my gift to you. You can use any 1.5 V cell you want. I do not tested it yet, but it is very simple.

Enjoy