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  1. Brandyn

    Old Electronics Parts & Diagrams

    It is an old analog switching power supply for electronics testing. The housing says PTS Electronics (Which was an electronics repair shop in Indiana) I'd say they custom build, or had it custom built when it was new and repaired it when it needed repaired. It has 4 leads with knobs (variable...
  2. Brandyn

    Old Electronics Parts & Diagrams

    There are no printed circuit boards. There is an old style of board, it kind of looks like an old peg board but smaller, that a few of the components are mounted to with leads soldered to a medium guage of wire. Hence the rats nest appearance. You can actually see the only board in the unit...
  3. Brandyn

    Old Electronics Parts & Diagrams

    73 de Edd, Thanks for your reply. I am glad that my wild thinking was wildly off. I've been thinking the part over for several days and my imagination was probably getting the better of me haha. I've never heard of a series filter, I will have to look that up when I get home. The supply unit...
  4. Brandyn

    Old Electronics Parts & Diagrams

    It is. The small transformer (if that's what it is) is has two leads off the side of it. I'll try taking some better pictures and get a better idea of what the transformers lead to and add an update shortly. I will cut one out of the curcuit to get better pictures.
  5. Brandyn

    Gargoyle motion activated LED's and sound relay problem

    The relay you have pictured requires 4v to activate. If your PIR sensor only outputs 3v that would cause the relay not to trip reliably. Have you tried a relay with a 3v coil instead? Below is a link with information on the relay you are trying to use. http://www.ic72.net.cn/pdf_file/f/290255.pdf
  6. Brandyn

    Old Electronics Parts & Diagrams

    I am working on an old desktop power supply unit. There are no PCB's and I thought the best way to start repairing it would be to build a wiring diagram. While working on it I found three transformer pairs tied together in a manner which I am unaccustomed. I have attached our images of one of...
  7. Brandyn

    Hello!

    My name is Brandyn, I'm an electronics hobbyist. By trade I'm a pc service technician and software developer. I'm 22, and am new to this forum. I have been interested in electronics for a long time but have only recently really picked up the tools to do much with them. I've done smalls repairs...
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