Dim Bulb Tester Schematic. What the heck is this thing? A light bulb tester is often suggested when testing a new or modified circuit.
About 12 inches of extra wire of same gauge as above line/mains cord. While i don't recommend anyone to make what i have made here specifically, isolation transf. I wanted something that i wouldn’t be embarrassed to sit next to the beautiful vintage radios i was working on.
Web for me, this conflict lead me to building my own dim bulb tester (dbt, also known as a poor man’s variac) as a substitute. Here is another video on the dim bulb tester Connect all the green stuff together.
Ive attached a drawing of how i believe i should map the wiring thru a single pole switch and in to a simple bulb socket that will have a 65 watt incandescent bulb in it. If the equipment has a catastrophic fault, e.g. I wanted something that i wouldn’t be embarrassed to sit next to the beautiful vintage radios i was working on.
For those of you who restore vintage electronics, like radios or tvs, you know the importance of powering up an untested device slowly (for those of you who are new to the hobby see this article from antiqueradio.org). Web vintage dim bulb tester: Web if you have never before heard about a dim bulb tester, it is a device that helps you to connect an incandescent light bulb in series with whatever device that you are testing.
Why do you need one?additional resources: I built the tester out of spare parts. The tester adds an incandescent light bulb in series with whatever device that you are working on and it serves as a current limiter where it prevents a large amount of current to flow through the device.
With higher wattage bulbs, the bulb doesn't light at all. Web i get this question from subscribers here and there: Mains power comes in on the lefthand side and is provided to the rest of the unit through an input power dpst switch.
