capacitorcomponents
I have a ceramic disc capacitor that got cooked in a power surge due to a faulty generator. The capacitor was between the fuse and transformer of a circuit board for a pellet stove.
It is RED with and though damaged, I can make out two lines of text
50L10
0933
I believe the first line its a 250volt with 10% tolerance.
But not sure how to read the 0933 because everything I found on the web talks about 2 and 3 digit codes.
Any help would be appreciated.
I am pretty sure it will be a 9pF, 1kV, 5% tolerance ceramic.
See the Wiki page on Capacitor Markings for an explanation of the commonly used markings. Another page with similar info here.
If you mean that round white thing- that's an interesting question. I'm guessing it might be an ultrasonic (or maybe high frequency sonic) piezo element that resonates with the black cylindrical drum-wound autotransformer or inductor or tapped inductor (some inductors have an extra leg for support that is non-functional electrically).
The inductor looks like a ferrite bobbin wound with wire, but it's got a length of black shrink-wrap tubing over it to protect the windings.
Here's a typical inductor of this type:
Then you'd only need perhaps a single cheap transistor and maybe a resistor to generate the 'joke' electrical shocks.
Best Answer
I added your image.
Appears to be a MOV (Metal Oxide Varistor), whose job is to absorb voltage spikes and surges, which it appears to have done heroically.
You can find a whole family of similar devices here - you can choose parameters from the tables to limit the range of types of device, voltages, energy etc.
You'll find that these look suspiciously similar. From $US0.28 in ones for here. These are examples only. Many more.
Typical specification table below. You care mainly about continuous AC voltage rating and peak current and/or energy handling. Peak current ratings and Joule energy handling should be as large as you want to afford.