Biggest potentiometer for my shock box.

[Johanx2]

Hi, I am having problems with the potentiometer of this shock box. The potentiometer just lasts some days before it burns. First I used those size penny's potentiometers, but they burned too quickly, then I used those 25 cents size (0.5W) these were better, but they also eventually got burned. Could you please tell me what electronic component should I get ? I need to know if there are bigger potentiometers than 0.5w under 100K. Thanks! :lol:


**broken link removed**

 

[jamespond]

How much voltage on the secondary side?

 

[Johanx2]

How much voltage on the secondary side?

About 100v, a 50k to 100k potentiometer does the right job, but like I said, I need to know if there are potentiometers bigger than 0.5 watts, otherwise I will continue burning my pots. There are some brands that sells these shock boxes, and they are using regular potentiometers that burns too quickly.

 

[jamespond]

If you use 100k potmeter at 100v the power is 0,1w. I think the potmeter burns at near the end position. A serial resistor in the output line solve the problem.

 

[Johanx2]

Oh I see, it could maybe work. I was thinking using a 8 or more position selector switch with several 1w resistors, of course I won't have the range of continuity that pots have but if i will last forever, I think it's worth giving a try. Thanks bro, I will give a try putting a resistor in series.

 

[FvM]

I need to know if there are bigger potentiometers than 0.5w under 100K.

Yes, but probably not at your reach and not so cheap. E.g. this one https://www.vishay.com/docs/51005/pe60.pdf

 

[dick_freebird]

You might put a fixed series resistor on the wiper, to
ensure that the pot can't get too much power into it
when cranked all the way to the end.

A larger power potentiometer may still be referred to
as a rheostat, this may be a better search term if you
are looking for one later.