Hello all, I’m on a small tube preamp that I have. I’m removing all of the paper/wax caps and placing films. One of the values in the circuit is 2200pF or .0022uF. I have a roughly 250 .0022uF X/Y rated caps on hand so I’d like to use them as I have a lifetime supply lol. Would an X/Y rated cap function as a non safety cap in that location? It has nothing to do with the AC line, it actually connects to the volume pot. Just want to make sure it’ll work correctly.
Thank you,
Thank you,
Yes, it'll work fine provided the voltage rating isn't exceeded. MKT = Polyester so not as good as polypropylene but good enough for most people.
Thank you both, very much. Out of curiosity it says “250V~5KV”. I’m assuming it isn’t rated for 5,000 volts. 250 Vac?
Dan
Dan
The electrons have no idea if they are in a mains circuit or an amplifier, so not a problem, its simply an MKT capacitor. One thing to check is the tolerance, safety caps have very little need of precision value, whereas your circuit might have if its in a tone or EQ circuit...
They should work fine, I bet X/Y duty test is brutal and zero tolerance for failure; only doubt is about 2200pF rating, which sounds lowish for a coupling cap, which is the grid/load resistor a the other side?
If, say, typical 1M, then it will work as a highpass filter at 73 Hz ; if 470k then 154 Hz.
Is that fine for you?
If, say, typical 1M, then it will work as a highpass filter at 73 Hz ; if 470k then 154 Hz.
Is that fine for you?
He's got ".....a lifetime supply lol." Put ten in parallel. 7.3 Hz is plenty in this time of famine.
When a box of 47r 2W resistors fell off a truck and were scattered all along the road, I was using series/parallel 47r for about everything for a while. Need 1K 6W heater dropper? Twenty-one resistors, ziz-zag-zig down the side of the case.
