2007-03-27 15:14:05 · 3 answers · asked by lykurdwn 1 in Consumer Electronics ➔ Other - Electronics
>Yes, the capacity is the same, the voltage is rated higher (which is OK if I read your question right...anyway it's OK to use a higher voltage rating to replace a lower one...doing it the other way around 'might' cause a problem)<
2007-03-27 15:19:21 · answer #1 · answered by Druid 6 · 0⤊ 0⤋
If you mean you plan to replace a 370v cap with a 350v cap, this could pose a problem.
Sounds like you are tinkering inside a switch-mode power supply of some kind.
The important thing to understand, is what is the normal running voltage of that cap.
You kinda need to know this - most designs are conservative, however, if the circuit runs at 360v or so, and you put a 350v cap in there, the cap could explode.
This happens, because once you reach a certain threshold voltage, the voltage can break down the insulation inside the cap, and jump across the + and - wires(internally), essentially shorting out the cap. If the cap is a decoupling cap across the rectified mains(sounds like it probably is), this presents a dead short across the main power supply, and also shorts out the charge stored in the cap, and BANG!
...the cap physically explodes, and usually blows parts of the power-supply too, as it has been shorted out via the failing cap.
Electro caps DO NOT like overvoltage(or reversed polarity).
You really need to establish the normal voltage on the cap.
If the voltage is 300v or so, there will be no problems.
If you are taking measurements with the circuit running, be very careful, as these voltages(even though they are DC) can kill instantly...
2007-03-28 00:06:12 · answer #2 · answered by Grogster 3 · 0⤊ 0⤋
NO!
It could very well cause a disruption in the time-space continuum. Please for creation's sake DON'T DO IT!
J/K....I don't know.
Sound reasonable to me though.
Good Luck
2007-03-27 15:16:52 · answer #3 · answered by Love Answers 2 · 1⤊ 0⤋