What's the difference between bridge rectifiers: (25A 1000V) vs. (50A 1000V)? Can I use them interchangeably?
My Rig:

-Peavey T-40
-Fender Bassman 250/210
-Boss Bass Overdrive ODB-3

"Rock and Roll is the only religion that will never let you down!" - Lemmy Kilmister
one handles 50A and the other does 25A. you can use either, both are way more then you need for a guitar amp.
Prs se Holcomb is the answer
You can use either. The difference is that the 50A one can take a rougher beating.

The A stands for ampere, and is the amount of electrical current a unit is able to handle. V, or voltage defines - simply put- the "pressure" of said current. Combination of these two, after taking resistance in consideration, gives us Watts. Watt is a measurement for the energy put through. Hence, a 50A*1000V= 5kW, and a likewise, 25A * 1000V can take up to 2,5kW. Either one is fine for a guitar amp - you won't have to worry about 2,5kW being smacked through a guitar amp.
Last edited by ziggymidget at Jun 18, 2011,
Quote by ziggymidget
Combination of these two, after taking resistance in consideration, gives us Watts. Watt is a measurement for the energy put through. Hence, a 50A*1000V= 5kW, and a likewise, 25A * 1000V can take up to 2,5kW. Either one is fine for a guitar amp - you won't have to worry about 2,5kW being smacked through a guitar amp.

No... for diodes it is not usually wattage that the diode can take. A diode that is conducting will drop roughly .7V, and whatever current will flow across it. A diode that is not conducting will not allow current to flow.

The 1000V rating is the Peak Inverse Voltage that can be applied to a rectifier. When you have an AC voltage, half of the cycle (The positive or negative) cycle will be blocked by certain diodes in the rectifier. This 1000V rating is the largest possible voltage that it can block. So if you hypothetically had a 1500V RMS AC signal, then you would fry the rectifier.

The PIV of your rectifier should probably be about twice whatever the voltage you will be putting on the rectifier if you are using a bridge rectifier, and 3 times if you are using a full wave rectifier. Most "rectifiers" that you buy are going to be bridge rectifiers.