riccardo
Member
Hi,
I have a 40W audio amplifier which is designed to drive speakers down to 4 ohms. I also have a power transformer which obviously behaves nothing like a speaker. If I hook the amp directly to the transformer, it sort of works, but will trip the protection circuits much of the time.
If I add lots of turns to the transformer primary, the amplifier drives it just fine, but due to the reduced turns ratio, the voltage output is not very good.
I think I need to match the impedance so I can drive more current into the transformer primary. Can I simply place another transformer between the amp and output transformer to do this? e.g. 100 turns on the side with the amp, 20 turns on the side which will connect to the output transformer primary, therefore letting me drive more current into it for a better voltage output?
I have a 40W audio amplifier which is designed to drive speakers down to 4 ohms. I also have a power transformer which obviously behaves nothing like a speaker. If I hook the amp directly to the transformer, it sort of works, but will trip the protection circuits much of the time.
If I add lots of turns to the transformer primary, the amplifier drives it just fine, but due to the reduced turns ratio, the voltage output is not very good.
I think I need to match the impedance so I can drive more current into the transformer primary. Can I simply place another transformer between the amp and output transformer to do this? e.g. 100 turns on the side with the amp, 20 turns on the side which will connect to the output transformer primary, therefore letting me drive more current into it for a better voltage output?