Hey guys. Sorry if I worded that title wrong. My question is what is the purpose of the capacitor across the primary side of the output transformer which is used on some amps, this one for example:
Look at that 3,3n capacitor on the output transformer. What does it do? What happens if it gets removed? Can it be a source of muffled sound in an amp?
Look at that 3,3n capacitor on the output transformer. What does it do? What happens if it gets removed? Can it be a source of muffled sound in an amp?
If you do remove the cap, do measure the output with an oscilloscope before connecting the amp to a speaker. The cap is often used to extend the bandwidth or tame the ringing of a cheap output transformer. If you just remove it, the amp may oscillate. Oscillation can happen at supersonic frequencies and destroy your tweeters.
Tom
Tom
The capacitor "evens" rising inductance of the loudspeaker's voice coil at high frequencies. This in many ways helps to stabilize amp's operation in regards to overall oscillation as is or during "clipping". Preferably you'd fit a series resitor to the cap so that the amp doesn't have to drive "short circuits" at highest frequencies.
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