It’s simply the bias on the output devices that determines the level of power afforded in Class A. Such bias allows, or not, whether the output device can swing a given power level through the entire 360 degrees of the duty cycle. The limiting factor is heat and this must be managed effectively, otherwise, the device will fail, sometimes catastrophically.
Is there an actual difference between AB and A/AB ?
Almost all high end linear audiophile power amps which are not pure Class A sell some story about being Class A up until a certain power output, then switching to AB.
Excuse me, but isn't this actually AB to start with?
The whole point of AB is that you run with some bias current to prevent complete transistor shut off at the crossover frequency. This whole "our amp is Class A up until n watts" seems like hype.
Am I wrong?
Best,
E
Excuse me, but isn't this actually AB to start with?
The whole point of AB is that you run with some bias current to prevent complete transistor shut off at the crossover frequency. This whole "our amp is Class A up until n watts" seems like hype.
Am I wrong?
Best,
E