Tag Archives: Audio Power Amplifier

This is a The Push Pull Power Amplifier circuit. This circuit is a class B push pull amplifier. When there is no signal input, the TR3 and TR2 are not conducting. If there is no signal input, this circuit draw … Continue reading →

The transistor is biased in class A. That’s mean the collector current flows all the time. This current can increase or decrease,  caused by the input signal which increases and decreases the forward bias. This increasing or decreasing depends on … Continue reading →

The output of this circuit is push-pull and consumes less than 3mA (with no signal) but drives the earpiece to a very loud level when audio is detected. Because the whole circuit is Dc coupled, its extremely difficult to set … Continue reading →