Class B amplifier circuit
Amplification circuit with transistor static working point set at cut-off point is called Class B amplification circuit, which is suitable for high-power amplification. The advantage of class B amplifier is high efficiency, but the disadvantage is that it will produce crossover distortion.
Negative power supply and triode
7905 is a negative power supply, 90 14 is a triode, and 386 is an operational amplifier.
Square wave and integral operation
Square wave is triangular wave after integration.
signal generator
A signal generator is a device that generates a signal with a certain frequency and amplitude. Used as an input signal for other devices. No input signal is required per se.