Amplifier - Wikipedia, the free encyclopedia
1 Figures of merit 2 Amplifier types 2.1 Power amplifier 2.1.1 Power amplifiers by application 2.1.2 Power amplifier circuits 2.2 Vacuum-tube (valve) amplifiers 2.3 Transistor amplifiers 2.4 Operational amplifiers (op-amps) 2.5 Fully differential amplifie...