【摘要】 给出由单片数模转换器构成程控增益放大器的设计示例及其与微机的接口电路 ,并实验测试该放大器的性能。这种放大器在低频智能仪器及工业控制等方面有广泛用途。更多还原

【Abstract】 A type of program-controlled amplifier consisting of the D/A converter is introduced and the design example of the amplifier and its interfaces with the microcomputer is given. The function of the amplifier is tested in the lab. This amplifier can be applied to the low frequency intelligent instruments and industrial control system.更多还原