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一、给万用表增加红外遥控接收附加器在检修各种家电红外遥控器时,由于各种遥控器的中心频率不同,因此,修好后的遥控器,无法判别其好坏,只能在原机上试验。有时用收音机试听,虽然能听到嘟嘟声,但在原机上还是不灵。本人在实践中制作了一个红外遥控接收电路,电路见图。在万用表lmA挡上使用,非常方便。下面介绍制做方法。
First, to increase the infrared multimeter to receive infrared remote control Receiver In the maintenance of various home appliances infrared remote control, due to various remote control center frequency is different, therefore, repaired remote control, can not determine its good or bad, only the original machine test. Sometimes audition with the radio, although can hear beeps, but still not working on the original machine. I made in practice an infrared remote control receiver circuit, the circuit shown. Used in the multimeter lmA block, very convenient. Here’s how to make the system.