Homemade 0/12V wireless control switcher circuit

Published:2011/7/25 22:30:00 Author:Christina | Keyword: Homemade, 0/12V, wireless control, switcher circuit | From:SeekIC

Operating principle: Figure 1 is the circuit of the switcher transmitter part, figure 2 is the circuit of the switcher receiving switch part. In figure 1, when the 0/12V output port of the digital machine has the 12V voltage, it outputs the 5V voltage through the IC1, the A1 radio remote control dedicated transmitter module gets power to operate, the built-in miniature antenna outputs the ultra-high frequency modulation signal. In the effective receiving range, when the receiving circuit (figure 2) receives the modulating signal, the A2 dedicated receiver module outputs the high level pulse, the transistor VT1 conducts to drive the relay J to finish the switch between the two high frequency heads.



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