TV_CONTROL_RECEIVER


Posted on Feb 5, 2014

Uses barium titanate transducer as microphone, tuned with 20-mh coil to provide peaks at control frequencies of 38.5 and 41.5 kc. Balanced discriminator detects the two ultrasonic tones. Frequency shift of continuous ultrasonic tone activates tuning-motor relay. Both audio and video are killed during tuning. Also provides remote on. off control of power.-N,..


TV_CONTROL_RECEIVER
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    power supply for PC
    Digital Sawtooth Generator
    microprocessor based frequency counter
    magic jack driver
    Touch Sensitive Musical Bell With Timer PCB
    Electronic toss circuit
    Musical car reverse horn circuit
    DTMF Transeivers
    Long Delay TimerCircuit
    infrared ir receiver
    Reverse voltage and over-voltage surge protection circuit diagram XTR106
    Automatic toilet flushing circuit



    Top