VCR Video Detector Switch Controller Circuit

VCR Video Detector Switch Controller Circuit




VCR Camera Video Detector Switch Controller Circuit

This video detector switch controller circuit uses the video output from a VCR or camera to control a relay.

VCR Video Detector Switch Controller Circuit Diagram

PARTS LIST
R1 10KΩ
R2 10KΩ
R3 1KΩ
R4 33KΩ
C1 1µF 16V
C2 100µF 16V
D1 1N4148
D2 1N4148
D3 1N4001
Q1, Q2, Q3 2N2222
RL1 12V or 9V Relay

A1 = To video output

A2 = To circuit under control

Video turns on Q1, cutting off Q2, allowing Q3 to be forward biased, activating relay RL1.

2N2222 NPN switching transistor pin configuration

2N2222 Pin Configuration

You can use the timer in your VCR and this unit to generate long time delays as well.

video detector switch circuit design VCR Camera Video Detector Controller Circuit




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2 comments on “VCR Video Detector Switch Controller Circuit
  1. Sonny says:

    Unbelievable how well-witretn and informative this was.

  2. Mohit says:

    Hi,

    Can I make this circuit at 3.3 V or 5V instead of 9V ?
    Kindly let me know.

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