4 Stage 555 Timer for Video Cam Control
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4 Stage 555 Timer for Video Cam Control schematics

4 Stage 555 Timer for Video Cam Control schematics

SW1-LED and R14 are an optional test indicator for setting up the cam.

C5,6,7 and 8 are 555 stability capacitors to prevent false triggering due to power supply spikes.

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Power supply bypass capacitors are not shown. Place 330μF to 1000uF caps across power rails between timing section of circuit and relay / solenoid section. Place o.1uF caps across all IC power pins as close as possible to the IC's.

To minimize power consumption - use large value "R"s for R2, 4, 6 and 8. Up to 1Megohm. Circuit consumes approx 0.6mA at rest.

Title: 4 Stage 555 Timer for Video Cam Control
electronic circuit
Source: unknown
Published on: 2005-08-15
Reads: 1742
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