4 Stage 555 Timer for Video Cam Control
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.
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: 1705
Print version: 
Other electronic circuits and schematics from Video and TV
-
Video multiplexer uses high-speed op amps
-
Audio / video switch
-
Isolation between antenna network and TV/radio equipment
-
UHF Preamplifier
-
LH0032 Video Amplifier
-
Video/Audio Wireless Transmitter
-
Video Distributor Amplifier
-
Composite color video signal travels on twisted-pair cable
-
Driver for Multiple VGMonitors
-
Video monitor adapter enhances oscilloscope