Video Head Tester
#video
#head tester
#signal measurement
#testing equipment
#video equipment
#diagnostics
#electronics testing
#AV equipment
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Video circuits
This page outlines the development of electronics for displaying a monochrome video image on an electrostatic oscilloscope tube. This work complements the Electron Optics section in the Experiments category. The primary objective is to showcase a moving video image using...
Video Clock Superimposer
As a followup to my VCR Pong project, here is a gadget that is actually useful in the Real World! It superimposes the time of day, in "HH MM SS" format, in the bottom right-hand corner of an existing video...
Video Tracer For Trouble-Shooting
This circuit was designed to assist installers and maintainers of video systems. It primarily consists of a video sync separator (IC1) followed by a LED and buzzer driver (IC2, Q1, and Q2). When in operation, the device connects to a...
10F15-cascaded-video-mux
Two MAX455s can be cascaded to create a 1 of 15 video multiplexer (MUX) by connecting the output of one MUX to one of the input channels of a second MUX. Although the two devices are typically placed close together,...
Video-dc-restorer
The primary requirement for efficient de-restoration is to provide a short time constant during the clamp period, while maintaining a long time constant during the active line time. The switch in the Harris HI201HS has an on-resistance of 30 ohms,...
Video Line Selector
When measuring video signals with an oscilloscope, a video line selector is very useful to find a scan line. The line selector generates a trigger pulse at the selected line; the oscilloscope will display only the selected line. This is...
Video Clock Superimposer
As a followup to my VCR Pong project, here is a gadget that is actually useful in the Real World! It superimposes the time of day, in "HH MM SS" format, in the bottom right-hand corner of an existing video...
Video Activated Relay
This simple circuit from the May 1996 Think Tank column of Popular Electronics activates a relay when it senses a composite video signal. This allows you to use the tuner built into your VCR to turn on and off older...
Video Stabilizer circuit
Have you ever attempted to copy a commercially produced video only to end up with a distorted and jumpy image? If so, then you have run afoul of MacroVision. MacroVision is the most popular copy protection scheme used on the...