Electronic Project of Picture Fixer Inverter
It is a simple and low-cost Electronic Circuit Project of Picture Fixer Inverter Circuit. The circuit will accept a video signal, separate the sync pulses, invert the video, and add new video to the old sync pulses. The video signal is brought in through Jl and applied to a clamping circuit consisting of Cl, Dl, D2,D3, Rl, and R2. The clamp circuit forces all of the sync pulses to align with the same de voltage level. With the video voltage clamped, the trip points of the comparators that follow can be set with trimmer resistors R3 and Rll. Picture Fixer Inverter Circuit Diagram: The resistors will not have to be readjusted. One comparator, Ul, is adjusted to change states with a change in either video or sync-pulse levels. The other comparator, U2, is adjusted to trip on changes of sync-pulse levels only. The output of Ul now consists of a logic level, 0 to +5 V, signal that contains both sync pulses and video. The composite signal is coupled to an EXCLUSIVE-OR gate, U3a, where it is...