#42: Composite Video on an Analog Oscilloscope using XYZ - Lab tour...

One more video playing with the Z-axis input on an analog oscilloscope. This time, I turn the scope into a composite video monitor by creating X and Y sawtooth ramp signals from the vertical and horizontal sync pulses. For this hack, I use an LM1881 Composite Video Sync separator to easily extract the sync pulses from the composite video, then a couple of transistors to create the sawtooth waveforms, and finally a simply inverting amplifier to invert the video signal so that the resulting image on the sco