Test interface (CB8222E)

Found in 90s Popular Electronics this circuit amplifies signals over a wide range of frequencies.

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Light pulse analyzer (CB8300E)
Originally designed to analyze the shape of light pulses from a flash for photographic...
Oscillator 4001 (CB14985E)
This CMOS oscillator circuit generates signals up to a few megahertz, depending on the capacitor value....
Variable Wien Bridge Oscillator (CB25964E)
Generating sinusoidal signals from 1.5 to 15 kHz, this oscillator uses common complementary...