Non-inverting amplifier (CB9018E)

Found in documentation from the 70s, this circuit uses an operational one from that time. It goes for modern equivalents.

Temperature Compensated Crystal Oscillator (CB6144E)
This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it...
Mixer LM3900 (CB13690E)
This 1975 documentation circuit must use a 6 to 9 V symmetrical source and the signal cables must...
Debouncer using PUT (CB8389E)
This circuit was found in documentation from the 1970s. It eliminates contact bouncing, providing...