TTL 7400 Oscillator (CB22458E)

This TTL oscillator was found at Popular Electronics in 1992. It provides both sinusoidal and square signals. It must be powered with 5V.

Transducers ADC Converter ADC0808 (CB14349E)
The circuit shown is from the National Semiconductor Linear Applications Handbook of 1994. using...
Photometer (CB16834E)
This photometer with bargraph indication by LEDs was obtained in a publication in 1997. The sensor...
Bridge Operational Amplifier 2 (CB15880E)
The amplifier in the figure is based on a single LM108 and has low noise compensation. In this...