Tone Oscillator (CB22066E)

Found in old documentation, this oscillator with the LM380 produces an audio tone in a speaker. Frequency is set in VR1.

741 Preamplifier with Balanced Output (CB13673E)
This circuit was found in a 1975 documentation. Operational amplifiers must have a symmetrical source and...
Acceleration to Frequency Converter (CB12772E)
The circuit shown was suggested by Analog Devices (www.analog.com) in its Application Note AN-411...
Damped Percussion Oscillator (CB12084E)
This circuit was obtained in a 1978 publication. The operational amplifier must use a symmetrical source....