Two-Tone Audio Generator (T326E)

This 1965 circuit generates 250 to 2,000 Hz tones with quality sine waveform. The power supply is not given and the tubes are of well known types.

Flip Flop With SCRs (CB4864E)
This circuit appears several times on our website and in this section, for various purposes and minor...
Current Sensor and Fuse Monitor (CB5222E)
This circuit is from a 2005 Linear Technology LT6100 Application Note. The circuit provides a...
Instrumentation Amplifier with Differential Input (CB4929E)
The integrated circuit used in this 80's differential amplifier is a quadruple version of the 741...