Receiver for the 40m band LM602 (CB25305E)

This circuit uses an FM IF transformer for tuning. The circuit is from a Radio Electronics magazine from April 1990.

Overcurrent Locked Current Sensor (CB5904E)
This circuit that also has a Power On reset was obtained from a 2005 Linear Technology manual. The...
150 Hz to 1.5 kHz Wien Bridge Oscillator (CB25907E)
This circuit was found in the December 1995 issue of Electronics Now magazine. The circuit...
CMOS Crystal Oscillator (CB25578E)
The figure shows how to use a CMOS amplifier as a crystal-controlled oscillator. The circuit is...