2MHz astable (CB9102E)

This TTL circuit can be used as a shield. The frequency can be changed by changing the capacitors.

Half Hertz Bandpass Filter (CB25360E)
This 0.5 Hz filter was found in the December 1990 issue of Radio Electronics magazine. The power...
Switching Regulator 78xx (CB15162E)
This circuit was obtained in the SGS manual of linear integrated circuits of 1982. The maximum...
Linear LED Control (CB11573E)
This circuit allows linear brightness control of an LED from an input voltage. The power supply must...