Based on the Linear Technology LTC2054, this -48 V circuit was found in a 2005 manual. The circuit is powered with 5 V and can be used as a shield.
We found this circuit in the October 1992 Radio Electronics magazine. The frequency is given by C1...
This TTL counter was found in the March 1991 issue of Radio Electronics magazine. The circuit is...
This transistorized oscillator, a modification of the Colpitts oscillator, was found in the...