This circuit was found in an 80's Poptronics. The circuit is a fast trigger whose signal can be taken from the Q2 collector. The supply can be done with voltages from 9 to 12 V.
Found in the December 1995 issue of Electronics Now, this circuit generates sinusoidal signals. The...
This circuit with transistors of the time was found in the magazine Radio Electroinics of June of...
This circuit was obtained in an old Elektor. It is a reference, since the integrated products of the...