Found in the September 1992 issue of Radio Electronics magazine. This circuit generates pulses that are determined by C3. The circuit has output pulse intensity and timing adjusted by R6.
We found this circuit in the July 1988 Radio Electronics magazine. The frequencies are given by...
This circuit can flash for up to 30 months using alkaline batteries as shown in the table next to the...
This circuit was found in a 1969 Mullard documentation. Used transistors can be replaced with...