This circuit can flash for up to 30 months using alkaline batteries as shown in the table next to the diagram. The circuit is from a Radio Electronics from January 1992.
This two-transistor circuit was found in the August 1972 issue of Radio Electronics magazine. The...
This circuit was found the Optoelectronics Sourcebook by Texas Instruments. Any phototransistor...
The logarithmic response of this amplifier with operational is given by the presence of the...