This dual flasher for high brightness LEDs was found in an American documentation from the 90's. The circuit can be powered by lower voltages with the reduction of R1 and R4.
We found this circuit in a year 2000 documentation. It must be powered by a voltage of 5 V as it...
This circuit was found in the February 1990 issue of Radio Electronics magazine. The circuit uses...
Voltage comparators, such as those in the LM139/239/339 series, consist of devices that can be...