We found this circuit with duty cycle adjustment in the May 1988 Radio Electronics magazine. The source must be symmetrical, and the frequency given by R3 and C1.
This is the receiver for the previous circuit transmitter. Similarly, no information about the...
This circuit is quite old, from 1964, but can still be mounted with BC558 transistors. The circuit is...
August 2016 - Mouser Electronics already has in stock the new DIO5151 LED Drivers DIO5151 with an...