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.
The astable multivibrator shown by figura 1 has a very low current drain and can be powered from 6...
This simple nicad battery charger uses a current regulator with the LM350. This integrated circuit must be...
This filter was found in an American publication from the 1980s. The circuit can be implemented with...