Found in Radio Electronics from the 90s, this circuit has several outputs with different pulse times. The circuit is CMOS and can be powered by voltages from 5 to 15 V.
We found this circuit with the CMOS4046 in the August 1994 Electronics Now magazine. The circuit is...
This configuration of PWM control with the LM317 was found in a Popular Electronics from the 90s....
This oscillator by Wien bridge is based on stabilization by a small incandescent lamp. The...