Suggested by General Electric in 1965 documentation, this flasher has a control circuit with a neon-light optic coupler and LDR. The circuit is for incandescent lamps.
In the figure we have the simple way to obtain an integrator with an operational amplifier of type...
Found in 1980s documentation, this circuit uses a small transistor radio output transformer and a double...
Found in a 1969 EEE, this circuit is based on an operational amplifier of the time and on old type...