This circuit found in 1969 Popular Electronics is used to power a gas laser. The circuit produces a continuous voltage of 1,600 V. Diodes are high voltage types.
This circuit was found in an English operational documentation from 1970. The circuit can be...
This circuit is from a 1974 publication. It generates a pulse with several sinusoidal cycles from...
This solar cell driven circuit makes 4 LEDs run at a speed given by capacitor C2. The circuit is...