This 1969 circuit generates a high voltage that reaches 100 V from 16 V. The power is of the order of 280 mW. The number of diodes determines the voltage multiplication.
This VCO makes use of components from the 1980s. The circuit can be implemented with modern...
This circuit uses an LDR as a sensor to trigger an LED indicator at a preset lighting level. The...
This circuit was found in a 1968 General Electric documentation. It has an input impedance of 2 M ohms...