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 traditional configuration that any Series 139 comparator can use is found in the 1990...
The circuit shown in the figure can be used to detect vibrations or to provide amplified acoustic...
This toy organ was found in Popular Electronics from January 1967. It can be constructed from...