This circuit was found in the May 1959 Radio Electronics magazine. Its purpose is to provide bias voltages for circuits under test. The circuit is isolated from the power grid.
The circuit shown is a white noise generator using a zener diode as a source of noise. The...
This circuit decodes a two-bit value into four outputs (one of four). The circuit must be powered by...
In the figure we have an anti-ring or debouncer circuit with 555. The duration of the pulse is...