Found in a 1980s publication, this circuit can be modified to use modern components and operate at lower voltages. The power supply does not have to be symmetrical.
This circuit only detects variations in light falling on the sensor. The circuit uses an LM380 as a...
This latched switch configuration was obtained from National Semiconductor documentation on the...
This electronic roulette circuit with 10 numbers was found in a Popular Electronics from the 80s....