This circuit has a maximum frequency of 10 kHz and a linearity better than 0.01%. The circuit is from an 80's documentation making use of integrated of the time.
This circuit was taken from a Popular Electronics from the 1990s. The circuit triggers a relay that...
This circuit is intended to trigger an auxiliary flash with a xenon lamp as it is still used by...
This bargraph-type circuit employs a not very common integrated circuit today, but can be adapted...