When an alternator is used to supply constant current, it needs an adjustment that must be made as shown in the figure. The potentiometers are of low wire value with high dissipation.
This circuit was found in an American documentation from 1976. We can assemble it with two 741,...
The circuit shown fires an auxiliary flash from a flash commanded directly by the camera. The sensor...
This circuit, which presents a certain danger and should be used with caution, was found in the...