Found in American documentation from the 1980s, this circuit shows how to use an LM3909 pulsator in a high-power variable circuit.
This circuit drive an LED with constant current determined by the values of the resistors of 10...
Originally the circuit in the figure is indicated by National for the control of an electronic car injection...
This circuit, found in a publication of the year 1968, uses a MOSFET at the input to increase...