This simple circuit lets you run a 1W LED from the battery of your car. IC MC34063 is
used here as a buck converter. It is a monolithic switching regulator sub-system intended
for use as a DC-DC converter. The device consists of an internal temperaturecompensated
reference, a comparator, a controlled duty-cycle oscillator with an active
current-limit circuit, a driver and a high-current output switch. These functions are
contained in an 8-pin dual in-line package. Another major advantage of the switching
regulator is that it allows increased application flexibility of the output voltage [5].
used here as a buck converter. It is a monolithic switching regulator sub-system intended
for use as a DC-DC converter. The device consists of an internal temperaturecompensated
reference, a comparator, a controlled duty-cycle oscillator with an active
current-limit circuit, a driver and a high-current output switch. These functions are
contained in an 8-pin dual in-line package. Another major advantage of the switching
regulator is that it allows increased application flexibility of the output voltage [5].
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