The load draws nearly 400mA. With the output directly from the rectifier there is about 5v pk-pk
ripple
in the output. Using the output at the emitter of the transistor things are much better. The
circuit will
take a few hundred milliseconds for the output voltage to stabilize and reach maximum value.
The
advantages are that a smaller, less costly reservoir capacitor can be used with this circuit to
give a
high quality smoothed supply.
Power Supply Circuits
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