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5V regulator on 45V

5V regulator on 45V
The Type 7805 voltage regulator cannot handle input voltages higher than 35 V. If only voltages higher than 35 V are available, it is, of course, possible to shunt the input with a zener diode. However, since prices of standard voltage regulators are low, there are advantages in using a second regulator: the stability of the output voltage as weIl as the hum rejection will be improved appreciably.
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