We want to see the characteristics of buck regulator given
in datasheet of SG3524. This is our first experience of BUCK Regulator (5V)
without using the transformer and is working very nice.
Instead of TIP115 PNP transistors easily available BC557 and
BEL369 are used to form the Darlington pair. The Input current drawn is 100mA@20V
with the output of 300mA@5V. The circuit is working at 10 KHz frequency and the
inductance is 1.2mH. The Core and bobbin are purchased from the JINANICA.TO
increase the efficiency of the circuit schottky diode is used.
The circuit Diagram is taken from the SG3524 datasheet: click here fig 3:
The pictures of buck regulator is given below:
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