How to make voltage for the amplifier

How to make voltage for the amplifier:

This is a 12-volt circuit diagram. We can get a maximum of 15 amperes from this diagram. We can use AC 12-0-12 voltage to 25-0-25 voltage. But the output will be 12 only. Here, use one 12V regulator IC. la7812. and one 2sc5200 transistor. 

To make a regulated 12 Volt DC power supply from a standard AC wall outlet, you must first safely step down and convert the voltage.¹ This is typically achieved using a four-stage process:

Step-Down Transformer: The high-voltage AC (120V or 220V) is reduced to a lower AC voltage, usually around 12V to 15V AC, using a step-down transformer.

Rectification: This low AC voltage is converted into pulsating DC using a bridge rectifier circuit, which consists of four diodes (like the 1N4007 or similar) arranged to allow current to flow in only one direction.

 

The LM7812 is one of the most popular and versatile components in electronics. It is a three-terminal positive fixed voltage regulator Integrated Circuit (IC), belonging to the highly reliable 78xx series. Its sole purpose is to take an unregulated DC input voltage and produce a steady, regulated output of 12VDC.

Details about 2SC5200 

2sc5200 Polarity is NPN. The maximum collector power dissipation is 150 Watts. The maximum collector-base Voltage is 250 volts. Max Collector-Emitter Voltage is 250V. The Max Emitter-Base Voltage is 5V. The Maximum Collector Current is 17 amperes. 

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