How to make dual power supply

How to make dual power supply:

How to make a dual power supply we can see we use two 30-0-30 voltage transformers to make this 70-35-0-35-70 voltage. here use only four capacitors but we have to use more capacitors to get good amperes. also diode needs a heat sink. two diodes for two volts. one diode for the high voltage and another diode for the low voltage.

12 voltage amplifier circuit diagram 

Build a Transformer or construct the transformer. Home Theater Circuit Diagram 5.1

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