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Power Supply circuits diagram electronics projects

Power Supply circuits diagram electronics projects: battery chargers, switching power supply , ac power supply, dc dc converters, power inverter, converters and power adapters .

High current power supply using L4970A L4974A 5-12V

Using L4970A and L4974A step down monolithic power switching regulators can be made using few external electronic components a high current power supply electronic project.

Circuit Diagram: 
L4970A L4974A power supply coil cores
High current power supply diagram using L4970A L4974A 5-12V

Constant current source circuit 15-50V range

Constant current source circuit (Istab ~ 4mA) shown in diagram below is a dipole type and requires very few electronic components.

Circuit Diagram: 
Constant current source circuit

15V symmetric power supply circuit

This 15V symmetric power supply circuit has a pair of polarized Darlington amplifiers from a 1N4001 diode and can transform an unbalanced voltage of 30 V in a balanced voltage of ± 15 V. The voltage and current supplied by the symmetrical source depends on the type of output transistors used . With the use of specified components circuit can provide 1 A, in standby, the circuit consumes through diode a current about 12 mA.

Circuit Diagram: 
15V symmetric power supply circuit


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