Friday, March 1, 2013

Power Supply

POWER SUPPLY FOR DIGITAL CIRCUITS

Summary of roundabout features

draft description of operation: Gives out well regulated +5V make, end product current capability of 700 mA.
racing circuit protection: Built-in overheat protection shuts down output when regulator IC gets as well as hot.
Circuit complexity: Simple and easy to build.
Circuit cognitive process: Stable +9V output voltage, reliable operation.
Availability of components: Easy to get, uses and common basic components.
Design testing: Based on datasheet example circuit, I have used this circuit successfully as part of other electronics projects.
Applications: Part of electronics devices, undersized testing ground power supply.
Power supply voltage: Unregulated DC 5-18V power supply.
Power supply current: Needed output current 1A.
Components appeal: Few rupees for the electronic components plus the cost of input transformer.

DESCRIPTION OF POWER SUPPLY

This circuit is a small +05 volts power supply, which is useful when experimenting with digital electronics. Small inexpensive breakwater transformers with variable output voltage are available from any(prenominal) electronics shop. Those transformers are easily available, but usually their voltage regulation is very poor, which makes them not very usable for digital circuit experimenter unless a better regulation stack be achieved in some way. The following circuit is the answer to the problem.

This circuit can give +05V output at about 1A current. The circuit has gazump and terminal protection.

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IN 4007
1 3 +12V
2
1000 uf 470 uf

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