Embedded
system requires a regulated power supply. This power supply circuit gives a
variable regulated supply and switches off in no load condition.Through an
arrangement of voltage regulator 7805 and a potentio-meter the output voltage is
varied from 3.7V to 8.7V. Another feature of this power supply is, when no load
is there it automatically switches off. It is achieved through an arrangement
of transistors and relay.
HARDWARE REQUIREMENT:
- TRANSFORMER.
- RECTIFIER.
- FILTER
- REGULATOR.
- RELAY.
- TRANSISTOR (BC 547 & BC 557).
- RESISTOR.
- CAPACITOR.
- 1N4007.
