random experiments..

My room heater

Multiplexed seven segment display

my table lamp

bulb blinking using relay and 555 timer ckt.

electrically controlled firework system.

pictures says it all...enjoy..

remote control

electrically connected firework

1-phase voltage source step down transformer making..

specifications:-
                      input: 230vac, 50hz
                      output : 80vac, 50hz

winding setup

winding

primary winding completed

E & I type core plates

stacking of plates

working transformer

                                         

1-phase voltage source sine wave inverter.

inverter specifications:-

                                  input voltage- 12vdc

                                  output voltage- 230vac

                                   frequency- 50hz

software used:-

                       PROTEUS.

                                      

                             

inverter ckt dia.

auto cut battery charger

switching and o/p wave

hardware testing

main ckt board(back)

main ckt board(front)

hand made transformer for low vol. supply

USB programmer

MOSFET connected to heat sink