Pls I constructed a chopper circuit(oscillator) and was able to generate a pulse..but the output voltage is not big enough to light up the 12vdc bulb..what do I do..?

 

what do I do..?

First you tell us what the output pulse voltage, frequency, and pulse-width are, also the bulb wattage or current.

 

The output pulse voltage is 5v I really dont know the exact output current..i have a 12vdc source and i needto to drive the 12vdc bulb with the pulse signal..so the 12vdc bulb can go on and off as well..frequency of pulse is 2hz

 

You can use a MOSFET to control the bulb current.
Where can you buy parts?

 

You can use a MOSFET to control the bulb current.
Where can you buy parts?

I've IRF3205 mosfet...how do i connect it.

 

how do i connect it.

Connect :-
the FET gate to pin 3 of the 555,
the FET source to ground,
the bulb between the FET drain and the 12V supply.
Remove the 7805 regulator.
Drive pins 4 and 8 of the 555 directly with the 12V supply.

 

Connect :-
the FET gate to pin 3 of the 555,
the FET source to ground,
the bulb between the FET drain and the 12V supply.
Remove the 7805 regulator.
Drive pins 4 and 8 of the 555 directly with the 12V supply.

Wow...perfect...it worked just fine..thought the 555 cant operate on 12v..thanks..

 

thought the 555 cant operate on 12v.

Its data sheet tells all.

 

Its data sheet tells all.

Yh...guess I misssed out..actually that was first stage..now i have my pulse signal able to light up the 12v bulb..the initial plan was having 2 12vbulb..bulb A flashes 5 times and stops b alsso flashes 5 times and stops then A and B flashes 5 times and stops..then it recycles if possible..i've got couples of relays and timers..i already generated pulse that can help make the bulb go on and off..