Faisalsk

modified 8 years ago

Boost converter

205

03:18:29

Can anyone help me how to make stable voltage at output 

published 8 years ago

BillyT

8 years ago

The obvious choice is a zener diode. A bit more output capacitor and the choke needs revision. http://everycircuit.com/circuit/6402108124561408

Faisalsk

8 years ago

@BillyT can you explain me your circuit

jdarkfalls

8 years ago

I think i figure out what you are looking for i dont know how to post the mod i did to your circuit

jdarkfalls

8 years ago

Use a op amp with 5v source and ground send triangle wave in inv input and the power output of the circuit at the non-inv input it make a pwm signal then have that control your transistor

jdarkfalls

8 years ago

No zener diode

jdarkfalls

8 years ago

http://everycircuit.com/circuit/5296138342367232

jdarkfalls

8 years ago

Change the variable resistor and that will change the output voltage and hold it there

jdarkfalls

8 years ago

Hope this helps

hurz

8 years ago

cute

Faisalsk

8 years ago

Thank you @jdarkfalls

Ridham

8 years ago

Add load at end...if no energy is consumed it will only chrge and voltage increasing

BillyT

8 years ago

Sorry for taking so long, for the best output, the coil needs to be smaller. The capacitor needs to be increased to hold some energy, and as Ridham says "Add a load at the end", to stabilize the energy being held by the capacitor. Once this is done the voltage can be regulated by the zener. This circuit does have a limited power out. (The wattage on the lamp has been raised)

geethesh

8 years ago

Tab on my name u will see

Faisalsk

8 years ago

Tysm everyone 😊😊😊

rayban02

8 years ago

The emitter uses 2.55 amperes. The transistor will not be too hot ? For 0.003 amperes at the lamp. Maybe you would want another ratio ?

hurz

8 years ago

@rayban02, right this is much to high driving current. Billy, right the frequency must be higher so the inductor must be lower while the cap must be increased to avoid ringing. And ringing means dampening, coming from load resistance or addition internal resistance. Cute

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