hi dear

[the eagle]

hi i need the law of the induction coil to change the out of that circuit in the attach up to 20 volt dc

 

[Mikebits]

Try this link honey.

LM2577 - SIMPLE SWITCHER Step-Up Voltage Regulator

 

[the eagle]

thanks so muchhhhhhhhhhhhhhhhh for that wonderful explanation.
but i want to made the induction coil with my hand please just i need the law for made it and more ,because there are no ready coil

 

[Hero999]

I would not advise that you use a hand made coil, I recommend buying on specially made.

 

[the eagle]

I would not advise that you use a hand made coil, I recommend buying on specially made.

why mr. Hero999 i can,t do this
i want to try maybe i,ll succeed with.
thanck for admonition but let me try please .
i,m so happy withe your participation.