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I want to increase my 4.5v DC to 9v DC (actually little above 9v. 10v will be good), so plz help me out for this...? Answered

 and current 0.5Amp is required......hoping any voltage multiplier circuit can do it. plz help. 



srrry bad English!!

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anuk07steveastrouk

Answer 7 years ago

i just can not get the design is it necessary to sign in in this particular site?????

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steveastroukanuk07

Answer 7 years ago

Maybe, but it needs Java running I think.

Steve

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anuk07steveastrouk

Answer 7 years ago

i got the various available circuits from the link but can i use 12 v @350 mA instead of 9v 500mA on a DC motor .........is there any change in the RPM of motor?????

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steveastroukanuk07

Answer 7 years ago

No, because the motor will try and pull more than 500mA from your 12V supply, nearer 750mA.

Steve

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The Skinnerz

7 years ago

You can build a charge pump- a circuit that charges multiple capacitors in parrallel, then discharges them in series, to output a multiple of the input voltage. I think you can get low power charge pumps on a single chip, so that may be better.

Alternatively, DC-DC converters exist, but I do not know how suitable they would be.

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anuk07The Skinnerz

Answer 7 years ago

http://www.eleccircuit.com/converter-9vdc-to-12vdc-for-solar-charger/

can i use this circuit .....for 4.5v dc input???

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steveastrouk

7 years ago

You can't transform DC without special circuits called "switch mode" power supplies. With two or three extra components, you can build a step up, or boost power supply using chips called "simple switchers", but if you don't know much about electronics, they are not to be recommended.

You can buy off the shelf blocks, called DC-DC converters which do it for you but they are quite expensive.

Steve

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anuk07steveastrouk

Answer 7 years ago

i can build circuits...can you tell me in detail about building a step up, or boost power supply using chips called "simple switchers"....or alternative links so that i can work on them...and also can building a DC-DC converter will be cost effective......if yes then what are the requirements for building DC-DC converter...