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Converting 12v DC to 5v DC Answered

Greetings,

I’m very new in electronics. I would like to connect my analog camera that uses 5v dc to my car battery. So I need your help to make a voltage converter. From what I have understand searching the web, I will be possible and very easy actually. All I would need is an opamp and some resistors?!!! Right? So any diagram or anything that you can help me with will be more than appreciated.
Thank you for your time reading this.
Best Regards

P.S. I hope I’m in the right place writing this topic

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steveastrouk
steveastrouk

10 years ago

What you need is a 5V VOLTAGE REGULATOR, that can handle the current your camera will consume. There are plenty of circuits on the web for such things.

Steve

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toqilula
toqilula

Reply 10 years ago

Hi Steve,
yes your right and. I got it now all figure it out. i just had to search for "5V VOLTAGE REGULATOR" keyword and there you go. as many as you like outhere. If i may post this, is yet the best way of doing it described in the web: http://blog.arieldelafuente.com/2009/11/07/5v-regulator-using-the-7805/

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steveastrouk
steveastrouk

Reply 10 years ago

Yes that's not a bad idea.

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htariq
htariq

Reply 9 years ago

But a lot of power would be wasted this way... I mean, 7805 will dissipate the unused power as heat... Don't we have a more 'energy-efficient' way?

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steveastrouk
steveastrouk

Reply 9 years ago

Yes, there are lots, but you have to consider the camera dissipation, which is likely to be less than 1W, and the dissipation, also < 1W. Is it worth the cost and complexity ?

Steve