Posts: 43
Joined: Tue Sep 20, 2011 2:17 pm

Re: Great tutorial on linear voltage regulators.

Sat Oct 22, 2011 9:57 pm

Just thought that I'd post these because I find his videos easy to understand and I also thought that it could help some people fairly new to electronics wondering how they're going to power the raspi. I'm thinking about buying rechargeable NiMH batteries to power mine.

My two only other questions are, Can I power a Raspi model B,small usb hub,keyboard,mouse, and a micro wireless dongle off batteries? Or will I need more amperage?

Can more supplying a little more voltage,(unregulated) (say 5.5v-6v dc) be enough to seriously damage something?

And if you want to learn about adjustable voltage regulators, you can check this video out.


Posts: 48
Joined: Sat Sep 10, 2011 8:28 pm

Re: Great tutorial on linear voltage regulators.

Sat Oct 22, 2011 11:15 pm

I'm also wondering if I can run R-Pi + usb-harddrive from a 1A power-adapter.

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Re: Great tutorial on linear voltage regulators.

Mon Oct 24, 2011 12:07 pm

You'll have to wait for exact details on input voltage margins. Best bet is that it'll be +/- 5% like most 5volt devices

Just cash out for a voltage regulator, they're only a couple of dollars. LM7805 is awful, LM2595 or LM2596 is all right. NiMH batteries (regulated) should be sufficient for powering everything

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