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Voltage regulator, which is + and which is -?
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Topic: Voltage regulator, which is + and which is -? (Read 2123 times)
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SeagullOne
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Humans and Robots working together for our future.
Voltage regulator, which is + and which is -?
«
on:
October 18, 2008, 04:52:12 PM »
I'm sure someone's asked this question before--tried doing a search but didn't find it...
I'm constructing a simple circuit for providing power to a microcontroller using a 5+ volt regulator from Radioshack. My problem, I can't make heads or tails out of which is the input pin and which is the output pin! Or is the voltage regulator polarized at all? I've studied my books but can't find the right pins...
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pomprocker
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Sorry miss, I was giving myself an oil-job.
Re: Voltage regulator, which is + and which is -?
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Reply #1 on:
October 18, 2008, 05:53:07 PM »
Middle is ground. The other two are input and output.
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airman00
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narobo.com
Re: Voltage regulator, which is + and which is -?
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Reply #2 on:
October 18, 2008, 05:59:47 PM »
Google is your friend
http://images.google.com/images?q=7805%20regulator&ie=UTF-8&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&sa=N&tab=wi
First result :
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SeagullOne
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Humans and Robots working together for our future.
Re: Voltage regulator, which is + and which is -?
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Reply #3 on:
October 18, 2008, 06:05:54 PM »
Thanks everybody.
I'll try to search a little more practically from now on.
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.......
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szhang
Robot Overlord
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Re: Voltage regulator, which is + and which is -?
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Reply #4 on:
October 19, 2008, 01:54:26 AM »
Next time, make sure to go online and find the datasheet. Some regulators (like the LM317) have a different pin-outs even though they look the same (same packaging).
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Voltage regulator, which is + and which is -?