Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: SeagullOne on October 18, 2008, 04:52:12 PM
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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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Middle is ground. The other two are input and output.
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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 : (http://bleex.me.berkeley.edu/ME102/proj_archive/S05/18-Inverted_Pendulum/images/Hardware/7805.gif)
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Thanks everybody.
I'll try to search a little more practically from now on. :D
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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).