Author Topic: Circuit Schematic Antics  (Read 1358 times)

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Offline SlotheryTopic starter

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Circuit Schematic Antics
« on: August 17, 2010, 09:07:35 AM »
Alright so I am reading the book "Getting Started in Electronics" by Forrest M. Mims III and I still am confused with schematics. For example, in this circuit (first picture) why does Vout connect to the circuit before the photo-diode gets its reading? Finally, in the next picture the LEDs are hooked up before the resistors? How can this be if the resistors are needed to limit the current?
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Offline billhowl

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Re: Circuit Schematic Antics
« Reply #1 on: August 17, 2010, 09:19:33 AM »
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Offline SlotheryTopic starter

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Re: Circuit Schematic Antics
« Reply #2 on: August 17, 2010, 11:32:39 AM »
I'm not concerned with the individual components more with the flow of electricity. Thanks though!
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Offline Razor Concepts

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Re: Circuit Schematic Antics
« Reply #3 on: August 17, 2010, 04:45:39 PM »
Electrons flow from negative to positive.

That doesnt matter anyways, the leds would work either way, before or after resistors. You cant look at a circuit component by component, you must look at the entire loop. Either way, the resistor limits the current, and the LED uses the rest.
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