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  • #: 227823
  • Price: $0.99 In Apple Store
  • Category: Utilities
  • Updated: 2009-10-15
  • Current Version: 1.1
  • 1.1
  • Size: 0.20 MB
  • Language: English
  • Seller: Sandi Rolih
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later
  • © 2009 Sandi Rolih
  •  Add to Favorite apps



Imagine that you are working on your newest project and have a bunch of LEDs on your table. You need to wire those LEDs to a power source and you don't know what resistor to use, and you don't want to use long equations to find that out. Or….. Read more

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Rated 3/5 based on 1 customer reviews.


3/5 stars
Somewhat correct

The help window says LEDs are typically 2v while they are actually normally 3v. Also when you calculate the need for a resistor if you have something for example like this 9v power supply and three 3v LEDs 20ma in a series it says you need no resistor which it will work without one but it is better to add a 1OHM resistor just to make shire the power won't peak and damage LEDs. That's all I found wrong so far and I will rewiew again if nessicary.

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