Re: Anyone familiar with this? October 26, 2015 11:32AM |
Registered: 9 years ago Posts: 65 |
Re: Anyone familiar with this? October 26, 2015 12:07PM |
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Re: Anyone familiar with this? October 26, 2015 02:11PM |
Registered: 9 years ago Posts: 65 |
HERE, top of page 8.Quote
sungod3k
where do you find the 16mA and 24mA trigger range?
I'm not a big fan of adding the 'indicating" LED in series. Electrically its fine but adds a little more unknown. A google search shows that forward voltage drop of a typical red LED can range from 1.8V to 3.3V. If you still use the 560Ω resistor this could result in a drive current between 13mA and 16mA. A 390Ω resistor would give a range between 19mA and 23mA if you go that route. You could always put the 560Ω in and measure the voltage across it and work the math backwards to get a more precise value.Quote
sungod3k
ok the 1k resistor felt funny so ill keep the 560 but put the led in series
Re: Anyone familiar with this? October 26, 2015 03:21PM |
Registered: 11 years ago Posts: 805 |
Re: Anyone familiar with this? October 26, 2015 03:55PM |
Registered: 9 years ago Posts: 65 |
Re: Anyone familiar with this? October 27, 2015 11:27PM |
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Re: Anyone familiar with this? November 03, 2015 05:50PM |
Registered: 9 years ago Posts: 705 |