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Old 12-14-2013, 09:26 PM
rjdekker rjdekker is offline
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Question Activity LED specs

I want to connect an additional LED to the Act terminal on an MPA. What specs should the LED have (forward volt/cur)?

Thanks....Rob
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Old 01-09-2014, 09:08 PM
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John John is offline
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Quote:
Originally Posted by rjdekker View Post
I want to connect an additional LED to the Act terminal on an MPA. What specs should the LED have (forward volt/cur)?

Thanks....Rob
The best place to start is a "standard brightness" LED with Vforward of about 2V, in series with a 1k resistor.

If you want something brighter or drawing more current, I'd limit it to about 15mA so the PIC pin is not overloaded.

The circuit looks like:

(+5V)---/\/\/\---|>|---(ACT pin)
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