Re: How does this circuit keep a constant 20ma going to the LED

John Fields wrote:

Sure, but why not get rid of the resistors altogether and feed the
blinker from a constant current source, like this:

Version 4
*** 1 880 708
WIRE -928 -144 -1088 -144
WIRE -640 -144 -928 -144
WIRE -496 -144 -640 -144
WIRE -160 -144 -496 -144
WIRE -16 -144 -160 -144
WIRE -640 -96 -640 -144
WIRE -496 -96 -496 -144
WIRE -160 -96 -160 -144
. . .

What program can I use to import those text instructions? I am using the free ware version of Eagle to create schematics, and I can't see how or if it supports a file with that format.


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Chris W
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