nuckolls.bob(at)aeroelect
Guest
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 Posted: Thu Apr 05, 2012 5:58 am Post subject: Next generation wig-wag controller for LED lamps |
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At 11:03 PM 4/4/2012, you wrote:
| Quote: |
Bob, thank you for the schematic. I guess this is the part where
the "education" part comes in with my project. The "U" devices
already have my curiosity...
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Good question. Reference designators starting
with "U" are generally integrated circuits.
In this instance, U109 is a CD4093, quad 2-input,
NAND gate with schmidt-trigger inputs.
http://tinyurl.com/ckr5ls9
The schematic for this device gets discorporated
into 4 sections A thru D. But if you check
the pin numbers assigned to the collection
of gates you will find that they all add up to
14 . . . the number of pins on the single
device.
| Quote: | BTW, how does a person see the picture where the Emacs! occurs?
Mike
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You can go to the Matronics server where the
messages are archived.
http://tinyurl.com/864kunv
Select AeroElectric-List and scroll down to
the thread of interest . . in this case:
http://tinyurl.com/7mg3mwk
This would be an excellent project for someone
who wants to stick their toe into the puddle
of electronics technologies. This circuit would
assemble nicely on a piece of Radio Shack
perfboard
http://tinyurl.com/732bwo3
The whole bill of materials is less than
$10.
Bob . . .
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