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I think the one on the monty is a nkk iluminated pushbutton |
Yes, the KB series. But, that's a custom-machined aluminum cap on there.
The switches look like this with the factory lenses:
One's the white lens, the other is the blue. Neither LED is operating.
Also, the LED in these switches is a separate circuit -- it doesn't automatically light up when you turn the switch on. If you are building a PPA, for instance, you'd run wires from the switch's LED lugs to the LED pads on the amp board, and use the amp board's current-limiting circuitry.
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The blue one is basically impossible to find last time I checked. |
I didn't have any particular problem finding the lenses in the picture above. I'm pretty sure I got everything from Mouser. If you mean the LED itself, you don't need to use NKK's LEDs. You can jigger regular T1 LEDs to work in the switch.
(Incidentally, the reason I used two different lens colors was because that amp was an experiment. I wanted to see a blue LED under both the blue and white lenses, to see which I preferred. I think I actually like the blue-under-white, so even if the blue lens is harder to find, it's not a big deal, to me. I'm not using NKK LEDs.)
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IIRC the bulgin needs a whole relay circuit to operate however the nkk does not.... |
Relays are one way to go, but probably a little heavy-handed. See below.
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Need to find some digital circuitry to run the thing though |
I don't know about "digital", but how about a mechanically-triggered flip-flop:
http://edn.com/contents/images/102804di.pdf
If you want something simpler, the first circuit in this article should work, since the more complicated circuit the rest of the article describes probably is only necessary when running the latch signal from the output of a DC-DC converter as shown in the first schematic:
http://edn.com/contents/images/112300di.pdf
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the Bulgin...doesn’t come cheap, at nearly $20 each |
The NKK KBs are in that same range as well, after you add all the accessories in.