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And a Stanley Electric that's probably just as old - all from the early 80s.

These are indicators, not illuminators, and the camera makes them brighter than they are. Ma Bell made her stuff however she wanted, and didn't give one little shit about your standards.

And a Stanley Electric that's probably just as old - all from the early 80s. These are indicators, not illuminators, and the camera makes them brighter than they are. Ma Bell made her stuff however she wanted, and didn't give one little shit about your standards.
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[–] • 1 pt

Not sure. I want to do a quick short on them, will let you know.

[–] • 1 pt

No worries, I'm just curious on how they compare with today's LED.

[–] • 2 pts

Quick test.

510Ω in series with each, and they all have about a 3.3V drop on the resistor, so ~6.5mA is flowing in each leg of the circuit.

I'm probably starving them a bit, but the fact that they can light full at 6mA is interesting.

[–] • 1 pt

That's pretty cool.

Looks like they have a checkerboard like pattern on the lens/cap.

[–] • 1 pt

Sure. I'll let you know, I need to set up the camera and do it but I'm being lazy today.