Re: Apple ][ "power light" specs

[Rubywand <rubywand@swbell.net>]

Perry Dueck writes ...
> 
> In article <33F75E19.604F@swbell.net>, Rubywand <rubywand@swbell.net> wrote:
>>      According to the GS schematic, you're looking for an LED. Probably, you
want something like a 100-200 mcd brightness, 2-3V, green LED with a 40 degree 
viewing angle that will match the original in size/shape. A local
electronic parts supplier should stock high-brightness green LED's. They are
available via mail order from Digi-Key and Mouser.
<<

> 
> Ahhhh.....but we're not talking about a GS, I'm talking about an Apple ][
> (from 1977). I took the light out from underneath the "fake" keycap (which
> is a light cover, but looks like a real keycap with a white crown). The
> light's glass is clear. I took it to Radio Shack, and they didn't know
> what voltage is was so they said they couldn't help me. I am sure that
> they have a proper replacement for it, I saw a bunch of different little
> lights that they sell which look like the one that was in my Apple
> ][....unfortunately, they come in different voltage levels, and different
> "mA" numbers.
> ....

     As D. Peschel guessed, I zeroed-in on the "Woz" in your original question 
and began thinking in terms of the GS. In an old ][, your best direct 
replacement will be a 5V mini-bulb rated at 40-60 mA. A low-current 6V bulb is 
okay-- it should last a bit longer but will, probably, not be as bright. 

     Today, most ON indicators are LED's. If you do not mind a bit of extra 
bother, you could fit a high-brightess LED in series with a small 75-100 Ohm 
resistor into the key cap space. LED's are, generally, cheaper than bulbs, use 
less current, run cooler, last much longer, and come in colors!


Rubywand