If you love LEDs on computers I'm sure you wanted one of these. - Page 2 - Electronic Circuits Projects Diagrams Free

audioguru · 29th August 2007, 12:56 AM

Quote:

Originally Posted by blueroomelectronics

I have a 30W supply but I need 600W how do I build an adapter.

Some people think that an amplifier can boost a 30W supply to an output of 600W.
I think it would take a miracle to do that.

blueroomelectronics · 29th August 2007, 01:46 AM

Quote:

Originally Posted by ThermalRunaway

What do all those switches do?!?!

Brian

Brace yourself, that's how you programmed it.

things · 29th August 2007, 01:47 AM

its a built in keyboard

or should i say switchboard?

ericgibbs · 29th August 2007, 07:21 AM

Quote:

Originally Posted by Nigel Goodwin

It was commonplace all over Europe - bit before my time though!

hi,
Even back then the UK was at the "cutting edge of technology"

Eric

So as not to cause any confusion about the above statement,
"cutting edge of technology",
means the sharpening of cutting tools.

Hero999 · 31st August 2007, 09:25 PM

Quote:

Originally Posted by audioguru

Hi Eric,
LEDs use a lot of power.
A little PP3 9V alkaline battery has a very low amount of power and can light a single LED at 27mA for only about 32 hours, dimming all the time. After only 6 hours the 9V battery voltage is only 7V. After 20 hours the voltage is 6.2V and at 32 hours the voltage is 4V.

One year has 8760 hours. A little PP3 alkaline battery can supply only 0.1mA for one year.
An LED hex display with an average of 12 segments lighted at 10mA each uses 120mA.

Use an LCD display. It uses a very low amount of power if it is not lighted.

Of course it's perfectly possible, he didn't say how big the 9V battery is or how many rooms in is house he has spare to cram with batteries.

Sceadwian · 1st September 2007, 01:14 AM

It seems kind of tacky to put a modern PC behind the facade of an Altair. The question is is does the front panel actually work? Perhaps linked to a virtual machine on the PC? =)

blueroomelectronics · 1st September 2007, 02:36 AM

Quote:

Originally Posted by Sceadwian

It seems kind of tacky to put a modern PC behind the facade of an Altair. The question is is does the front panel actually work? Perhaps linked to a virtual machine on the PC? =)

Not tacky; Retro! It's got 256bytes (yep 1/4K) memory and an 8008 simulator (runs on a ATMEL chip)

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29th August 2007, 01:47 AM	(permalink)
things	its a built in keyboard or should i say switchboard? __________________ The 3 laws of science.... 1. If it smells bad, It's chemistry. 2. If it's mushy, It's biology. 3. If it doesn't work, It's physics. www.laserpointerforums.com A forum for disscusion of lasers and laser shows! www.laserchat.org IRC chat for laser and electronic related stuff.

1st September 2007, 01:14 AM	(permalink)
Sceadwian	It seems kind of tacky to put a modern PC behind the facade of an Altair. The question is is does the front panel actually work? Perhaps linked to a virtual machine on the PC? =) __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."