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Re: Power consumption of Apple II with Monitor?

On 4/13/2011 10:30 PM, rich12345 wrote:

On Apr 13, 6:20 pm, Charlie<charlieD...@verEYEzon.net>  wrote:

Sure.  Without the monitor:

34 watts on power-up
29 watts after a second or two while the drive boots
24 watts with no drive running



but Michael J. Mahon wrote earlier:


When I constructed my AppleCrate II, I measured the average power
consumption of an Apple //e main board (no cards) at about 4.2 Watts.


you're measuring 20 more watts that Michaels setup with no cards.

24 - 7 (for system saver)

17 watts...  You mention that you have duodisk and serial card.  Do
these two cards take this much power?
Maybe Michael J. Mahon was measuring the power consumed by the board at the output of the power supply. I'm measuring is at the line side. The power supply efficiency could be low. If we say 50% (just a guess) then 17 watts / 2 = 8.5 watts. Still higher than Michael gets but did he have a keyboard attached? I also failed to mention I have a standard 64K card in the AUX slot which I consider normal. I don't know if Michael had a card in the AUX slot. He said (no cards). 

Charlie