New Classic Finds and etc. (Long)

From: Ethan Dicks <>
Date: Mon Jan 26 02:41:37 2004

On Sun, Jan 25, 2004 at 09:15:21PM -0800, Lyos Norezel wrote:
> Doc... this is a BAD idea... I've fried numerous devices by using the wrong power rating... even if it was only 1mA off. The voltage almost never matters... as long as the power is correct. Hope this gets to u before you fry your machine.
> Lyos Gemini Norezel

Woah! Stop right there! The voltage _might_ or _might not_ be critical
depending on the nature of the circuit just to the left of the plug (i.e.,
a 7805 can take a wide range of voltages), but I have seen other devices
blow from being just a volt or two off. Some things work at *only* the
rated voltage.

Amperage is another matter entirely. If the brick offers too much, that's
no problem. The device will draw what it needs. Where you run unto
trouble is when you use a brick that's too small.

If the device wants 800mA and you plug in a brick at the right voltage
but at 500mA, I would say that eventually the brick is going to smoke.
If you give it a 1.2A brick, all will be well.


Ethan Dicks, A-130-S      Current South Pole Weather at 26-Jan-2004 08:30 Z
South Pole Station
PSC 468 Box 400       Temp -19.5 F (-28.6 C)    Windchill    -46.5 F (-43.6 C)
APO AP 96598          Wind     9 kts Grid 065   Barometer 688.8 mb (10297. ft)
Received on Mon Jan 26 2004 - 02:41:37 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:36:47 BST