AC Adaptor

Christopher Paradies (paradies@epfl.ch)
Mon, 25 Nov 1996 08:56:40 +0100

Hi Jake,
I can answer some of your questions.

--- begin forwarded text

>How will a 3VDC 200mA AC adaptor work with the OmniGo 100?
Others have said that the more amps the better. 200mA might be a bit on the
low side. You must also
concern yourself with the fluctuations in voltage/current that are common
with some adaptors.

> How will my14.4 (wich I decided to keep) work with this (700mW)?
>What is the difference between mW and mA? (mini Amps, Mini Wats???)
>How many mW =1mA?

The formula is very straightforward. Watts = Volts * Amperes. mA = 1Ampere
divided by 1000. Likewise, mW = 1 Watt / 1000. Therefore, mW = Volts * mA.
For example, the OGO uses 3 Volts circuits.
Therefore 3 Volts * 200 mA = 600 mW. Clearly, your 200 mA power supply will
not be sufficient
to run a modem that sucks 700 mW of juice.

ciao,
Chris

Christopher Paradies, Ph.D.
internet: paradies@epfl.ch
member: TMS, Sigma Xi
address: EPFL, LMPH, DMX-G 333, CH-1015 Lausanne, Switzerland