Help, need to reducing DC output


Old 06-01-11, 02:29 AM
Thread Starter
Join Date: Jun 2011
Location: Nigeria
Posts: 1
Help, need to reducing DC output

I have a DC 30v 0.4A battery back for my printer, but now i want to use it with my Access point which uses 12v 1A. The battery pack actually has two DC outlets,
1st outlets = 19v 3.5A for Laptops
2nd outlet = 30-33v 0.4A
using only the 1st outlet for my laptop lasts for 15 hours now i want to power my access point (12v 1A) with the 2nd outlet which supplies 30v to 33v 0.4A. i guess i can use a resistor or diode , but i dont know the types and combination to use. any assistance would be greatly appreciated. Thank you.
Sponsored Links
Old 06-01-11, 05:16 AM
Join Date: Oct 2008
Location: New England
Posts: 9,990
The resistor and diode will give you the voltage but not the 1A. In theory there is barely the same amount of power, [email protected] 0.4A vs [email protected] 1A, but the circuit to make the transformation would eat up some of that power and be a bit more complicated than just the resistor and diode.

You could possibly double up on the first port with a shorter run time.

Is the the load for the access actually 1A and is it constant?


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes