Quote:
Originally Posted by alistairsam
eg, if a 2000mfd cap is connected in parallel to a 12v dc supply at the output, it will raise voltage slightly by 1 or 2 volts.
one option would be to try powering the laptop from the battery directly with sufficient caps in parallel, ensuring the voltage is close to 15v. this would eliminate the inverter and reduce losses as inverters have losses. just an idea.
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Thanks for the suggestion and the detailed response. The inverter is a
Powertech can sized inverter (MI-5121):- Output Power (Continuous): 150W
- Surge Output Power (Surge): 450W
I used to use a simple dc voltage converter designed to run laptops off a 12 volt battery. This worked for years when the laptop battery still had some life in it in the previous laptop. But the shutdowns began when the battery died. That's when I switched to the Libretto and the inverter. This seemed to resolve things in the workshop - but not when I was out in the cold observing.
I like your suggestion re the capacitors in parallel. It would simplify my equipment. Would this give a small reserve of power too? Can you give me specifications on the capacitors I need to try it - I'm guessing 2 to 3 2000mfd caps
? I can make things up OK but I don't understand the theory very well.
Rod.