Yep I have to agree, I'm tossing it and just ordered a new Besttek 300 watt
full sine wave inverter from Amazon. It was about $43.00 and had several
good reviews by the review BOT's on there and you tube
Robert - thanks for the suggestion for the 12 to 19v adapter made by Tarrus,
But i decided on a new invert as I could use it for other things as well.
Thanks for every one else that replied.
Rudy Ackerman KF5QYG
On Wednesday, May 15, 2024 at 12:27:10 AM CDT, Gokhan KORALTURK via BVARC
<[email protected]> wrote:
More than likely using a 105W inverter for 130W actual power demand would not
be very healthy neither for your inverter nor for the device. When they say
it's a 150W inverter, they usually emit the fact that it would not be able to
deliver that much power with the same quality since wave (or simulated sine
wave) for that power output for long. On the other hand, the same goes for your
laptop charger. If if is 130 Watts it is very very unlikely it would be
outputting, in fact even consuming that much power. So it's a coin toss unless
you measure the actual values or can find some real life measurements on the
web.
All these aside, modern switching power supplies are really and I mean really
good at what they do. So they will compensate for a lot of variables on the
input side and will still be able to produce 19V 6.8A (which I assume are the
rough values for your adapter based on "130 Watt" rating). The worst case
scenario I can imagine is either your inverter getting too hot and shutting
itself (or the very unlikely scenario burning itself out) or your adapter
getting a bit hot and turning itself off after a while.
If you can find an oscilloscope, even a very cheap one, you can actually see
the power output of the inverter off and on load. That would give you the best
idea. If not, just plug them together, and instead of maybe using your PC, try
another load (a DC soldering iron, a variable load tester, a giant resistor, an
old laptop etc. And see how long it would work without any issues. Chances are
they would work just fine. You can also use an RMS multimeter to see what it
does to an extent if you cannot find an oscilloscope.
But my final recommendation is this, a cheap modern 200W inverter can be bought
for about $20. Is it worth going through all that trouble just to make sure
your 15 year old inverter would not harm your PC?
I wish I had some time to help you on site to bring an oscilloscope and test it
but seriously, I'd just get a new one and use the old one for something that is
not sensitive.
Thank you and best regards,
73,KGOKHN
On Tue, May 14, 2024 at 11:12 PM Robert Polinski via BVARC <[email protected]>
wrote:
I have a 12 to 19v adapter made by Tarrus that allows me to plug my Dell laptop
into a 12v power. It is more efficient than going to 120vac It was not very
expensive . Look at amazon Need to know what power your laptop uses They range
from USB-C to (like mine) 19v Robert
From: BVARC <[email protected]> On Behalf Of John Denison via BVARC
Sent: Tuesday, May 14, 2024 8:31 PM
To: [email protected]
Cc: John Denison <[email protected]>
Subject: Re: [BVARC] Old 150watt DC to AC converter.
I used a UPS that had a modified sine wave inverter and it made my laptop
charger run excessively hot. That was one time during a Field Day event, so I
don't know if it would have shortened the life of the charger. Currently I am
using a pure sine wave inverter made by Samlex and the laptop charger plugged
into that inverter feels like room temperature.
73
John Denison
KD5YOU
On 5/14/2024 8:21 PM, Rudolph Ackerman via BVARC wrote:
I found a old 150watt DC to AC converter. It's a good 10 to 15 years old and
has never been used.
Looking to use it to power the AC adapter/charger for my laptop. IT's rated
for 130watts.
I'm guessing it's a modified sinewave inverter due to the age. Will this
thing harm my laptop/charger.
Thanks
Rudy Ackerman
KF5QYG
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