Re: [BVARC] Old 150watt DC to AC converter.
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 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 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 On Behalf Of John Denison via BVARC Sent: Tuesday, May 14, 2024 8:31 PM To: bvarc@bvarc.org Cc: John Denison 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 Brazos Valley Amateur Radio Club BVARC mailing listBVARC@bvarc.orghttp://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.orgPublicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ -- Gokhan KORALTURK Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mail
Re: [BVARC] Old 150watt DC to AC converter.
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 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 *On Behalf Of *John Denison via > BVARC > *Sent:* Tuesday, May 14, 2024 8:31 PM > *To:* bvarc@bvarc.org > *Cc:* John Denison > *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. > > > > [image: Inline image] > > > > Thanks > > > > Rudy Ackerman > > KF5QYG > > > > > > Brazos Valley Amateur Radio Club > > > > BVARC mailing list > > BVARC@bvarc.org > > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > Publicly available archives are available here: > https://www.mail-archive.com/bvarc@bvarc.org/ > > > > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/bvarc@bvarc.org/ > -- Gokhan KORALTURK Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/
Re: [BVARC] Old 150watt DC to AC converter.
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 On Behalf Of John Denison via BVARC Sent: Tuesday, May 14, 2024 8:31 PM To: bvarc@bvarc.org Cc: John Denison 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 Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org <mailto:BVARC@bvarc.org> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/
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. Inline image Thanks Rudy Ackerman KF5QYG Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here:https://www.mail-archive.com/bvarc@bvarc.org/ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/
