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Groups > alt.comp.hardware.pc-homebuilt > #43917
| From | Paul <nospam@needed.invalid> |
|---|---|
| Newsgroups | alt.comp.hardware.pc-homebuilt, alt.comp.os.windows-10, sci.electronics.repair |
| Subject | Re: How do I find a power adapter spec for an old Hyundai laptop? |
| Date | 2025-05-03 21:12 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <vv6ete$pgjn$1@dont-email.me> (permalink) |
| References | <vv0f2b$28spf$1@paganini.bofh.team> <vv17e6$3u7u9$1@dont-email.me> <vv6156$2rkhq$1@paganini.bofh.team> <vv63t6$fts8$1@dont-email.me> <vv666t$i3gn$1@dont-email.me> |
Cross-posted to 3 groups.
On Sat, 5/3/2025 6:43 PM, Ivano Rossi wrote: > On Sat, 3 May 2025 17:04:01 -0500, Paul in Houston TX wrote: > >>>> Google: Hyundai laptop power supply >>>> >>>> 12V, 2A >>> >>> That will only work if the company makes only one laptop power supply. >>> Does it? >> >> IDK. However, if you search the internet, including the Hyundai >> website, you will only find the 12V, 2A or 3A models. > > Isn't 12 volts far too low for any modern laptop power supply? > Aren't they usually around 20 volts? > They have to be high enough to charge the battery pack cheaply. Like, with a buck converter. A battery pack running between 14.4V and 16.8V, could likely be charged from a 19V source. That might work. A battery pack operating at 7.2V to 8.4V could be operated from a 12V source. You would just put more chains in parallel (like a 2S3P or a 2S4P pack) to get more watt-hours to compensate for the lower voltage. Equalizing the charge might be more of a problem. A disadvantage of doing this, is the SMPS for VCore is likely less efficient. A higher voltage would work a bit better. I would guess the engineer looked at the BOM cost, and made that the number one priority. The 12V 2A adapter is a common item for external 3.5" HDD enclosures. They have a spec like that, with an unstated spec of allowing a bit more current for a few seconds, without the current limiter cutting out. The HDD adapters aren't exactly 12V @ 2A, cutting out at 2.000 A. They should be able to deliver a bit more current, on demand. This adapter won't have an opportunity to demonstrate that, but the design may just be a HDD wall adapter with a slightly different skin. Paul
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How do I find a power adapter spec for an old Hyundai laptop? Umberto <canaliumberto@impresatrecolli.com> - 2025-05-01 13:38 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul in Houston TX <Paul@Houston.Texas> - 2025-05-01 20:33 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? Randy Jones <randolphJones@randyjones.com> - 2025-05-03 23:17 +0200
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul in Houston TX <Paul@Houston.Texas> - 2025-05-03 17:04 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? Ivano Rossi <Ivano.Rossi@nospam.tin.it> - 2025-05-04 00:43 +0200
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-03 21:12 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul in Houston TX <Paul@Houston.Texas> - 2025-05-04 00:31 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? Mark Lloyd <not.email@all.invalid> - 2025-05-04 18:14 +0000
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-04 14:51 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Umberto <canaliumberto@impresatrecolli.com> - 2025-05-07 01:35 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? knuttle <keith_nuttle@yahoo.com> - 2025-05-07 07:33 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-07 15:16 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Uncle Bob <uncle.bob@nospam.net> - 2025-05-07 18:07 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? knuttle <keith_nuttle@yahoo.com> - 2025-05-07 19:55 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? david <this@is.invalid> - 2025-05-08 05:27 -0600
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-07 21:58 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Larry Wolff <larrywolff@larrywolff.net> - 2025-05-08 07:21 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-08 09:08 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Theo <theom+news@chiark.greenend.org.uk> - 2025-05-08 11:06 +0100
Re: How do I find a power adapter spec for an old Hyundai laptop? Peter <confused@nospam.net> - 2025-05-08 12:15 +0100
Re: How do I find a power adapter spec for an old Hyundai laptop? Theo <theom+news@chiark.greenend.org.uk> - 2025-05-08 12:42 +0100
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-08 09:18 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul in Houston TX <Paul@Houston.Texas> - 2025-05-07 22:08 -0500
Re: How do I find a power adapter spec for an old Hyundai laptop? micky <NONONOmisc07@fmguy.com> - 2025-05-08 01:13 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-08 08:28 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? micky <NONONOmisc07@fmguy.com> - 2025-05-08 01:10 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-08 09:42 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Theo <theom+news@chiark.greenend.org.uk> - 2025-05-11 08:33 +0100
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-01 21:37 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Frank Slootweg <this@ddress.is.invalid> - 2025-05-03 12:33 +0000
Re: How do I find a power adapter spec for an old Hyundai laptop? "...winston" <winstonmvp@gmail.com> - 2025-05-01 23:52 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? micky <NONONOmisc07@fmguy.com> - 2025-05-02 01:56 -0400
Re: How do I find a power adapter spec for an old Hyundai laptop? Paul <nospam@needed.invalid> - 2025-05-02 13:57 -0400
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