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Groups > alt.comp.os.windows-10 > #184349
| 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 | 2025-05-08 09:08 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <vviacg$1qdt0$1@dont-email.me> (permalink) |
| References | (7 earlier) <vverfe$3td2g$1@paganini.bofh.team> <vvgbi2$16qep$1@dont-email.me> <vvglj2$9lt$1@paganini.bofh.team> <vvh33u$1g1d8$1@dont-email.me> <1c56e76a52fa8fe792dc99b3e3fcf55641ddb4c6@novabbs.org> |
Cross-posted to 3 groups.
On Thu, 5/8/2025 7:21 AM, Larry Wolff wrote: > > Why is a step down DC to lower DC converter called a buck converter? > Shouldn't it be called a variable duty cycle converter instead? > I s'pose the name contrasts better with that of a boost converter. > There are three types, buck, boost, and buck-boost :-) The buck-boost is the most complicated. If you have a five volt input device, and the output is variable and knob adjustable, then to make six volts on output it runs in boost mode, and to make four volts it runs in buck mode. Someone at work commissioned someone outside the company to build us a buck-boost on a PCB and the circuit was huge in terms of component count. In principle, you could do a boost first, followed by a buck, and get a dial-adjustable voltage. But that's two conversions, and the boost might only be 80% efficient, and the circuit is going to get warm if you do it that way. A fully integrated buck-boost changes modes, so there is only ever one conversion going on at a time. Buck is pretty efficient, or at least, it's easier to optimize. ******* And thank goodness, there's a Wiki for this. As a bonus, it even covers some of the methods used in LED lighting (SEPIC and CUK, at least according to one article). https://en.wikipedia.org/wiki/Buck%E2%80%93boost_converter 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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