115/230V voltage switch key for transformer?
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From: Joerg on 27 Nov 2009 17:35 Baron wrote: > Joerg wrote: > >> Baron wrote: >>> Joerg wrote: >>> >>>> Baron wrote: >>>>> Joerg wrote: >>>>> >>>>>> petrus bitbyter wrote: >>>>>>> <osr(a)uakron.edu> schreef in bericht >>>>>>> > news:f664eb19-4b19-4565-b198-87d60393c2a8(a)j19g2000yqk.googlegroups.com... >>>>>>> On Nov 24, 8:48 pm, Joerg <inva...(a)invalid.invalid> wrote: >>>>>>>> Hello Folks, >>>>>>>> >>>>>>>> Never needed this before but now I do: What are those things >>>>>>>> called that you unplug and insert 180 degrees rotated to switch >>>>>>>> the primaries of a transformer between 115V operation (parallel) >>>>>>>> and 230V operation (series)? Circuit board mount. >>>>>>>> >>>>>>>> Or better yet, does anyone know a source? Must be super cheap, >>>>>>>> as in <<50c altogether in qties, as usual :-) >>>>>>>> >>>>>>>> Under categories such as "voltage selector" I only found fuse >>>>>>>> holders with this feature in there, really expensive plus way >>>>>>>> too large. I want to avoid a slide switch because someone could >>>>>>>> accidentally hit it and ... *PHUT* >>>>>>>> >>>>>>>> -- >>>>>>>> Regards, Joerg >>>>>>>> >>>>>>>> http://www.analogconsultants.com/ >>>>>>>> >>>>>>>> "gmail" domain blocked because of excessive spam. >>>>>>>> Use another domain or send PM. >>>>>>> | The classic term used in Marshall and other Audio Amps is >>>>>>> | voltage selector plug. >>>>>>> | >>>>>>> | Somebody decided they should be removed from the electrical >>>>>>> | code. Your left with the voltage selecting fuseholders. try >>>>>>> | schurter. >>>>>>> | >>>>>>> | Steve >>>>>>> | >>>>>>> >>>>>>> FAIK that old method does not meet current EU safety regulations >>>>>>> anymore. So that selectors became obsolete. >>>>>>> >>>>>>> Why a slide switch will not do? You can find voltage selector >>>>>>> slide switches in which the slider is burried so deeply it can >>>>>>> only be operated by a small screwdriver or something like that. >>>>>>> Sliding it accidentaly seems next to impossible. >>>>>>> >>>>>> Not that easy anymore. Slide switches often don't have the >>>>>> respective agency ratings and since they are primary side they >>>>>> must. Also, it is very hard to find any that are rated 260V which >>>>>> is required for countries such as the UK. >>>>> >>>>> Dunno if it helps, I've seen multi pole jumpers used for voltage >>>>> selection where the cap has multiple links in it. >>>>> >>>> Do you remember where or what brand it might have been? >>> >>> Sorry I don't really remember what kit it was in ! >>> >>> I do remember being curious enough to take the cap off to have a look >>> and put it back on the wrong way round, blowing the mains fuse. A >>> 30mm 3amp T type. >>> >>> Imagine 8 jumpers side by side in a single molding. >>> >> That's exactly what I am looking for. But it's like a looking for a >> needle in the hay stack with the chance that someone already took the >> needle away :-) > > Oddly enough I was scrapping an old Packard Bell computer today and > noticed that the ISA modem had a very similar jumper system on it to > select USA/EU standard. > Ok, but that's probably not UL/VDE approved for use on mains circuits since an ISA modem gets its power from the bus. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Baron on 28 Nov 2009 17:24 Joerg wrote: > Baron wrote: >> Joerg wrote: >> >>> Baron wrote: >>>> Joerg wrote: >>>> >>>>> Baron wrote: >>>>>> Joerg wrote: >>>>>> >>>>>>> petrus bitbyter wrote: >>>>>>>> <osr(a)uakron.edu> schreef in bericht >>>>>>>> >> news:f664eb19-4b19-4565-b198-87d60393c2a8(a)j19g2000yqk.googlegroups.com... >>>>>>>> On Nov 24, 8:48 pm, Joerg <inva...(a)invalid.invalid> wrote: >>>>>>>>> Hello Folks, >>>>>>>>> >>>>>>>>> Never needed this before but now I do: What are those things >>>>>>>>> called that you unplug and insert 180 degrees rotated to >>>>>>>>> switch the primaries of a transformer between 115V operation >>>>>>>>> (parallel) and 230V operation (series)? Circuit board mount. >>>>>>>>> >>>>>>>>> Or better yet, does anyone know a source? Must be super cheap, >>>>>>>>> as in <<50c altogether in qties, as usual :-) >>>>>>>>> >>>>>>>>> Under categories such as "voltage selector" I only found fuse >>>>>>>>> holders with this feature in there, really expensive plus way >>>>>>>>> too large. I want to avoid a slide switch because someone >>>>>>>>> could accidentally hit it and ... *PHUT* >>>>>>>>> >>>>>>>>> -- >>>>>>>>> Regards, Joerg >>>>>>>>> >>>>>>>>> http://www.analogconsultants.com/ >>>>>>>>> >>>>>>>>> "gmail" domain blocked because of excessive spam. >>>>>>>>> Use another domain or send PM. >>>>>>>> | The classic term used in Marshall and other Audio Amps is >>>>>>>> | voltage selector plug. >>>>>>>> | >>>>>>>> | Somebody decided they should be removed from the electrical >>>>>>>> | code. Your left with the voltage selecting fuseholders. try >>>>>>>> | schurter. >>>>>>>> | >>>>>>>> | Steve >>>>>>>> | >>>>>>>> >>>>>>>> FAIK that old method does not meet current EU safety >>>>>>>> regulations anymore. So that selectors became obsolete. >>>>>>>> >>>>>>>> Why a slide switch will not do? You can find voltage selector >>>>>>>> slide switches in which the slider is burried so deeply it can >>>>>>>> only be operated by a small screwdriver or something like that. >>>>>>>> Sliding it accidentaly seems next to impossible. >>>>>>>> >>>>>>> Not that easy anymore. Slide switches often don't have the >>>>>>> respective agency ratings and since they are primary side they >>>>>>> must. Also, it is very hard to find any that are rated 260V >>>>>>> which is required for countries such as the UK. >>>>>> >>>>>> Dunno if it helps, I've seen multi pole jumpers used for voltage >>>>>> selection where the cap has multiple links in it. >>>>>> >>>>> Do you remember where or what brand it might have been? >>>> >>>> Sorry I don't really remember what kit it was in ! >>>> >>>> I do remember being curious enough to take the cap off to have a >>>> look >>>> and put it back on the wrong way round, blowing the mains fuse. A >>>> 30mm 3amp T type. >>>> >>>> Imagine 8 jumpers side by side in a single molding. >>>> >>> That's exactly what I am looking for. But it's like a looking for a >>> needle in the hay stack with the chance that someone already took >>> the needle away :-) >> >> Oddly enough I was scrapping an old Packard Bell computer today and >> noticed that the ISA modem had a very similar jumper system on it to >> select USA/EU standard. >> > > Ok, but that's probably not UL/VDE approved for use on mains circuits > since an ISA modem gets its power from the bus. I agree its probably not. It just happens to use a very similar device. -- Best Regards: Baron.
From: Joerg on 28 Nov 2009 17:27
Baron wrote: > Joerg wrote: > >> Baron wrote: >>> Joerg wrote: >>> >>>> Baron wrote: >>>>> Joerg wrote: >>>>> >>>>>> Baron wrote: >>>>>>> Joerg wrote: >>>>>>> >>>>>>>> petrus bitbyter wrote: >>>>>>>>> <osr(a)uakron.edu> schreef in bericht >>>>>>>>> > news:f664eb19-4b19-4565-b198-87d60393c2a8(a)j19g2000yqk.googlegroups.com... >>>>>>>>> On Nov 24, 8:48 pm, Joerg <inva...(a)invalid.invalid> wrote: >>>>>>>>>> Hello Folks, >>>>>>>>>> >>>>>>>>>> Never needed this before but now I do: What are those things >>>>>>>>>> called that you unplug and insert 180 degrees rotated to >>>>>>>>>> switch the primaries of a transformer between 115V operation >>>>>>>>>> (parallel) and 230V operation (series)? Circuit board mount. >>>>>>>>>> >>>>>>>>>> Or better yet, does anyone know a source? Must be super cheap, >>>>>>>>>> as in <<50c altogether in qties, as usual :-) >>>>>>>>>> >>>>>>>>>> Under categories such as "voltage selector" I only found fuse >>>>>>>>>> holders with this feature in there, really expensive plus way >>>>>>>>>> too large. I want to avoid a slide switch because someone >>>>>>>>>> could accidentally hit it and ... *PHUT* >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> Regards, Joerg >>>>>>>>>> >>>>>>>>>> http://www.analogconsultants.com/ >>>>>>>>>> >>>>>>>>>> "gmail" domain blocked because of excessive spam. >>>>>>>>>> Use another domain or send PM. >>>>>>>>> | The classic term used in Marshall and other Audio Amps is >>>>>>>>> | voltage selector plug. >>>>>>>>> | >>>>>>>>> | Somebody decided they should be removed from the electrical >>>>>>>>> | code. Your left with the voltage selecting fuseholders. try >>>>>>>>> | schurter. >>>>>>>>> | >>>>>>>>> | Steve >>>>>>>>> | >>>>>>>>> >>>>>>>>> FAIK that old method does not meet current EU safety >>>>>>>>> regulations anymore. So that selectors became obsolete. >>>>>>>>> >>>>>>>>> Why a slide switch will not do? You can find voltage selector >>>>>>>>> slide switches in which the slider is burried so deeply it can >>>>>>>>> only be operated by a small screwdriver or something like that. >>>>>>>>> Sliding it accidentaly seems next to impossible. >>>>>>>>> >>>>>>>> Not that easy anymore. Slide switches often don't have the >>>>>>>> respective agency ratings and since they are primary side they >>>>>>>> must. Also, it is very hard to find any that are rated 260V >>>>>>>> which is required for countries such as the UK. >>>>>>> >>>>>>> Dunno if it helps, I've seen multi pole jumpers used for voltage >>>>>>> selection where the cap has multiple links in it. >>>>>>> >>>>>> Do you remember where or what brand it might have been? >>>>> >>>>> Sorry I don't really remember what kit it was in ! >>>>> >>>>> I do remember being curious enough to take the cap off to have a >>>>> look >>>>> and put it back on the wrong way round, blowing the mains fuse. A >>>>> 30mm 3amp T type. >>>>> >>>>> Imagine 8 jumpers side by side in a single molding. >>>>> >>>> That's exactly what I am looking for. But it's like a looking for a >>>> needle in the hay stack with the chance that someone already took >>>> the needle away :-) >>> Oddly enough I was scrapping an old Packard Bell computer today and >>> noticed that the ISA modem had a very similar jumper system on it to >>> select USA/EU standard. >>> >> Ok, but that's probably not UL/VDE approved for use on mains circuits >> since an ISA modem gets its power from the bus. > > I agree its probably not. It just happens to use a very similar device. > This is the main issue. Sure, we could have Molex jumpers made but that sort of stuff raises hackles at the agency compliance testing lab. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |