Hi All It is not quite as simple as saying the ‘increased duty cycle’. In fact due to the higher frequency the iron losses will be less on 60Hz than on 50Hz due to the reduction in Gauss, the flux density, which is inversely proportional to frequency. This is easily proved. Consider the size and weight of a switch power supply where the ‘frequency’ is of the order of thousands of Hz and the transformer is a tiny little thing. So the rule of thumb is if you increase the frequency you reduce the amount of iron. Regards Brian G3OYU PS> I used to design and build transformers for a living many years ago! _____ From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Steve Alcorn Sent: Saturday, 29 October, 2005 11:28 To: vintagesynthrepair@yahoogroups.com Subject: RE: [vintagesynthrepair] Re: Arp Odyssey Power 110/220V? These transformers convert the output voltage, but not the line frequency. For older devices such as analog synths this isn’t a problem. But keep in mind that they run warmer on 60Hz power than 50Hz power, because of the increased duty cycle (even though it seems like the same amount of power is being delivered). So you might want to go with the 200watt model. -----Original Message----- From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@...m]On Behalf Of kar_chicago Sent: Friday, October 28, 2005 10:30 PM To: vintagesynthrepair@yahoogroups.com Subject: [vintagesynthrepair] Re: Arp Odyssey Power 110/220V? Makes sense...i see the Odyssey has power consumption of only 20 watts, so a 45 watt transformer would be great. My JP8 has 90 Watt consumption...so I'm wondering if a 100 watt transformer is sufficient or if I should go with a 200W for extra headroom. --- In vintagesynthrepair@yahoogroups.com, Kyle Reed <kar_chicago@y...> wrote: > > Thanks > > Michael Adler Miltersen <michael@s...> wrote:Hi Kyle. > > I got a converter called MW - and it's 45 Watts. The electronics guy > told me that would be allright. I hope it is - well, it works. > > Michael. > > > On 28/10-2005, at 23.07, Kyle Reed wrote: > > > What brand of converter did you get? What rating - 100 Watts??  > > Thanks. > > > > Michael Adler Miltersen wrote:Hi Steve, and > > everyone else. > >> > >> Thank you so much for the reply's - i treasure this forum. > >> > >> I made a very very easy solution, and bought a 220>110 converter for > >> 20$. It works like a charm. > >> > >> I appreciate the input. You guys has been great. > >> > >> Best, > >> Michael. > >> > >> On 28/10-2005, at 7.17, Steve wrote: > >> > >> > OK, I have my Odyssey apart for cleaning and took the opportunity to > >> > examine the back panel connections to the power supply board. There > >> > are stake-on connectors and even a sticker on the rear panel that > >> > indicates where the wire should be pushed on for 110 or 240 VAC > >> > operation. No tools required. (Except a Philips head screwdriver to > >> > remove the six side screws and eight bottom ones.) This information > >> > applies to the yellow on black Mark II model (2813), but may be the > >> > same for white and orange units, too. > >> > > >> > Steve > >> > > >> > > >> > > >> > --- In vintagesynthrepair@yahoogroups.com, "Steve Alcorn" > >> > wrote: > >> > > > >> > > Michael, > >> > > > >> > > If you trace the wires from the cord through the switch to the > >> > transformer, you will find that they connect to the black and white > >> > leads of the transformer for 110VAC operation. For 220VAC operation > >> > the black and blue leads should be used. (This may be easy, if you > >> > find a jumper between the blue and white lead. Simply remove it.) If > >> > you don't feel comfortable making the change, any electronics repair > >> > place can easily do it if you give them the unit and the schematic. > >> > It's less than a five-minute job. > >> > > > >> > > Steve > >> > > > >> > > -----Original Message----- > >> > > From: vintagesynthrepair@yahoogroups.com > >> > [mailto:vintagesynthrepair@yahoogroups.com]On Behalf Of Michael > >> Adler > >> > Miltersen > >> > > Sent: Tuesday, October 25, 2005 1:17 PM > >> > > To: vintagesynthrepair@yahoogroups.com > >> > > Subject: Re: [vintagesynthrepair] Arp Odyssey Power 110/220V? > >> > > > >> > > Hi again Brian > >> > > > >> > > Ok, I must admit - I know nothing about electronics like that. To > >> > move any wire's around, or anything like that - is just too risky > >> > business for me, when I don't know what I'm doing. > >> > > > >> > > But I appreciate what you're saying. > >> > > > >> > > Best, > >> > > Michael > >> > > > >> > > On 25/10-2005, at 18.57, Brian Davies wrote: > >> > > > >> > > > 0000,0000,8080>I can only suggest that you locate the > >> > mains transformer and see what tappings may be on there. Possibly > >> you > >> > will have to take a soldering iron to > >> > it. > >> > > > 0000,0000,8080> > >> > > >> > > > > >> > 0000,0000,8080>Brian> fontfamily> > >> > > > 0000,0000,8080> > >> > > >> > > > >> > > > > >> > Helvetica>From:> fontfamily>> Helvetica> > >> vintagesynthrepair@yahoogroups.com > >> > [mailto:vintagesynthrepair@yahoogroups.com] > >> > On Behalf Of > >> > Michael Adler > >> > Miltersen > >> > > > > >> > Helvetica>Sent:> fontfamily>> Helvetica> Tuesday, 25 October, 2005 > >> > 17:51 > >> > > > > >> > Helvetica>To:> fontfamily>> Helvetica> > >> > vintagesynthrepair@yahoogroups.com > >> > > > > >> > Helvetica>Subject:> fontfamily>> Helvetica> Re: > >> [vintagesynthrepair] Arp Odyssey Power > >> > 110/220V? > >> > > > >> > > > >> > > Hello again > >> > Brian. > >> > > > >> > > I just opened the Arp, and i > >> > do not see any tap or anything of that kind? Any other > >> > suggetions? > >> > > > >> > > > Helvetica>Best, > >> > > > Helvetica>Michael. > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > On 25/10-2005, at 18.30, > >> > Brian Davies wrote: > >> > > > >> > > > >> > > Hi > >> > Michael > >> > > > >> > > Looking at the power unit > >> > circuit diagram all you need to do is swap the tapping point from > >> 115V > >> > to 230V, note that the whole of Europe now operates on 230V although > >> > if you measure the voltage you will probably find that it is > >> actually > >> > 220V in Denmark, while here in the UK it is 240V as > >> > measured! > >> > > > >> > > Given that the diagram > >> > clearly shows a tapping system on the input transformer you should > >> > find some easy means to adjust the tapping. > >> > > > >> > > > Helvetica>Regards > >> > > > >> > > Brian > >> > G3OYU > >> > > > >> > > > >> > > > Helvetica>From:> Helvetica>vintagesynthrepair@yahoogroups.com > >> > [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of > >> > freeloverdk > >> > > > Helvetica>Sent:> Helvetica>Tuesday, 25 October, 2005 > >> > 16:53 > >> > > > Helvetica>To:> > >> > Helvetica>vintagesynthrepair@yahoogroups.com> fontfamily> > >> > > > > >> > Helvetica>Subject:> param > >> > Helvetica>[vintagesynthrepair] Arp Odyssey Power > >> > 110/220V? > >> > > > >> > > > >> > > Hi > >> > All. > >> > > > >> > > I have a question. I just > >> > received an Arp Odyssey (Whiteface) in the mail today i bought > >> > > >> > > from Canada. I live in > >> > Denmark (Europe) > >> > > > >> > > The wall-plugs here is > >> > different, and we have 220 V in stead of 110 V. I have a > >> > converter > >> > > for the PLUG ONLY, but Do i > >> > also need an external converter to convert my power from > >> > > >> > > 220 to 110 V before i plug > >> > it in? I'm not sure if the Arp adjusts itself? > >> > > > >> > > From this diagram i found, > >> > it looks as if the Arp can tale 115-230 V - but I'm not sure this > >> > > >> > > is right. Can anyone please > >> > help me with this? > >> > > > >> > > > > >> > Helvetica>http://www.physicsenterprises.andrews.edu/ > >> > diy_archive/manuals/arp/odyssey/ody_38.gif > >> > > > >> > > > Helvetica>Best, > >> > > Michael, Copenhagen, > >> > Denmark > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > YAHOO! GROUPS > >> > LINKS > >> > > > >> > > ? Visit your group > >> > "vintagesynthrepair" on the web. > >> > > > >> > > ? To unsubscribe from this > >> > group, send an email to: > >> > > > >> > vintagesynthrepair-unsubscribe@yahoogroups.com > >> > > > >> > > ? Your use of Yahoo! Groups > >> > is subject to the Yahoo! Terms of Service. > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > michael adler > >> > miltersen > >> > > composer · producer · > >> > visualizer > >> > > > >> > > sepia productions / > >> > sepiamusic > >> > > > Helvetica>michael@s... > >> > > vesterbrogade 58, 3. > >> > floor > >> > > dk-1620 > >> > copenhagen > >> > > mobile: +[45] 40 86 86 > >> > 00 > >> > > > >> > > > Helvetica>addvisors > >> > > > Helvetica>mam@a... > >> > > nÃÆ'¸rrebrogade 66D, 3. > >> > sal > >> > > dk-2200 > >> > kÃÆ'¸benhavn > >> > > telefon: 3338 > >> > 1180 > >> > > direkte: 3520 > >> > 1424 > >> > > > >> > > The information in this > >> > e-mail is confidential and > >> > > may be legally privileged. > >> > It is intended solely for the addressee. > >> > > Access to the e-mail by > >> > anyone else is unauthorised. > >> > > If you are not the intended > >> > recipient, any disclosure, > >> > > copying, distribution is > >> > prohibited and may be unlawful. > >> > > > >> > > > >> > > SPONSORED > >> > LINKS > >> > > Electric piano > >> > > Electronic repair > >> > > Sampler > >> > > Korg synthesizer > >> > > Synthesizer > >> > > Moog synthesizer > >> > > > >> > > YAHOO! GROUPS > >> > LINKS > >> > > > >> > > ? Visit your group "> 0000,0000,FFFF>vintagesynthrepair" on the > >> web. > >> > >  > >> > > ? To unsubscribe from this group, send an email to: > >> > > > 0000,0000,FFFF>vintagesynthrepair- unsubscribe@yahoogroups.com > >> > >  > >> > > ? Your use of Yahoo! Groups is subject to the > > >> 0000,0000,FFFF>Yahoo! Terms of Service. > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > > >> > > >> > > smaller>michael > >> > adler miltersen > >> > > > >> > > >> > > smaller>composer > >> > · producer · visualizer > >> > > > >> > > > 6666,6666,6666>sepia productions / > >> > sepiamusic > >> > > > > >> > 0000,0000,EEEE>michael@s...> color> > >> > > > 6666,6666,6666>vesterbrogade 58, 3. > >> > floor > >> > > > 6666,6666,6666>dk-1620 > >> > copenhagen > >> > > > 6666,6666,6666>mobile: +[45] 40 86 86 > >> > 00 > >> > > > >> > > > > >> > 6666,6666,6666>addvisors> tad-smaller> > >> > > > > >> > 6666,6666,6666>mam@a...> tad-smaller> > >> > > > 6666,6666,6666>nÃÆ'¸rrebrogade 66D, 3. > >> > sal > >> > > > 6666,6666,6666>dk-2200 > >> > kÃÆ'¸benhavn > >> > > > 6666,6666,6666>telefon: 3338 > >> > 1180 > >> > > > 6666,6666,6666>direkte: 3520 > >> > 1424 > >> > > > >> > > The > >> > information in this e-mail is confidential and > >> > > >> > > may > >> > be legally privileged. It is intended solely for the addressee. > >> > > >> > > > 6666,6666,6666>Access to the e-mail by anyone else is > >> > unauthorised. > >> > > If > >> > you are not the intended recipient, any disclosure, > >> > > >> > > > 6666,6666,6666>copying, distribution is prohibited and > >> > may be unlawful. > >> > > > >> > > > >> > > >> > > >> > > >> > > >> > > >> > > >> > SPONSORED LINKS > >> > Electric piano > >> > Electronic repair > >> > Sampler > >> > Korg synthesizer > >> > Synthesizer > >> > Moog synthesizer > >> > > >> > YAHOO! GROUPS LINKS > >> > > >> > ââ€"ª  Visit your group "vintagesynthrepair" on the web. > >> >  > >> > ââ€"ª  To unsubscribe from this group, send an email to: > >> >  vintagesynthrepair-unsubscribe@yahoogroups.com > >> >  > >> > ââ€"ª  Your use of Yahoo! Groups is subject to the Yahoo! Terms of > >> > Service. > >> > > >> > > >> > > >> > >> > >> > >> michael adler miltersen > >> composer · producer · visualizer > >> > >> sepia productions / sepiamusic > >> michael@s... > >> vesterbrogade 58, 3. floor > >> dk-1620 copenhagen > >> mobile: +[45] 40 86 86 00 > >> > >> addvisors > >> mam@a... > >> nørrebrogade 66D, 3. sal > >> dk-2200 københavn > >> telefon: 3338 1180 > >> direkte: 3520 1424 > >> > >> The information in this e-mail is confidential and > >> may be legally privileged. It is intended solely for the > >> addressee.  > >> Access to the e-mail by anyone else is unauthorised.  > >> If you are not the intended recipient, any disclosure, > >> copying, distribution is prohibited and may be unlawful. > > Yahoo! FareChase - Search multiple travel sites in one click. > > > > SPONSORED LINKS > > Electric piano > > Sampler > > Synthesizer > > Moog synthesizer > > Electro mechanical > > Electronic repair part > > > > YAHOO! GROUPS LINKS > > > > â–ª  Visit your group "vintagesynthrepair" on the web. > >  > > â–ª  To unsubscribe from this group, send an email to: > >  vintagesynthrepair-unsubscribe@yahoogroups.com > >  > > â–ª  Your use of Yahoo! Groups is subject to the Yahoo! Terms of > > Service. > > > > > > > > > > michael adler miltersen > composer · producer · visualizer > > sepia productions / sepiamusic > michael@s... > vesterbrogade 58, 3. floor > dk-1620 copenhagen > mobile: +[45] 40 86 86 00 > > addvisors > mam@a... > nørrebrogade 66D, 3. sal > dk-2200 københavn > telefon: 3338 1180 > direkte: 3520 1424 > > The information in this e-mail is confidential and > may be legally privileged. It is intended solely for the addressee.  > Access to the e-mail by anyone else is unauthorised.  > If you are not the intended recipient, any disclosure, > copying, distribution is prohibited and may be unlawful. > > > > --------------------------------- > Yahoo! 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Message
RE: [vintagesynthrepair] Re: Arp Odyssey Power 110/220V?
2005-10-29 by Brian Davies