Power supply for 220 VAC
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I'm planning a short DXpedition to a 220V country.
Does anyone know of a quiet switching power supply that would run on 120V 60Hz and on 220V 50Hz? I'm leaning towards a QRP operation, requiring a smaller supply, approx 5A at 12V output. However, since this is likely to be a once in a lifetime deal I might take a 100W transceiver and would then need a larger supply, say 40A at 12V. Any guidance would be appreciated. Thanks in advance. Ken Alexander VE3HLS _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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It's usually not very difficult to find transformers that will bring the 220V to 110V for your equipment. They come in a variety of sizes, depending what power capacity you need. You could then use a power supply you already have, needing at most an adaptor for the plug type.
Granted, that adds a box, but that's usually not a deal-breaker. CPT Drew Neve - KB9LLO Battle Captain S3 ASG-Kuwait Eager to Assist ----- Original Message ----- From: Ken Alexander <[hidden email]> Date: Wednesday, May 10, 2006 5:47 am Subject: [Elecraft] Power supply for 220 VAC > I'm planning a short DXpedition to a 220V country. > Does anyone know of a quiet switching power supply > that would run on 120V 60Hz and on 220V 50Hz? > > I'm leaning towards a QRP operation, requiring a > smaller supply, approx 5A at 12V output. However, > since this is likely to be a once in a lifetime deal I > might take a 100W transceiver and would then need a > larger supply, say 40A at 12V. > > Any guidance would be appreciated. Thanks in advance. > > Ken Alexander > VE3HLS > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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[hidden email] wrote:
> It's usually not very difficult to find transformers that will bring > the 220V to 110V for your equipment. They come in a variety of > sizes, depending what power capacity you need. You could then use a > power supply you already have, needing at most an adaptor for the > plug type. Granted, that adds a box, but that's usually not a > deal-breaker. Most SWITCHING power-supplies will already run on anything from about 90v to about 280v. Check the one you've already got, otherwise I'm sure hamradio.co.uk would gladly sell you something: http://hamradio.co.uk/acatalog/power_supplies.html - check eham for reviews of each model. [No connection with ML+S, just a customer] -- "Nosey" Nick Waterman, G7RZQ, K2 #5209. use Std::Disclaimer; [hidden email] I still miss my ex-wife - but my aim is improving! _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Ken Alexander-2
Bonjour Ken..
I am using a Samlex SEC 1223 supply .. light and easy to change the voltage.. 100 to 130 v and 200 to 260 v .. just open it and change the plug. and you can use it when you are back .. ( take care to not use only 1223 CE .. who run only under 220v ) http://www.samlexamerica.com/products/power_subcategory.asp?packagetype=3&CategoryID=2&title=Desktop Tried also Alinco 330 mv but not really happy of it ... "lightning supply" when you touch it cause of groundless (i think) cu soon on air.. au revoir jean louis K2 #5371 http://perso.wanadoo.fr/f5nhj/ <I'm planning a short DXpedition to a 220V country. <Does anyone know of a quiet switching power supply <that would run on 120V 60Hz and on 220V 50Hz? _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Ken Alexander-2
Ken:
The Samlex 1223 switching P/S is 'jumperable' for 120/220 VAC and it's not terribly noisy (RF-wise). In fact, many users report no RFI from these supplies. If you do notice some RFI, I have some info on added filtering for this supply available on my website at www.n0ss.net I have one of these supplies and have been quite pleased with its performance. 73, Tom Hammond N0SS At 09:47 PM 5/9/2006, Ken Alexander wrote: >I'm planning a short DXpedition to a 220V country. >Does anyone know of a quiet switching power supply >that would run on 120V 60Hz and on 220V 50Hz? > >I'm leaning towards a QRP operation, requiring a >smaller supply, approx 5A at 12V output. However, >since this is likely to be a once in a lifetime deal I >might take a 100W transceiver and would then need a >larger supply, say 40A at 12V. > >Any guidance would be appreciated. Thanks in advance. > >Ken Alexander >VE3HLS >_______________________________________________ >Elecraft mailing list >Post to: [hidden email] >You must be a subscriber to post to the list. >Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > >Help: http://mailman.qth.net/subscribers.htm >Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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I used a Samlex 1223 in S Korea for a year. Worked great on 220V. Just disconnect the yellow jumper. Instructions come with the power supply. Never noticed any RF or other noise. Evan, W5IQS ______________________________________________________________ From: Tom Hammond <[hidden email]> To: Ken Alexander <[hidden email]>,Elecraft <[hidden email]> Subject: Re: [Elecraft] Power supply for 220 VAC Date: Wed, 10 May 2006 04:56:48 -0500 >Ken: > >The Samlex 1223 switching P/S is 'jumperable' for 120/220 VAC and >it's not terribly noisy (RF-wise). In fact, many users report no RFI >from these supplies. > >If you do notice some RFI, I have some info on added filtering for >this supply available on my website at www.n0ss.net > >I have one of these supplies and have been quite pleased with its >performance. > >73, > >Tom Hammond N0SS > >At 09:47 PM 5/9/2006, Ken Alexander wrote: >>I'm planning a short DXpedition to a 220V country. >>Does anyone know of a quiet switching power supply >>that would run on 120V 60Hz and on 220V 50Hz? >> >>I'm leaning towards a QRP operation, requiring a >>smaller supply, approx 5A at 12V output. However, >>since this is likely to be a once in a lifetime deal I >>might take a 100W transceiver and would then need a >>larger supply, say 40A at 12V. >> >>Any guidance would be appreciated. Thanks in advance. >> >>Ken Alexander >>VE3HLS >>_______________________________________________ >>Elecraft mailing list >>Post to: [hidden email] >>You must be a subscriber to post to the list. >>Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft >> >>Help: http://mailman.qth.net/subscribers.htm >>Elecraft web page: http://www.elecraft.com > >_______________________________________________ >Elecraft mailing list >Post to: [hidden email] >You must be a subscriber to post to the list. >Subscriber Info (Addr. Change, sub, unsub etc.): >http://mailman.qth.net/mailman/listinfo/elecraft > >Help: http://mailman.qth.net/subscribers.htm >Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Ken Alexander-2
On May 9, 2006, at 7:47 PM, Ken Alexander wrote: > I'm planning a short DXpedition to a 220V country. > Does anyone know of a quiet switching power supply > that would run on 120V 60Hz and on 220V 50Hz? > > I'm leaning towards a QRP operation, requiring a > smaller supply, approx 5A at 12V output. However, > since this is likely to be a once in a lifetime deal I > might take a 100W transceiver and would then need a > larger supply, say 40A at 12V. > > Any guidance would be appreciated. Thanks in advance. > > Ken Alexander > VE3HLS The January 2000 issue of QST had a review of several switching power supplies showing the noise characteristics. Several of these not only had fairly low noise, but could also operate on both 110v and 220 v. The Astron SS-30M, Kenwood PS-40 and MFJ-4225MV look pretty good on both accounts. On a trip to Europe a few years ago I took my K2 with a MFJ-4103. This is a small light-weight supply which works on a wide range of voltage and seems to be very quiet. It is only rated at 2.89 amps, but was adequate for the K2 even at full output. Unfortunately I had forgotten to bring the removable power cord but since it uses a standard computer-type cord I was able to find one fairly easily (I operated from the battery for a few hours in the meantime). 73, Bob Nielsen, N7XY _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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On Wed, 10 May 2006 08:43:56 -0700, Bob Nielsen wrote:
>Unfortunately I had >forgotten to bring the removable power cord but since it uses a >standard computer-type cord I was able to find one fairly easily (I >operated from the battery for a few hours in the meantime). It's been 40 years since I had to work on 220/240V mains and I had some very hefty auto-transformers for fixed-station use.. Did you use an adapter for the US mains plug or was the computer power cord one that the "locals" use with the proper plug configuration? -- 73 de K2ASP - Phil Kane _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Ken Alexander-2
On May 10, 2006, at 9:22 AM, Phil Kane wrote: > On Wed, 10 May 2006 08:43:56 -0700, Bob Nielsen wrote: > >> Unfortunately I had >> forgotten to bring the removable power cord but since it uses a >> standard computer-type cord I was able to find one fairly easily (I >> operated from the battery for a few hours in the meantime). > > It's been 40 years since I had to work on 220/240V mains and I had > some very hefty auto-transformers for fixed-station use.. Did you > use an adapter for the US mains plug or was the computer power cord > one that the "locals" use with the proper plug configuration? > Had I remembered to bring my own cord, I would have used an adapter. The cord I bought in France had the standard European two round pins. 73, Bob, N7XY _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by f5nhj
I also got rid of the Alinco 330 as it was noisy, must be why they give the
control to change freqs. The 1223 and the Astron SS-30M are both good supplies from my experience. Bill K9YEQ K2-35 & 5279; KX1-35/3080 ___________________________________ -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of f5nhj Sent: Wednesday, May 10, 2006 3:23 AM To: Elecraft Subject: Re: [Elecraft] Power supply for 220 VAC Bonjour Ken.. I am using a Samlex SEC 1223 supply .. light and easy to change the voltage.. 100 to 130 v and 200 to 260 v .. just open it and change the plug. and you can use it when you are back .. ( take care to not use only 1223 CE .. who run only under 220v ) http://www.samlexamerica.com/products/power_subcategory.asp?packagetype=3&Ca tegoryID=2&title=Desktop Tried also Alinco 330 mv but not really happy of it ... "lightning supply" when you touch it cause of groundless (i think) cu soon on air.. au revoir jean louis K2 #5371 http://perso.wanadoo.fr/f5nhj/ <I'm planning a short DXpedition to a 220V country. <Does anyone know of a quiet switching power supply <that would run on 120V 60Hz and on 220V 50Hz? _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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That's strange. The QST report showed the Alinco DM330MV as being
one of the quietest ones. Mine certainly is very quiet (I have never found anything where I needed to adjust the frequency). I wonder if there is a quality control problem (unusual for a Japanese manufacturer). The Alinco comes in both 120 and 220 volt versions, but is not switchable between the two voltages. Bob, N7XY On May 10, 2006, at 7:06 PM, Bill Johnson wrote: > I also got rid of the Alinco 330 as it was noisy, must be why they > give the > control to change freqs. The 1223 and the Astron SS-30M are both good > supplies from my experience. > > > Bill > K9YEQ > > K2-35 & 5279; KX1-35/3080 > ___________________________________ > > > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of f5nhj > Sent: Wednesday, May 10, 2006 3:23 AM > To: Elecraft > Subject: Re: [Elecraft] Power supply for 220 VAC > > Bonjour Ken.. > > I am using a Samlex SEC 1223 supply .. light and easy to change the > voltage.. 100 to 130 v and 200 to 260 v .. just open it and change > the plug. > > and you can use it when you are back .. ( take care to not use only > 1223 CE > .. who run only under 220v ) > http://www.samlexamerica.com/products/power_subcategory.asp? > packagetype=3&Ca > tegoryID=2&title=Desktop > > Tried also Alinco 330 mv but not really happy of it ... "lightning > supply" > when you touch it cause of groundless (i think) > > cu soon on air.. au revoir > > jean louis > K2 #5371 > http://perso.wanadoo.fr/f5nhj/ > > <I'm planning a short DXpedition to a 220V country. > <Does anyone know of a quiet switching power supply > <that would run on 120V 60Hz and on 220V 50Hz? > > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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