hi, idk if this question goes in this forum. admin, please move it if it does not belong here.
the thing is, I want to convert a 110volt receiver to use it in my country where we use 220v.
as it is a standard receiver, it has a big transformer that feeds the amp section and the audio processing stage.
shouldn't be as easy as how from parallel to serial in the input on the transformer? the voltage provided by the transformer should stay the same, without the need of any other modification.
I suppose most receivers are the same for 110v and 220v markets, with the same parts and transformer with dual primary windings (most of the time Bando branded transformers)...
thanks in advance
the thing is, I want to convert a 110volt receiver to use it in my country where we use 220v.
as it is a standard receiver, it has a big transformer that feeds the amp section and the audio processing stage.
shouldn't be as easy as how from parallel to serial in the input on the transformer? the voltage provided by the transformer should stay the same, without the need of any other modification.
I suppose most receivers are the same for 110v and 220v markets, with the same parts and transformer with dual primary windings (most of the time Bando branded transformers)...
thanks in advance
If the primary consists of two equal windings in parallel, you can indeed just put them in series (making absolutely certain not to put them in antiseries).
Another thing may be the de-emphasis of the FM tuner. In Europe it has to be 50 us, in the USA 75 us.
Another thing may be the de-emphasis of the FM tuner. In Europe it has to be 50 us, in the USA 75 us.
it's a sony str dn1080, but I assume all manfacturers do the same (Marantz+denon, sony, yamaha, onkyo+pioneer, etc.) at least on the low-medium budget versions.
the thing is... can you recognize if a transformer has dual primary windings just by the looks of it? or you need to do some tests nor need the schematics, as they are impossible to get for modern models.
I will check the fm de-emphasis, but if it only affects fm radio, it's no problem at all.
cheers
the thing is... can you recognize if a transformer has dual primary windings just by the looks of it? or you need to do some tests nor need the schematics, as they are impossible to get for modern models.
I will check the fm de-emphasis, but if it only affects fm radio, it's no problem at all.
cheers
You would need to check if its a dual standard mains transformer input involving both windings in series which would be 4 connections 2 outer and the inner joined taking into account the phase relationship.
Basic Transformer Hook Up Data - Hammond Mfg.
Basic Transformer Hook Up Data - Hammond Mfg.
Some products use a 50/60 115/230 transformer for all markets.
Some products come in several sub-models with different transformers for different markets.
60Hz lands can use a slightly cheaper transformer, and sometimes the cost savings is justified.
Different markets are not JUST about V and Hz but also plugs, switching, fusing, thermal fusing (and also radio band space and EQ).
Find service manual.
Sony STR-DN1080 Multi Channel AV Receiver Manual | HiFi Engine
Hmmmm.... first page shows two models, US/CAN and AEP/UK/Aus. Different model numbers. But could it be converted?
Deep in the drawings and parts-lists we find two different Main transformers for the two markets.
There is also a small Standby power transformer with specific V and Hz design.
IMHO, the most practical answer is a 230V:115V stepdown transformer at 250VA-300VA.
Some products come in several sub-models with different transformers for different markets.
60Hz lands can use a slightly cheaper transformer, and sometimes the cost savings is justified.
Different markets are not JUST about V and Hz but also plugs, switching, fusing, thermal fusing (and also radio band space and EQ).
Find service manual.
Sony STR-DN1080 Multi Channel AV Receiver Manual | HiFi Engine
Hmmmm.... first page shows two models, US/CAN and AEP/UK/Aus. Different model numbers. But could it be converted?
Deep in the drawings and parts-lists we find two different Main transformers for the two markets.
There is also a small Standby power transformer with specific V and Hz design.
IMHO, the most practical answer is a 230V:115V stepdown transformer at 250VA-300VA.
Attachments
In return, a 60 Hz transformer will operate closer to saturation in 50 Hz territory even at correct voltage, and may display excessive hum unless input voltage is reduced somewhat below nominal. Hopefully there'll be enough leeway in the input voltages to all the voltage regulators, since otherwise the audio may exhibit excessive hum...
Thank you all for your replies and comments, and thank you PRR for providing the service manual for my receiver. So, probably will look to sell it.
From my poor understanding, it seems it is not viable to rewire the power transformer, as it seems 110v and 220v versions use a different transformer, and not just the same, rewired.
From that point of view, does anyone have any feedback on "easy to mod" receivers? what about Denon X3*00? or Marantz 601* series?
Cheers
From my poor understanding, it seems it is not viable to rewire the power transformer, as it seems 110v and 220v versions use a different transformer, and not just the same, rewired.
From that point of view, does anyone have any feedback on "easy to mod" receivers? what about Denon X3*00? or Marantz 601* series?
Cheers