to be absolutely sure ask the retailer what the wires colours are and how to connect up.
As a back up safety measure, use a bulb tester for mains power up. Then you can check voltages without damaging the transformer.
BUT !!!!!! if you wire it back to front, then the secondary voltages will be enormous, maybe way over 1kVac. So sort out the wires colours first.
As a back up safety measure, use a bulb tester for mains power up. Then you can check voltages without damaging the transformer.
BUT !!!!!! if you wire it back to front, then the secondary voltages will be enormous, maybe way over 1kVac. So sort out the wires colours first.
Muchas gracias Felipe, I'm confused by the photo of 50VA, there are 3 big wires(white,yellow and black),I thinked they are the secondary ones, and 4 little ones
that I thinked the primary ones.
Ciao, Orazio
Prego, yes 3 big wires are the primaries for AC & the 4 small wires are secondaries
Buon lavoro, Felipe
to be absolutely sure ask the retailer what the wires colours are and how to connect up.
As a back up safety measure, use a bulb tester for mains power up. Then you can check voltages without damaging the transformer.
BUT !!!!!! if you wire it back to front, then the secondary voltages will be enormous, maybe way over 1kVac. So sort out the wires colours first.
Selectronic R-Cores transformers have writed the color codes in each transformer so don't need to do nothing.
.......... I want purchase some R-core txs from Selectronic, but by the photos they are all
center tapped (they have 3 output wires).Can I divide phisically the secondary to get two
indipendent ones? ... desoldering the two wires that form the central tap?.................
............... I'm confused by the photo of 50VA, there are 3 big wires(white,yellow and black),I thinked they are the secondary ones, and 4 little ones
that I thinked the primary ones.
...........
then why does he need to ask the questions?Selectronic R-Cores transformers have writed the color codes in each transformer so don't need to do nothing.
Is he a danger to him/herself?
Should we be helping this person to kill themselves?
thick insulation and small copper area is likely to be high voltage winding tappings.Thick 3 wires primary, thin 4 wires secondary.
Thin insulation and big copper area is likely to be low voltage winding tappings.
Merlin:
Your advice/comment is very misleading in that it uses the wrong information to chance upon the correct conclusion.
Better to keep quiet than to make up the science you don't understand.
thick insulation and small copper area is likely to be high voltage winding tappings.
Thin insulation and big copper area is likely to be low voltage winding tappings.
You are correct Andrew, this si the point!
ps. don't be afraid, I don't kill myself with a transformer.
Arios, Orazio
That pic clearly tells me that this Rcore has a single primary marked Black/White (Blanc/Noir) for 230Vac duty
AND
it also tells me it is NOT a 3 wire primary !!!!!!!!!!
(I can't read French upside down), but I'll guess the yellow wire is an electrostatic screen that should be connected to Chassis.
AND
finally it tells me it has dual primaries marked Violet/Green and Blue/Red, they are insulated as pairs.
AND
it also tells me it is NOT a 3 wire primary !!!!!!!!!!
(I can't read French upside down), but I'll guess the yellow wire is an electrostatic screen that should be connected to Chassis.
AND
finally it tells me it has dual primaries marked Violet/Green and Blue/Red, they are insulated as pairs.
That pic clearly tells me that this Rcore has a single primary marked Black/White (Blanc/Noir) for 230Vac duty
AND
it also tells me it is NOT a 3 wire primary !!!!!!!!!!
(I can't read French upside down), but I'll guess the yellow wire is an electrostatic screen that should be connected to Chassis.
AND
finally it tells me it has dual primaries marked Violet/Green and Blue/Red, they are insulated as pairs.
You ment Dual Secundairies AndrewT.......
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