Methinks that might just be the technical semantics aspect of the thoughts of the person describing its end circuitry use.E.g. if using it to wire up the secondary to a Full wave bridge rectifier circuit…..12-0-12 sounds right.
If wiring that secondary for two power supplies from two different portions to evolve both 12V and a 24V supply outputs, then the use of 0-12-24 might describe its application better.
Or the last one of 24VAC CT, at the least, lets you know how the unit is wound and with what breakouts.
But......that’s just my hai ðồng….
73's de Edd
I don't know the answer but it is interesting to note that the Hammond transformer catalog uses "CT" for all power transformers EXCEPT for the "classic enclosed plate & filament power transformers". For this type the filament secondaries are specified using "CT" i.e. 6.3V @ 4A CT, but the high voltage secondaries are specified as 300-0-300?
Now you have me wondering why.
Gary
:What is the difference between a transformer with 24 volt CT secondary winding vs 12v-0-12v?
But whatever, the two transformers are the same.
Doug
::What is the difference between a transformer with 24 volt CT secondary winding vs 12v-0-12v?
A bridge rectifier has four diodes and is supplied by a single AC winding (without CT).
Doug
:I don't think there is a difference. I like Edd's idea - if the normal use is to supply a bridge rectifier, then, for example, 350-0-350 makes sense. Otherwise, total voltage CT makes sense.
:
:But whatever, the two transformers are the same.
:Doug
:
:::What is the difference between a transformer with 24 volt CT secondary winding vs 12v-0-12v?
Gary
:Correction: I should have said "full-wave" rectifier, not "bridge" rectifier.
:
:A bridge rectifier has four diodes and is supplied by a single AC winding (without CT).
:Doug
:
:
::I don't think there is a difference. I like Edd's idea - if the normal use is to supply a bridge rectifier, then, for example, 350-0-350 makes sense. Otherwise, total voltage CT makes sense.
::
::But whatever, the two transformers are the same.
::Doug
::
::::What is the difference between a transformer with 24 volt CT secondary winding vs 12v-0-12v?
Doug
:True, but if a bridge rectifier is supplied with a CT secondary winding, and the CT is connected to ground, you have (+) and (-) DC outputs.
:Gary
:
:
::Correction: I should have said "full-wave" rectifier, not "bridge" rectifier.
::
::A bridge rectifier has four diodes and is supplied by a single AC winding (without CT).
::Doug
::
::
:::I don't think there is a difference. I like Edd's idea - if the normal use is to supply a bridge rectifier, then, for example, 350-0-350 makes sense. Otherwise, total voltage CT makes sense.
:::
:::But whatever, the two transformers are the same.
:::Doug
:::
:::::What is the difference between a transformer with 24 volt CT secondary winding vs 12v-0-12v?
For my two cents worth, it is just a different way of saying the same thing.
Lewis
:Gary - correct! That would work for supplying op-amps.
:Doug
:
:
::True, but if a bridge rectifier is supplied with a CT secondary winding, and the CT is connected to ground, you have (+) and (-) DC outputs.
::Gary
::
::
:::Correction: I should have said "full-wave" rectifier, not "bridge" rectifier.
:::
:::A bridge rectifier has four diodes and is supplied by a single AC winding (without CT).
:::Doug
:::
:::
::::I don't think there is a difference. I like Edd's idea - if the normal use is to supply a bridge rectifier, then, for example, 350-0-350 makes sense. Otherwise, total voltage CT makes sense.
::::
::::But whatever, the two transformers are the same.
::::Doug
::::
::::::What is the difference between a transformer with 24 volt CT secondary winding vs 12v-0-12v?