FredFlintstone
New Member
Hi. I've lurked for a while, but this is my first Q.
I have two identical transformers, each with twin primaries. They have the standard arrangement for 230/115 series/parallel operation.
(I plan to use both transformers in the same supply.)
I would like a simple way of switching from 115V to 230V operation. Do I essentially need a series/parallel switch for each transformer to do this?
Looking at one transformer at a time: If I have the pair of primaries in series, where they join is essentially a centre tap. And if I use just one primary for 115V, I can expect the power rating to be halved, right?
So if halving the power in 115V mode is not a concern, instead of a full series/parallel switch, I could simply switch the mains lead from the centre tap to the other end of the (previously unused) primary, right?
Here's my question: If I use both transformers at the same time, would it matter if the "centre taps" of each transformer are permanently connected to each other?
I have two identical transformers, each with twin primaries. They have the standard arrangement for 230/115 series/parallel operation.
(I plan to use both transformers in the same supply.)
I would like a simple way of switching from 115V to 230V operation. Do I essentially need a series/parallel switch for each transformer to do this?
Looking at one transformer at a time: If I have the pair of primaries in series, where they join is essentially a centre tap. And if I use just one primary for 115V, I can expect the power rating to be halved, right?
So if halving the power in 115V mode is not a concern, instead of a full series/parallel switch, I could simply switch the mains lead from the centre tap to the other end of the (previously unused) primary, right?
Here's my question: If I use both transformers at the same time, would it matter if the "centre taps" of each transformer are permanently connected to each other?