Dual rail supply, no centre tap

[Tyimo]

Thanks!

 

[jan.didden]

The mystery is solved!🙂
My voltmeter played a trick!

Of course not!

 

[Ketje]

The mystery is solved!🙂
My voltmeter played a trick!

Of course not!

As long as he doesn't understand what happened, for him it's a trick 😀
Mona

 

[jitter]

Q:

I'm guessing you disconnected the wires you planned to use as a centre tap again and measured between the two?

A:

Yes.

All I can think of is this: his meter indeed didn't play a trick... he measured between two windings that were floating with respect to eachother...

 

[Tyimo]

As long as he doesn't understand what happened, for him it's a trick

I just cleaned the sensors tip and waved the plugs. Than everything was allright.🙂

 

[Tyimo]

he measured between two windings that were floating with respect to eachother

Yes, but in addition each measured value was very strange.
Greets:
Tyimo

 

[paulb]

Have a look at this and some of the other articles at the site:
Transformers Part 2 - Beginners' Guide to Electronics

 

[Tyimo]

Yes, thanks!
My mistake was the wrong measurement. I didn't get such a results like in fig 8.1.
The problem solved already.