edcor 600:10k I/p Transformer whats wrong

skal1 · Dec 5, 2011

HI

just thought i would mess about with 1 of my edcor tx and i dont like what i see .

1v 1khz square wave.

1v 1khz square injected into a 600:10k edcor tx no loading

so whats wrong here , or i am i missing something..

thanks

skal1

PRR · Dec 5, 2011

> 1v 1khz square injected into a 600:10k edcor tx no loading

What is the source impedance?

skal1 · Dec 6, 2011

@ PRR

The oscilloscope manual has no ref to the out impedance of the cal out...

cheers

skal1

skal1 · Dec 6, 2011

will i have just had a look at the os250tv and the input impedance is 10mhz, so maybe the calibrator output is 10mhz as well.. just guessing.

skal 1

skal1 · Dec 11, 2011

BUMP BUMP

Kingston · Dec 12, 2011

skal1 said:
will i have just had a look at the os250tv and the input impedance is 10mhz, so maybe the calibrator output is 10mhz as well.. just guessing.

assuming the calibrator square wave output is 10mhz is not a good idea. And so is using calibrator output for anything else than its intended purpose! We can at least assume the output is very weak, or at least more than 10k. It won't drive the transformer at all proven by your strange looking mangled squarewave. You lost low freq content, which was expected.

Anyway, don't even try to measure any transformers (or anything else but the test probes) using the oscilloscope calibration test signal. You need a proper signal generator for this.