What moves the ohmic resistance is which secondary coil one zeilentrafos. Believe me, which is so small that he doesn't really care. ;)
What do you know? He can't be so testing jobs small. Not for nothing are Flyback transformers in operation with the ZVS so hot.
I guess the resistance at 10 k ohms.
At-3mA power (delivers a DST in the TV max) results in the 30V voltage drop and negligible 0,09W power dissipation.
At 100mA, can already be achieved with a ZVS, 1000V it fall off. That makes realistic 100W power loss (the DSTs are know to a powerful ZVS in under 1 min bang hot...). I have been to the inner construction googled but am not looking. how it look like the internal wiring, or can the transformer do not measure? The one pole of the measuring device connect the Red wire of Flyback transformers. The other pole of the measuring device you close a cable ran what at one pole of the battery on and the other pole of the battery and go with the cable connected to each pin of Flyback transformers. Eventually, it should indicate a voltage. He wants to know the resistance of the HV winding, not the pins. and after da diodes with very high are Breakdown voltage, measure the exact hard or impossible. I have repaired just my 160V-Netzteil and even measured the resistance of the DST winding.
I have connected for this purpose the minus pole of the power supply to the HV connector and the positive terminal with the polar opposite of the transformer at the bottom. The internal HV-diodes are in forward direction.
Because of these diodes, you can measure the voltage also not via multimeter. The forward voltage is thus 50... 80V, depending on the transformer.
I installed have an amp meter in the circuit and then so far turned up the voltage on the power supply, until a certain flow.
Following this came out with a larger DST:
10mA at 85V
20mA at 116V
30 Ma at 145V
These values appear first illogical (not very linear looks...). At second glance, but recognizes that she tension per 10mA current to pretty much 30V increases.
This increase is due to the ohmic resistance of the winding. And you can now easily calculate the:
R = 30V / 0,01A = 3000 ohms = 3kohms
That is a quite realistic, even if I would have guessed a higher resistance.
From so scarce 60V ever a current starts to flow. This is due to the already mentioned forward voltage of high voltage diode integrated in the transformer.
I did even a second measurement with a small monitor-DST. It did the following:
10mA at 96V
20mA at 136V.
To increase the current to 10mA, you must increase the tension to 40V. This makes 4kOhm resistance of the winding, so a very similar result.
I guess even when secondary testing operating a Flyback transformers on a powerful ZVS is not so hot the winding (it would have to flow about 150mA, and I don't really think that). Probably the HV capacitors heat up more. Usually even go broke, and then you have just a AC transformer...
I have done this trouble not only because of you. The resistance of the Zeilentrafowicklung interested me even once.
