Sorry that length was just a guess...
That's what I don't understand, if a coil can act as a delay line because it has a high capacitance then can't it be considered a transmission line?
If so then shouldn't I be able to use the total length of the coil and divide it by whatever the per unit...
Thanks for the articles. I read them both and they both had a lot of info.
The second one stated you need a TDR to be able to determine the delay...
So, I'm still wondering, how can I determine the inductance per unit length and capacitance per unit length? And what units and lengths are to be...
I have a choke which has 2.5mH inductance and 2pF of capacitance.
I have been looking at formulas for calculating the delay time and found
d = sqrt Lo Co
Where Lo is the intrinsic inductance per unit length
and Co is the intrinsic capacitance per unit length
Since I only know the inductance...
Thanks for the help Svein,
So I'm looking at buying this diff probe
https://www.globalmediapro.com/dp/A01LT0/Pintek-DP-25-Differential-Probe-25MHz-1000V/#Compatibles
The specs say the probe has:
Input Impedance :
2M Omh, 2.3 PF between inputs and ground
4M Omh, 1.2 PF between inputs
and...
Hi all,
I've been using a HV step up transformer (10kV-20W on secondary) lately and I'm wanting to look at the HV pulses on an oscilloscope. The coil is isolated from ground. I know connecting a probe directly to it is dangerous and would ruin my scope. I want to use a differential probe but...
Cool, thanks for the suggestions, I'll use them. The function generator is 50 ohms! Any idea how fast the rise and fall time will be?
Would adding a buffer like a 4050 reduce the rise and fall time?
Will my 5V signal from my signal generator be able to drive the 2N3055?
Dumb question I know, it's just been a while since I played around with electronics and I've forgotten a lot.
Sorry, it's 0V to +12V, transformer is one a friend made for me, it has a small gap in the core but it's not a flyback. It's a step up transformer with a 1:5 turns ratio.
I have a signal generator that is used to generate 12kHz square waves. I want to use my signal generator to drive a transformer primary coil. My coil has 12 ohms resistance, 50mH, and will have 12V applied to it @ 1A.
Can I buy a circuit to drive the coil from the signal generator pulse or do I...
Sorry,
Here's a link to what I've been reading, it's about Baluns and why they are needed which is what I don't understand...How can the circuit have different current at either side of the load (antenna)?
http://www.arrl.org/files/file/History/History of QST Volume 1 -...
I've been trying to understand rf unbalanced circuits.
What I don't understand is how you can have a series circuit in which there is a different current flow on each side of the load?
I read that it occurs when there is another path to ground?
Does it have to be a ground? Can you have...
I had it written down but can't find out where I originally got it from?
It doesn't make sense to me as I don't understand what effect the core permeability would have on the length?
Hi everyone,
I read somewhere that when a coil is wound on a magnetic core it's electrical length becomes longer than it's physical length. I remember seeing this formula
L=l * sqrt Ue
Where L= Electrical length
l=actual (physical) length
Ue=Core permeability
Does anyone know if this is...