Recent content by BHY-BK

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...

Connected to the secondary of the transformer is capacitor and resistive load of about 300 ohms

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...

Are you saying you can have lines with the same electrical length but different inductances, I do understand that.

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...