Yea, second-to-last sentence of the first paragraph. Here it is again, though http://www.onsemi.com/pub_link/Collateral/2N7002K-D.PDF
I mean, the event will take as long as it takes to transfer the finite amount of charge, right?
Yes, the ESD voltage would be on the green net connected to the source.
Wouldn't the internal ESD diodes (as seen in the datasheet) of the FET provide a path for the current to travel from Source to Gate. As long as the voltage was less than the rated ESD voltage of 2kV, wouldn't it be all...
Hey guys and gals. I am curious as to whether this circuit will protect the FET. I am specifically concerned with ceramic capacitor C14. I used the HBM 150pF 330Ohm 25kV with a worst case capacitor bias of 70% (ie: at the ESD voltage, the capacitance will drop to only 30% of it's rated value) to...
Thanks for the replies.
Relay's are great, but then I would need some extra overcurrent/short circuit protection circuit. The FETs already have that built in. I was thinking of using a NC relay that, when all was functioning fine, would have power to it and be open, but as soon as something...
Yohoho. I've got an N-MOSFET driving some relays that control the 'Run' circuit in a vehicle. If a FET fails, these relays must not cut off power while the car is running. The FET's I'm using are ON Semi's NCV8402. They are pretty heavy duty as it is, but I want to implement some sort of...
Ah. Thanks for the reply. You definitely set me off on the right track. I wasn't finding anything useful before.
I don't quite understand the dual sine, quad phase method you described. Is there any literature that you could point me towards to clarify?
One shot is good enough for me, but I...
I am trying to design a system to measure the distance between two RF transceivers with as small of a resolution as possible. Time-of-flight measurement is nice and easy to do, but it has a poor resolution with low frequency timers. I am thinking of using a low-cost mcu that will probably have a...
Yea I have seen that provision. As long as the system ends up working the way I want it to, I am actually going to incorporate it into a device that I am going to sell. So FCC regs are a concern. Thanks for the heads up, though.
I get how the magnetic field works, I'm wondering if the coil and...
It turns out I can only use a declaration of conformity for unintentional radiators.
But there's better news. Give this a read through and make sure I didn't miss anything, if you would.
§15.209 says that between 9kHz and 490kHz, the field strength must not exceed 2400/freq(kHz). So...
I'm only planning on a range of 2-3 meters, but I'm hoping o use off-the-shelf inductors so they will be much smaller. I definitely won't be using anywhere near 1 watt. I would like to be able to use a declaration of conformity and not have to pay for testing. I think I read that if the radiated...
I am building a 125kHz Near-Field Magnetic Induction Communication system and so will be using ferrite cored inductors for the transmitter and receiver. I am worried about RF radiation as it pertains to the conformance of FCC part 15. I haven't been able to get any good info on how an...
Ok. I changed my question a bit:
Do magnetic fields always have the same fall off rate?
From what I read, I believe they usually do. I came across the near-field and far-field and that was a bit confusing. I didn't get any clear answers on the difference for a magnetic field. All I found...
From http://en.wikipedia.org/wiki/Magnetic_core#Straight_cylindrical_rod" wikipedia page. "The presence of the high permeability core increases the inductance but the field must still spread into the air at the ends of the rod. The path through the air ensures that the inductor remains linear...
I'm actually trying to build something. Those links have a ton of information but don't help me with my questions.
What are some of the other things I need to consider?