VE1BLL......guess I should have "Googled" first. (Who have thunk that Google would become a verb...HaHaHa)
Are you in the Military now? (I am a grumpy old Vietnam Vet)
If so, I thank you and apperciate your service!
I just found this link!http://api.ning.com/files/ASjF3*J4-wakk42W6m2BpfoVXXMzjWOVJ4EAZu78FyOHQHp3ZFmcKAVjVDLRiBWdPwvECoScD7lFS*QYY9BHCIjkr8Fzm*Ru/3.3Vtipsandtricksen026368.pdf
Thanks for the reply VE1BLL....
Don't know the resolution of the Analog Input, but I don't want to sacrifice any resolution by wasting bits. (software guy will have a fit! HaHaHa.)
Just need a simple circuit to clamp the voltage so it never goes over 3.3V.
I was thinking about an Op Amp with...
So, our software guy has designed a PWM drive for our new 30kW Buck Regulator Design. Unfortunately, he has chosen an Arm Microcontroller that is powered with 3.3VDC, and the Analog inputs for voltage and current are also limited to 3.3VDC.
My current sensor is a LEM, with a nonimal output of...
to hgldr.....your answer is the only one that seems to make sense.
I just don't understand it yet.....but I think you may have the key to my problem.....:)
I appreciate the reply's.....
I have been experimenting with the Avago HCNR200 analog isolator, but it just isn't fast enough.
I know that LEM makes voltage sensors....but they very expensive, and not much faster than their current sensors.
I need a fast response to both Voltage and Current...
to zzzjim.....
You asked..." Are supply and magnetron separated by a reasonable distance , or will there be some RFI as well as high voltages & Magnetic fields in the area ?"
All of the above.....
To VE1Bll....
This is for our production units. Testing is no problem, as I have Textronix HV Differential Probes.
Sampling rate is not the issue. (Output frequency is 20-50Khz)
I currently have a voltage divider, and it is referenced to the Positive output. (Again, Magnetrons...)
The noise...
Let me try to make this simple....
I design and build Pulsed Power supplies for Magnetron Sputtering.
The output voltage is anywhere from 600 to 1700 VDC, and the current can reach as much as 1,000 Amps. (If you deal with Magnetrons....you will know what I mean.)
Measuring current is no...
