Hey guys, quick question for the gurus.
The nifty thing I use to measure inrush current is out for cal. So, I want to try to measure it using a current sense resistor and a scope. Trying to measure the inrush on a new 60W off-line flyback design.
Was looking for some 0.1 Ohm, but all I have on hand are 0.01 Ohm resistors. The scope is a digital storage 1GS/s Tektronics job.
I get what equates to about 150A when on the ~nanosec time scale, and about 20A when on the 1ms scale. I know 20A sounds like a more plausible reading, but I want to make sure I'm doing this right. Any input?
Thanks!
The nifty thing I use to measure inrush current is out for cal. So, I want to try to measure it using a current sense resistor and a scope. Trying to measure the inrush on a new 60W off-line flyback design.
Was looking for some 0.1 Ohm, but all I have on hand are 0.01 Ohm resistors. The scope is a digital storage 1GS/s Tektronics job.
I get what equates to about 150A when on the ~nanosec time scale, and about 20A when on the 1ms scale. I know 20A sounds like a more plausible reading, but I want to make sure I'm doing this right. Any input?
Thanks!