On 2/13/21 6:39 AM, Ed Krome wrote:
Thank you for the responses. I think I was unclear. What I am trying to understand is how one relates the marked value of a component to what nanovna shows. Using DL5FA¡¯s item 8 inductor, my devices show 700 nH @50khz. But at 100mhz, the reading is 1uH. But the component is speced as 470nH, a value I can¡¯t see anywhere, regardless fir frequency. How should I be reading this thing?
Thanks!
There is always some parasitic C around, which usually "reduces" (or cancels) some of the inductance - sort of the opposite of what you're seeing - but in any case, the amount of cancellation you get is frequency dependent (since the VNA is measuring X, and then converting that to nH)
Are you allowing for the inductance of the leads going to the component.? A handy thing is "about 1 nH/mm or 1 uH/meter" for a single wire.
