1. I couldn't find the differences of the 2 types of varactors (varicaps). I used the CV method and got the curve, but I don't know if I have a n type or p type. How can you tell?

  2. How do you calculate the capacitance curve with CV voltages?

  • \$\begingroup\$ Perhaps if you listed the part numbers here. Varactors are a type of diode and they don't have "channels" like a MOSFET device. \$\endgroup\$
    – jwh20
    Feb 25, 2021 at 15:44
  • \$\begingroup\$ The whole idea of the lab is that I shouldn't know, but see it in the graph. I don't want to cheat :) I think it was a MOSFET used as varaktor, we did the CV method on it \$\endgroup\$
    – Toma
    Feb 25, 2021 at 16:06
  • \$\begingroup\$ Varactors are diodes, not FETs. There's only one type of them. \$\endgroup\$
    – Hearth
    Feb 25, 2021 at 16:25
  • \$\begingroup\$ But doesn't a MOSFET have a capacitance like a varactor? I think we took a MOSFET and ran a sweep and took the gate source voltages and calculated the capacitance from them, I mean the code did that, so I'd like to know how. \$\endgroup\$
    – Toma
    Feb 25, 2021 at 16:34
  • 1
    \$\begingroup\$ It's in the slide show. There's a page with a couple of CV plots. The P type has a real advantage over the N type. \$\endgroup\$
    – JRE
    Feb 25, 2021 at 17:03


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