help me understand this curve tracer

Ok I hvae in front of me a telequipt ct71 transistor and jfet cuver tracer. I'm I'm trying without a manual to figure out what I'm doing to and what I should be seeing could someone help me understand this? I'm trying to match some 2n5210's Help

Wil

Wilebee

Unless someone here has used that exact model of curve tracer before, you're gonna have to provide a lot more detail.

Wil,

A curve tracer will help you plot current versus voltage relationship. Beta or Hfe will be the calculated using Ic/Ib at the Vce of interest. Ic is calculated by picking your Vce and reading the Y-axis voltage. So Ic=Vy/Re (roughly).
The following is a common way of testing:
1. Insert the transistor so that base, collector and emitter are hooked up correctly.
2. Need to set Vce SWEEP between 0 and 10V.
3. For each sweep you need to adjust the base current, Ib, to the figure of interest. If you have a design that requires 20uA base current then you set it so.

If you want to characterize the device you usually have to do more work and do a Vce sweep in 20uA increments from 0 to 100uA.

Cheers,
Tamas

So I guess its working right Tomas Are we still on for next weekend ? Pm me Wil


Wilebee