Computer semiconductor characteristic curve Project

[locky_z]

I'm doing My Project is "Computer semiconductor characteristic curve" (My english is bad.So Just Show the test result.)

My project link(China) is http://www.hifidiy.net/bbs/boke.asp?Userid_176.showtopic.92.html

This instrument can test MOSFET / JFET / transistor / diode / SCR / resistance....
Can Show
Ic->Hfe curve
Vbe(Vgs)->Ic(Id) curve
Vce(Vds)->Ic(Id) curve

The VCE measure range from 0 to 36V
The IC measure range from 2mA to 3A

this 11's 2SK216 Vgs->Id curve

 

[Netlist]

Looks very nice. I only we could find someone to translate.
I presume the device is somehow connected to the PC via USB?

/Hugo

 

[locky_z]

I use LPT port to connect PC
The component just use below
TDA2030 x3
LTC1090/LTC1290 x 1
M62359 x1
CD4050 x1
74HC595 x1
TL431 x 1
78L05 x1
7812 x1
and some other general component

the pict is two matching 2SA733 Ic->Hfe curve

 

[jacco vermeulen]

Locky-Z,

will you make the board layout and the programming file available so that we can build a curve tracer too ?
What does the collector/drain supply look like ?

 

[locky_z]

I use 3 Channel DAC to driver 3 x TDA2030 as B/C/E Channel Power Supply.

When Channel_C is output 38V,Channel_E is 2V,so VCE is +36V.
When Channel_C is output 2V,Channel_E is 38V,so VCE is -36V.
So we can test P or N type BJT/MOS/J-FET..... And only use single 40V power supply.

The circuit and PCB file as upper link.
But it is Chinese. and i don't know to translate to English.