intelligent semiconductor characteristic curve instrument

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
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...owtopic.92.html

This instrument can test MOSFET / JFET / transistor / diode / SCR / resistance....

It can display the
1."Ic->Hfe" curve
Example 2SA733(PNP) "Ic->Hfe" curve:
An externally hosted image should be here but it was not working when we last tested it.

and 2SA1386's "Ic->Hfe" curve:
An externally hosted image should be here but it was not working when we last tested it.


2."Vbe(Vgs)->Ic(Id)" curve
example MTH15N20 "Vgs)->Id" curve
An externally hosted image should be here but it was not working when we last tested it.


2SK246 Vgs->Id curve
An externally hosted image should be here but it was not working when we last tested it.


3."Vce(Vds)->Ic(Id)" curve
example 2SC3519's "Vce(Vds)->Ic(Id)" curve
An externally hosted image should be here but it was not working when we last tested it.


IRF9610 "Vds->Id" curve
An externally hosted image should be here but it was not working when we last tested it.


4. 3-Terminal Regulator's Vi-Vo curve
Example 78L05
An externally hosted image should be here but it was not working when we last tested it.



The Project use to matching Devices is very excellent
this pict show how to match 9 pair 2SK246s,It Test 9 2SK246s and Show their Vgs-Id curve
An externally hosted image should be here but it was not working when we last tested it.

from the pict,you can see the 4 & 6 curve is match, and the 2 & 5
is match.
By this way ,you can match device precision.

The project use 5 integrate circuit, They's:
1 chip LTC1090(8 channel 10Bit ADC with SPI interface)
1 chip M62359 (8 channel 8 Bit DAC with SPI interface)
3 chips TDA2030 as 3 channels(B C E) programme Push-Pull Power Supply
1 chip 74HC595 as control relay
1 chip TC4050 with PC interface buffer

the instrument don't use MCU,just use PC's parallel port (LPT) to controle the DAC & ADC
 

Attachments

  • 200671915472028312.jpg
    200671915472028312.jpg
    60.7 KB · Views: 722
DIY Semiconductor Intelligent Characteristic Curve

the Circuit
An externally hosted image should be here but it was not working when we last tested it.

Measurement of the curve, including :
BJT (including Optocoupler) :
PNP NPN of Hfe->Ic curve (measurement of the curve is in constant Vce conditions)
PNP NPN of Vbe->Ic curve (measurement of the curve is in constant Vce conditions)
PNP NPN Vce->Ic curve (constant Ib)
P-type or N-type MOSFET and JFET :
Vgs - Id curve (under the conditions of constant Vds)
Vds - Id curve (under the conditions of constant Vgs)
Diodes / Regulators diode / LED positive, reverse curve
positive and negative 3-Terminal voltage regulator IC:
Input voltage->output voltage characteristic curve
Output voltage->current characteristic curve liabilities
also capable of measuring SCR trigger current, voltage trigger, pressure drop, maintain current parameters (not curve)

Below are the same measurement a 2SC3519 high-power BJT curve
Ic = 300-1800mA scope of Hfe ->Ic curve
An externally hosted image should be here but it was not working when we last tested it.

the IC=20-300mA scope of Hfe - Ic curve
An externally hosted image should be here but it was not working when we last tested it.

Ic=2-30mA scope of Hfe - Ic curve
An externally hosted image should be here but it was not working when we last tested it.

Ic=0.5-3mA scope of Hfe - Ic curve
An externally hosted image should be here but it was not working when we last tested it.

Ic = 50-700uA scope of Hfe - Ic curve
An externally hosted image should be here but it was not working when we last tested it.



The same 2SC3519 of Vbe-IC characteristic curve
Ic = 100-1900mA
An externally hosted image should be here but it was not working when we last tested it.

Ic = 5-160mA
An externally hosted image should be here but it was not working when we last tested it.

Ic = 0.3-14mA
An externally hosted image should be here but it was not working when we last tested it.

Ic = 10uA - 1mA
An externally hosted image should be here but it was not working when we last tested it.



Just look again at the output characteristic curve Vce->Ic
Ib constant measurement, Ib = 1-9mA
An externally hosted image should be here but it was not working when we last tested it.

Ib = 0.1-1mA
An externally hosted image should be here but it was not working when we last tested it.

Ib = 10uA - 100uA
An externally hosted image should be here but it was not working when we last tested it.

Ib = 1uA - 10uA
An externally hosted image should be here but it was not working when we last tested it.
 
Below are the same screen shows 12 pic 2SA1386 of Hfe - Ic characteristic curve and Vbe-Ic curve and Vce - Ic curve

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.


By the same measurement conditions , you can show more Semiconductor's curve on same screen.
From the screen ,you can match the most matching Semiconductor



Below is the measurement IRFI740 Vgs from 3V to 3.9V step 0.1V. measuring the Vds - Id characteristic curv
An externally hosted image should be here but it was not working when we last tested it.

Below are the same measurement of the Vgs-curve Id (Id = 0-1700mA)
An externally hosted image should be here but it was not working when we last tested it.

Vgs-curve Id (Id = 0-25mA)

An externally hosted image should be here but it was not working when we last tested it.

Id = 0-1mA
An externally hosted image should be here but it was not working when we last tested it.




Measurement of P-MOS IRF9630 the Vgs->Id curve
An externally hosted image should be here but it was not working when we last tested it.




Measuring diode in a variety of different current of VF characteristics (1N5401 BYV32 FR305 1N4 001 MBR3060 1N4148)
An externally hosted image should be here but it was not working when we last tested it.


An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.



Measuring 6 V Regulators diode positive / negative characteristic curve
An externally hosted image should be here but it was not working when we last tested it.
 
At the same screen to display the JFET's Vgs->Id and Vds->Id characteristic curve (2SK 373GR)
An externally hosted image should be here but it was not working when we last tested it.


Let's look at different suffix of 2SK246 the Vgs->Id curve (GR and Y suffix)
An externally hosted image should be here but it was not working when we last tested it.



Exchange the same 2SK246's D, S pin and measurement they Vgs->ID curve
An externally hosted image should be here but it was not working when we last tested it.



The system also is a characteristic of different polarity to contrast the characteristics of the tubes, For example, the following is the system provides functional polarity reversal and contrast 2SK246GR and 2SJ103GR the Vgs->ID characteristics curve

An externally hosted image should be here but it was not working when we last tested it.
 
Curve Tracer

Does anyone know of any active links for Lock_Z DIY curve tracer and software. This project looks like a cool unit for using at home with out all the major expenses of obtaining a curve tracer from E-Bay. If not does any one know of a project using a USB measurement unit-( the cheaper ones) for doing this with say relays on the digital control ports.
 
Curve Tracer

Locky_Z
I got the basics you sent and am working through some rough translation to better understand it. The site you have posted for the software can you give us a little more to navigate on since it seems to be all posted in Chinese. Is the software availiable ina code that can be edited for changing the language to make it a little easier for us that haven't learned Chinese yet? Thank you agian for all the info you sent out, still working through it.

Regards
Cliff Schuring
 
Re: Curve Tracer

Cliff Schuring said:
... If not does any one know of a project using a USB measurement unit-( the cheaper ones) for doing this with say relays on the digital control ports.


There was a curve tracer thread a while back where this unit was discussed:

http://www.circuit-ed.com/CT100-USB-Semiconductor-Curve-Tracer-P17C5.aspx

I have no connection with the company other than I almost bought one, but got distracted with other things.
 
MightyDub,
I looked at the one you saw also but was looking for a little more current and voltage capablity. Actually talked to the person at circuit-ed and found out that they are working on one that would do this but its not finished yet. Working at getting all the pieces together for Locky_Z's unit and working with it to see if I can get it working. Thank you for the site and idea.

Regards
Cliff
 
Re: Curve Tracer

Cliff Schuring said:
Is the software availiable ina code that can be edited for changing the language to make it a little easier for us that haven't learned Chinese yet?

Last time I looked Windows programs had a resource file to make it possible to change such things as button titles independent of the executable. I could be mistaken, it's a long time, and Windows has changed, but if you're really interested I could poke into that stuff again...

w

'Course you need to know what the buttons should read.
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.