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Old 21st October 2012, 03:15 PM   #61
locky_z is offline locky_z  China
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Join Date: Jun 2004
Location: XH
You can select menu 'option->config'
Select 'Relay and resistor define',
Set RB0 value(ohm) as 500
Set RB1 value(ohm) as 6000
Set RB2 value(ohm) as 91000
Set RB3 value(ohm) as 1360000

Set RC0 value(ohm) as 4.55
Set RC1 value(ohm) as 75
Set RC2 value(ohm) as 1000
Set RC3 value(ohm) as 12000
and press save.

but all the 'b7'~'b0' don't change,
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Old 21st October 2012, 05:03 PM   #62
Orion33 is offline Orion33  Russian Federation
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Thanks, Locky
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Old 7th November 2012, 02:06 PM   #63
ilardi is offline ilardi  United States
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Join Date: Mar 2006
Location: Westchester County, NY
Locky_Z. First I want to say that I have enjoyed having this tool immensely. While learning to use it I am also learning a lot more about transistors, JFETS etc. I have a few questions, however.

1) What is meant by 'No Fix' (e.g Vbe->Ic (Fix Vce) or Vbe->Ic (Vce No Fix) in the conditions? I have found that whenever I 'Load' one of the conditions that includes 'No Fix', I get precisely one point on the curve. Is that supposed to be the case? What does No Fix mean? I have been assuming that it means, for example that Vce is not held constant, i.e. it is not fixed. But why does it cause me to only get one point in my curve?

2) The attached curve shows a 'Vds-Id' curve for a 2N5457 NJFET. The red curve shows the results for the two AD sample setting while the blue (smoother curve) shows the curve for the 66 AD sample setting. I obtained similar results for all of the other 2N5457's I had on hand. Mostly I get nice smooth curves using the two AD sample setting for all of the other NJFETs I have tested. Can you suggest why I get less smooth curves for just the 2N5457s?

3) Finally-and this is very minor- I am a little confused by some of the nomenclature in the program. I was always taught that, by convention, the first parameter referred to in the name of a graph is the Y-axis (the ordinate) and the second term is the X-axis (the abscissa). You seem to follow this convention in some places, for example in the left window under Curve Control for the 'Hfe-Ic' curve. But not others in this window and not in the Load Conditions drop down window. Am I reading this wrong? One way to help mitigate potential confusion would be to label the axes. In fact, it would be helpful if there were some ability to label the displayed curves in the program. Better yet, it would be truly helpful if there was an option to allow the program to automatically label the curves, say for the type of transistor, or Ib, etc.

This is an absolutely wonderful tool. Thanks for designing it and making it available for purchase
Attached Images
File Type: png NJFET Vds-Id.PNG (63.2 KB, 309 views)
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Old 7th November 2012, 02:37 PM   #64
ilardi is offline ilardi  United States
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Join Date: Mar 2006
Location: Westchester County, NY
Locky_Z. First I want to say that I have enjoyed having this tool immensely. While learning to use it I am also learning a lot more about transistors, JFETS etc. I have a few questions, however.

1) What is meant by 'No Fix' (e.g Vbe->Ic (Fix Vce) or Vbe->Ic (Vce No Fix) in the conditions? I have found that whenever I 'Load' one of the conditions that includes 'No Fix', I get precisely one point on the curve. Is that supposed to be the case? What does No Fix mean? I have been assuming that it means, for example that Vce is not held constant, i.e. it is not fixed. But why does it cause me to only get one point in my curve?

2) The attached curve shows a 'Vds-Id' curve for a 2N5457 NJFET. The red curve shows the results for the two AD sample setting while the blue (smoother curve) shows the curve for the 66 AD sample setting. I obtained similar results for all of the other 2N5457's I had on hand. Mostly I get nice smooth curves using the two AD sample setting for all of the other NJFETs I have tested. Can you suggest why I get less smooth curves for just the 2N5457s?

3) Finally-and this is very minor- I am a little confused by some of the nomenclature in the program. I was always taught that, by convention, the first parameter referred to in the name of a graph is the Y-axis (the ordinate) and the second term is the X-axis (the abscissa). You seem to follow this convention in some places, for example in the left window under Curve Control for the 'Hfe-Ic' curve. But not others in this window and not in the Load Conditions drop down window. Am I reading this wrong? One way to help mitigate potential confusion would be to label the axes. In fact, it would be helpful if there were some ability to label the displayed curves in the program. Better yet, it would be truly helpful if there was an option to allow the program to automatically label the curves, say for the type of transistor, or Ib, etc.

This is an absolutely wonderful tool. Thanks for designing it and making it available for purchase
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Terry
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Old 8th November 2012, 02:18 AM   #65
locky_z is offline locky_z  China
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Location: XH
Quote:
Originally Posted by ilardi View Post
1) What is meant by 'No Fix'
‘Fix Vce’ mean 'constant Vce'.
In 'Fix Vce' mode,,the program will auto adjust the C channel output and make the vce constant.
In other mode, the program only make C channel output constant,When Ic change,the Vrc(voltage drop of RC) is changed,so the Vce is changed, not constant.

Quote:
Originally Posted by ilardi View Post
2) The attached curve shows a 'Vds-Id' curve for a 2N5457 NJFET. The red curve shows the results for the two AD sample setting while the blue (smoother curve) shows the curve for the 66 AD sample setting. I obtained similar results for all of the other 2N5457's I had on hand. Mostly I get nice smooth curves using the two AD sample setting for all of the other NJFETs I have tested. Can you suggest why I get less smooth curves for just the 2N5457s?
Your 'Ic' is too small, it only 0.44mA,you need to use RC=1K or RC=12K,
Because the measurement accuracy or noise is about 2 ~ 5 mV, if you use RC=75,the Vrc only 33mV, If you choice RC=1K or RC=12K,then VRC will be 440mV or 5.3V, the accuracy is more than RC=75. The curve will be more smooth.

Quote:
Originally Posted by ilardi View Post
3)One way to help mitigate potential confusion would be to label the axes. In fact, it would be helpful if there were some ability to label the displayed curves in the program. Better yet, it would be truly helpful if there was an option to allow the program to automatically label the curves, say for the type of transistor, or Ib, etc.
I have no the regulate of curve name. this is my mistake.

In Version 3.5, It allow user define the axis label display, But it is not automatically label , It need to manually set.
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Old 8th November 2012, 02:54 AM   #66
ilardi is offline ilardi  United States
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Thanks Locky_Z. That is very helpful.

Quote:
Originally Posted by ilardi View Post
1) What is meant by 'No Fix' (e.g Vbe->Ic (Fix Vce) or Vbe->Ic (Vce No Fix) in the conditions? I have found that whenever I 'Load' one of the conditions that includes 'No Fix', I get precisely one point on the curve. Is that supposed to be the case? What does No Fix mean? I have been assuming that it means, for example that Vce is not held constant, i.e. it is not fixed. But why does it cause me to only get one point in my curve
But should I get only one point in my curve as shown below?
Attached Images
File Type: png No fix.PNG (47.4 KB, 316 views)
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Old 8th November 2012, 04:10 AM   #67
Orion33 is offline Orion33  Russian Federation
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Quote:
Originally Posted by ilardi View Post
But should I get only one point in my curve as shown below?
I had the same problem until I put channel gains in the config menu. To Locky: Please make in the next version autoscroll list of curves while adding a new result. I was measuring about 400 transistors and it was uncomfortable to scroll every time.
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Old 8th November 2012, 05:47 AM   #68
locky_z is offline locky_z  China
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Quote:
Originally Posted by ilardi View Post
Thanks Locky_Z. That is very helpful.
But should I get only one point in my curve as shown below?
Click the image to open in full size.
What is your supply voltage?
The software control B/C/E channel power amplifier output voltage what you set, and measure them.
When it measured voltage(Vbh/Vch/Ve) is between you set value-2V ~ value+2V, the software consider the B/C/E channel amplifier is OK. if not, it conside power amplifier is failure, then stop to run.


From your picture,the vc is 35V,If your power supply voltage is less 35V, the power amplifier can output more than 35-2=33V, the software consider the power amplifier is failure,and stop.


If the parameter in ini file is error,example the gain is error, you want to output 30V, but the gain parameter error,so the output is less, the software measure them, consider the ampfilier is error,so stop.


Quote:
Originally Posted by ilardi View Post
Please make in the next version autoscroll list of curves while adding a new result. I was measuring about 400 transistors and it was uncomfortable to scroll every time.
You mean auto jump to the last curve data table?
or
Auto highlight the last curve ?
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Old 8th November 2012, 06:38 AM   #69
Orion33 is offline Orion33  Russian Federation
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Quote:
Originally Posted by locky_z View Post
You mean auto jump to the last curve data table?
Auto jump in data table. I measured the transistors in TO-92 and used the adapter from the connector PLD. Sometimes gets a bad connection and I needed to delete the last measurement.
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Old 8th November 2012, 11:37 AM   #70
locky_z is offline locky_z  China
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You can press Ctrl+End in table of 'Curve Control' page. It will goto to the last row.
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