Of course, I agree that the manual is needed. I'll write it this weekend. Bear in mind that I do not know English very well and I have to use the online translator and dictionary. So for me it is not an easy 30-minutes work 😱
You can send it to me for editing -- I can write technical English, but not Polish! ( I edit my wife's journal articles in molecular bio).
I wish the author of "Fundamental Amplifier Techniques with Electron Tubes" had requested some help.
That is a great start. Your English is excellent.
Some information on how to change the information is the blue rectangle would be useful. I tried changing the loudspeaker impedance to 600 but it would not accept it when I pressed apply.
Cheers
Ian
This is a great tool thanks for making it. Is there any chance of having the Russian 6N17b tube added please?
There is no such limitation. Even the default [RL] value is 4 ohms.
Do not confuse the speaker resistance [RL], the internal resistance of the tube [Ri] and the load line slope [Ra].
These are different values. Speaker resistance is taken into account only when calculating the speaker transformer ratio (to transform RL into Ra).
Yes, of course. I'll add this tube.
Try entering anything above 128.9 Ohms in that edit box. It gets reset to 4 Ohms.
Why would I confuse these?
You are ABSOLUTELY right 
.
I translated your post carelessly that you can not specify a value LOWER than 128 ohms and not GREATER than 128 ohms (that was I mentioned this 4 ohms as default value and confusion with resistance values). Of course, I willl remove this limitation as soon as possible.
Sorry for the confusion - my fault
. I translated your post carelessly that you can not specify a value LOWER than 128 ohms and not GREATER than 128 ohms (that was I mentioned this 4 ohms as default value and confusion with resistance values). Of course, I willl remove this limitation as soon as possible.
Sorry for the confusion - my fault
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I've changed the RL limit. New limit value equals 100000ohms. I hope this new value will satisfy all users.
This is an excellent program thank you.
I have two requests:
Would it possible to put actual values on the Ua axis instead of the xxV/div?
And for resistance loaded calculations it would be nice to be able to see the output voltage swing - perhaps extend the yellow markers down to the Ua axis with values?
I have two requests:
Would it possible to put actual values on the Ua axis instead of the xxV/div?
And for resistance loaded calculations it would be nice to be able to see the output voltage swing - perhaps extend the yellow markers down to the Ua axis with values?
Proposal
Dear Grzegorz,
congratulations to you for your valuable tool you generated!
I guess it will take a lot of effort to incorporate all tube requests you already got and the ones you will get.
Therefore I thought (and unfortunately I'm not able to do such programming) maybe an extension similar to what Michael Rothacher did (Interactive SIT Modeler | Audiohobby.com) could help.
He provided us with a Java programe that approximates curve traces based on screen shots or any kind of graphically published data and outputs parameters of a spice model. As he concentrated on approximating curve traces of SIT transistors he had to use a slightly more complex mathematical model than the one usually used for triodes.
So maybe some extension to your tool that lets the user graphically approximate the underlying spice model parameters could free you from implementing a lot of tubes and make your excellent tools even more general and wider applicable? Just my thought.
Thanks again, Merry Christmas and all the best,
Ulrich
Dear Grzegorz,
congratulations to you for your valuable tool you generated!
I guess it will take a lot of effort to incorporate all tube requests you already got and the ones you will get.
Therefore I thought (and unfortunately I'm not able to do such programming) maybe an extension similar to what Michael Rothacher did (Interactive SIT Modeler | Audiohobby.com) could help.
He provided us with a Java programe that approximates curve traces based on screen shots or any kind of graphically published data and outputs parameters of a spice model. As he concentrated on approximating curve traces of SIT transistors he had to use a slightly more complex mathematical model than the one usually used for triodes.
So maybe some extension to your tool that lets the user graphically approximate the underlying spice model parameters could free you from implementing a lot of tubes and make your excellent tools even more general and wider applicable? Just my thought.
Thanks again, Merry Christmas and all the best,
Ulrich
