hi friend. how are you?
Do you know me if this amplifier will be good?
No noise complete silence?
thanks
Do you know me if this amplifier will be good?
No noise complete silence?
thanks
convert pdf to gerber
Hi friend. How are you?
Do you know how I can convert pdf to gerber?
Are you that make pcbs layout? Alex?
Thanks
Hi friend. How are you?
Do you know how I can convert pdf to gerber?
Are you that make pcbs layout? Alex?
Thanks
Good to be matched, it improve the sound definitely.
But it will work with out matching if it has source resistor you know the 5W 0.22R or 0.33R etc. value.
Greetings
But it will work with out matching if it has source resistor you know the 5W 0.22R or 0.33R etc. value.
Greetings
Ah ok, thanks!
I saw that Nikoskey wrote some numbers on them... I guess that will be HFE?
Cheers!
I saw that Nikoskey wrote some numbers on them... I guess that will be HFE?
Cheers!
.... no ,it's not Hfe , mosfet's are voltage controlled and BJT are current controlled . I think are gate-source opening voltage ,or something like this....😉
B.R.Alex
B.R.Alex
Alex means the Vgs value at identical source currents.
In this case, in the order of 150mA. (Nikosokey biased his output stage at 120mA per device)
In this case, in the order of 150mA. (Nikosokey biased his output stage at 120mA per device)
Thanks guys. I hope they are close enough. Not cheap those Hitachi 2SJ50/2SK135 mosfets! 🙂
I will match Vgs as suggested. Thanks!
I will match Vgs as suggested. Thanks!
Depends www.diyaudio.com/forums/swap-meet/121949-obsolete-transistors-2sk135-2sj50.html#post1566603
Exicons are a lot cheaper, last batch of their TO-3s I bought were $10 for a N+P pair.
Exicons are a lot cheaper, last batch of their TO-3s I bought were $10 for a N+P pair.
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Joined 2009
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Errrr, no, BJT's are voltage controlled. All active devices are voltage controlled. Some have lower input impedance (BJT) and some higher. The physics of BJT's is well known, do a bit of research for more information.
Indirectly yes .... but directly - no.
Wiki definition =
Same with an FET - opposite , voltage
controlled , but the gate capacitance needs a little current to be overcome.
So , generally - BJT = current and FET = voltage.
OS
It can be seen in many different ways. You can drive a BJT with both voltage drive and current drive, so how can anyone say it is one or the other? Semiconductor behavior isn't black and white.
The important thing is to understand how the transistor reacts to any given situation. You will find statements such as "this is a voltage driven device" will prevent you from really understanding what is happening, when things get just a little bit unusual.
The important thing is to understand how the transistor reacts to any given situation. You will find statements such as "this is a voltage driven device" will prevent you from really understanding what is happening, when things get just a little bit unusual.
Widely debated ...
Even in a physics forum - 😀 https://www.physicsforums.com/threads/why-is-fet-voltage-controlled-and-bjt-current-controlled.335368/
OS
Even in a physics forum - 😀 https://www.physicsforums.com/threads/why-is-fet-voltage-controlled-and-bjt-current-controlled.335368/
OS
According to my bank manager, there's plenty left.
Some of my neighbors think I'm on a numismatist diet.
Some of my neighbors think I'm on a numismatist diet.