As Zeon has kindly shown you
the k170 always has the drain on the left and the source on the right.
That leaves the gate in the middle.
The j74 is the same.
There are/were only two manufacturers and both arrange the leadouts the same.
But, as with all devices look up their datasheet.
the k170 always has the drain on the left and the source on the right.
That leaves the gate in the middle.
The j74 is the same.
There are/were only two manufacturers and both arrange the leadouts the same.
But, as with all devices look up their datasheet.
I will try one last time of explaining the problem, I hope I succeed this time. I KNOW how to find out the pinout of the devices, I also know how to read a schematic in general - what I dont know is which leg is the Drain and which is the Source (in the schematic!) posted by Apex in post #374, page 38.
I believe that the source terminals are all the ones closest to their channel's 22uF output capacitors.
Thank you - can someone else confirm this?
This was made confusing by the nonstandard representation. The gate should be drawn closer to the source terminal than the drain on the diagram.
Yes, exactly, thank you so much🙂
I will draw PCB with the source terminals closest to the 22µf capacitors - hope it works. Guess I will find out the hard way 😀
Hi Mile,
Can the HV23 run on 2 pairs mosfet at output?
I prefer normal listening, not high power.
What PSU and mods required?
Can the HV23 run on 2 pairs mosfet at output?
I prefer normal listening, not high power.
What PSU and mods required?
No, you aren't being stupid at all but there is a characteristic of these and many small-signal JFETs that removes the problem.
Despite the fact that specific pins must be assigned to Drain and Source, 2SK/LSK 170 are among many JFETs that are completely identical in their structure and can be used either way around with impunity. I have this on the authority of wiser heads here (even John Curl now agrees) but of course, some people always become frustrated when things are not placed in a specific order, regardless of whether it matters or not. 😉
Hello guys
I was coping again the Apex HV23 and it came out that one of the diodes D6 and R45 2K2 is not placed in the same way as the schematic is illustrated ? does some one have a problem it will work the same ? I'm trying to make it as accurate as possible 🙂
Reagards
Juan
I was coping again the Apex HV23 and it came out that one of the diodes D6 and R45 2K2 is not placed in the same way as the schematic is illustrated ? does some one have a problem it will work the same ? I'm trying to make it as accurate as possible 🙂
Reagards
Juan
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ok thimios no problem man 🙂
hey I also simulated today and I think I have good results not bad at all, on the software I have it does not have the transistor 2SA1033 I just place a generic one and still behave good I mean I know there are better software to simulate but at least I have an approximation sort like a percentage ok here are the files please if you notice something let me know I'm attaching the schematic I use to remake this layout I bet in real time most be sound really good 🙂
Regards
Juan
hey I also simulated today and I think I have good results not bad at all, on the software I have it does not have the transistor 2SA1033 I just place a generic one and still behave good I mean I know there are better software to simulate but at least I have an approximation sort like a percentage ok here are the files please if you notice something let me know I'm attaching the schematic I use to remake this layout I bet in real time most be sound really good 🙂
Regards
Juan
