done. i measured 500pcs BC327-40 Diotec and 500pcs BC337-40 Diotec.
it looks like i am looking for
BC327
in range HFE = 440 - 460
like everybody is, right
Yes quite right some one got mine and yours and not saiing anithink
HI first of all sorry if I have not been here for such a long time
Hint of snow this morning so I am not going to do much in the freezing cold loft
I got batch of Diotec measured up PNP mean 380 NPN mean 440
so still no dice
I ordered same more Diotecs from Conrad's and I may get Lucky
One thing standout about the DIOTEC the HFE match on the batches is really good
is just bit of pot luck to get 2 batches that match
Hint of snow this morning so I am not going to do much in the freezing cold loft
I got batch of Diotec measured up PNP mean 380 NPN mean 440
so still no dice
I ordered same more Diotecs from Conrad's and I may get Lucky
One thing standout about the DIOTEC the HFE match on the batches is really good
is just bit of pot luck to get 2 batches that match
Hi again sorry if I haven't been here it was to cold to work in the loft
I have a couple more batches of BCXXX40 still no matches between PNP and NPN ranges
I will post what I have and start swaps ASAP
In the mean time I have been doing same drawings for a test everything rig
From the top
LM317 supply aloud for 2 / 4 (overkill) voltages
Low resistance test LM317 a current source aloweed to measure resistance drop
HFE match as by Hesener
V drop across LED
Jfet Idss
and VBE match
I got a beta board running more soon
I have a couple more batches of BCXXX40 still no matches between PNP and NPN ranges
I will post what I have and start swaps ASAP
In the mean time I have been doing same drawings for a test everything rig
From the top
LM317 supply aloud for 2 / 4 (overkill) voltages
Low resistance test LM317 a current source aloweed to measure resistance drop
HFE match as by Hesener
V drop across LED
Jfet Idss
and VBE match
I got a beta board running more soon
Attachments
I hope so, i have another 250 337 arriving tomorrow, just in case. i only need a dozen to overlap and i'm done.
I have 2 set of 6x 2sk170 for anyone who would like to use them instead of the group buy substitute parts. These are genuine Toshiba devices, off the reel from Zhangfhou.
First people to pm me with their address get them, no charge.
I have 2 set of 6x 2sk170 for anyone who would like to use them instead of the group buy substitute parts. These are genuine Toshiba devices, off the reel from Zhangfhou.
First people to pm me with their address get them, no charge.
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