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Old 8th November 2018, 08:13 AM   #701
mikorist is offline mikorist  Serbia
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Quote:
Originally Posted by Ben Mah View Post
From David @ Cinemag, they are doing a production run now of CMOQ-4HPC, so they will be shipping soon.
Thanks for info. I'm waiting too
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Old 11th November 2018, 12:28 AM   #702
sontero is offline sontero  Italy
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beginning of the work .... populating the pcb...

the 2SK180 are waiting ..... on the pcb they can not be soldered
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Old 11th November 2018, 12:35 AM   #703
dewdrop is online now dewdrop  Singapore
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Looking good!
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Old 11th November 2018, 12:39 AM   #704
Zen Mod is offline Zen Mod  Serbia
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open these red jumpers , if you didn't already set buffers

do you know Ugs for your 2SK180 , for Iq in range of 1A8-2A ?

of course that you need to find a way of mounting 2SK180 - use piece of L bracket , no lesser thickness than 5mm

take care that "flying" gate resistor is near gate pin of 2SK180 ; good practice is to heatshrink it with wire , that way it's sturdier
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Old 11th November 2018, 12:46 AM   #705
sontero is offline sontero  Italy
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2SK180 pin identification
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Old 11th November 2018, 01:03 AM   #706
sontero is offline sontero  Italy
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Quote:
Originally Posted by Zen Mod View Post
open these red jumpers , if you didn't already set buffers
naturally......you explained it clear...but...I do not want to miss the jumpers .... I left them for this

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do you know Ugs for your 2SK180 , for Iq in range of 1A8-2A ?
no.....but maybe I can find it in the documentation I have

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of course that you need to find a way of mounting 2SK180 - use piece of L bracket , no lesser thickness than 5mm
I already have a 4mm L bracket available.

Quote:
take care that "flying" gate resistor is near gate pin of 2SK180 ; good practice is to heatshrink it with wire , that way it's sturdier
good practice
thanks a lot ZM...my master

Last edited by sontero; 11th November 2018 at 01:05 AM.
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Old 11th November 2018, 01:06 AM   #707
Zen Mod is offline Zen Mod  Serbia
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ook the documents , except if they're notes of exact measurements

best to have them checked , by procedure I gave in one of threads ......

to repeat - pretty much everything from (minus) few volts to -3V7 will work as charm
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Old 11th November 2018, 01:33 AM   #708
sontero is offline sontero  Italy
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characteristic curves obtained from Jama instrumentally supplied by SIT in attach.

In any case if you can give me a link where I can find the correct procedure I thank you ..... but I ask you: how should I then do the calibration?
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Old 11th November 2018, 08:14 AM   #709
noelectrix is offline noelectrix  Europe
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Hi Sontero, explanation and schematic in post #81 in this very thread,
best
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Old 11th November 2018, 08:20 AM   #710
noelectrix is offline noelectrix  Europe
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i saw D1+D2 being stuffed on your boards, and I remember them as leftouts in the Sissy circuit,
but wait for the Pros to respond on this, Im troublemaker chicken : )

"..... but I ask you: how should I then do the calibration?"

you dont do calibration, its just for veryfying that Sit is within (optocoupler?) window

Last edited by noelectrix; 11th November 2018 at 08:23 AM.
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