.... I just use the SK170 and I like to try a substitute with higher Gfs.
This is the graph from 2sk170's datasheet. It shows a correlation between Idss and transconductance. Look at it carefully and be aware that 2sk170 comes in three Idss groups (GR, BL and V), ranging from 2.6mA to 20mA...
Attachments
Last edited:
They price it 11.5 CHF (11.4 US$) a piece???
Same Yfs as BF862 but 7.5 times higher Ciss and 5 times higher Crss with 40 times higher price - not a good deal at all...
Last edited:
That justifies anything...but they're ooking fancy
What's that ?....Oyster's Brat 2 ?
Does it look like this :
Attachments
Last edited:
The World Is My Oyster lyrics
[Mostly instrumental]
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
[Mostly instrumental]
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
The world is my oyster
Ha ha ha ha ha ........
Yeah yeah
a piece?
No Pain, no Gain.
(i've always wondered why having oysters is considered foreplay)
Pearl Two Problem
Guys, just finished the pearl two using Pass boards and I have a problem.
Power supply is in a separate box. It checked out ok. But when I connect it to the circuit chassis strange things happen. On turn on things sound fine but within a couple of minutes the volume fades away.
When I checked out the voltages, the positive supply rail at R4 starts dropping from 24.06 volts to around 5.74 volts in about two minutes. The negative rail goes up to 62.1 volts.
This happens with both boards whether one or both are connected to the power supply.
Any suggestions? I have checked the layout and it looks ok. I'm not a techie so I'm a little lost.
Thanks
Rudy
Guys, just finished the pearl two using Pass boards and I have a problem.
Power supply is in a separate box. It checked out ok. But when I connect it to the circuit chassis strange things happen. On turn on things sound fine but within a couple of minutes the volume fades away.
When I checked out the voltages, the positive supply rail at R4 starts dropping from 24.06 volts to around 5.74 volts in about two minutes. The negative rail goes up to 62.1 volts.
This happens with both boards whether one or both are connected to the power supply.
Any suggestions? I have checked the layout and it looks ok. I'm not a techie so I'm a little lost.
Thanks
Rudy
- Home
- Amplifiers
- Pass Labs
- Pearl Two