DirtyErnie
Well-Known Member
Yeah, LTP. Some of these devices might not enjoy dropping ~100v, even if it's only a couple ma.
experience with MOSFET plate loads?
- Thread starter gadget73
- Start date
I wouldn't sweat it. In my 6L6GC hi-fi amp where I use this, the 10M45S is dropping ~135V @ 9mA and barely breaking a sweat. I put some (very) small heat sinks on them.
Built the CCS board tonight. Sure wish my eyesight was better 
Anyway, it seems to work correctly. I have the K pin connected to ground via a 10 ohm 1% resistor and 1K trim pot. I hooked it up to a 12V wall wart and adjusted the pot until I got 0.090V across the 10 ohm resistor for my target of 9mA of constant current. From the chart on 10M45 data sheet, I ball-parked 300 ohms of resistance required to set 9mA, and after setting the current to 9mA I measured 329 ohms between K and ground, so it behaved just as I expected.
Of course, I realized after I finished it that I got one of...
Anyway, it seems to work correctly. I have the K pin connected to ground via a 10 ohm 1% resistor and 1K trim pot. I hooked it up to a 12V wall wart and adjusted the pot until I got 0.090V across the 10 ohm resistor for my target of 9mA of constant current. From the chart on 10M45 data sheet, I ball-parked 300 ohms of resistance required to set 9mA, and after setting the current to 9mA I measured 329 ohms between K and ground, so it behaved just as I expected.Of course, I realized after I finished it that I got one of...