/diy/ - Do It Yourself

>>1897497
Then because of these connections, some transistors are permanently turned off (or their gates left floating or pulled to GND, so basically always off), giving us this.

Kinda underwhelming, just a hex MOSFET array. But since they use one of them for feedback I suppose it works fine as a linear resistor to some extent. Still, I think those MOSFETs are tied to a central ground rail, as evidenced by the AC coupling happening over at R7 >>1897282, their body diode giving asymmetric results would be something I'd be concerned about, unless they just keep the voltage level significantly low enough.