3 ms·

Until MegaCorp comes along and slaps him with a patent infringement lawsuit, of course. I'm pretty sure there are a large number of patents around amplifiers of

• savrajsingh 15y ago
  Most, if not all of those patents are expired (20+ years old). Once a patent expires, it's in the public domain and can't be re-issued or re-assigned. So yeah, overly cynical in this case. :)
• pjscott 15y ago
  This is actually a pretty simple op-amp circuit. The tricky amplifier stuff is all in the OPA2107 chip; everything else is either part of the power supply, or a straightfoward arrangement of resistors and capacitors to get the op-amp to do the right thing. The really cool part here is the assembly. That thing is very pretty.