LDM
00:00 - Intro
00:38 - Teardown
05:21 - Test
08:01 - Piecewise amplifier
11:30 - Reverse engineering
11:41 - Power Supply
12:10 - Reference voltages
12:35 - Main circuits
13:00 - Front-end amplifier
14:21 - Piecewise Amplifier circuits
Connector Pinout:
1-2: Lighting 5Vrms
3-4: 115Vac 400Hz
5: Thermocouple (-)
6: Thermocouple (+)
7: Mechanical ground