8
2
10.6 Micro-Controller Board Detailed Circuit Descriptions
Complete circuitry is shown on schematic 834u-070 sheet 1 thru 7.
10.6.1
Micro-Controller
The micro-controller executes the analog to digital conversion on the voltage across the
load. Also all other processes, such as range selection, HLC relay switching, LEDs
activation and so on.
Refer to schematic 834u-070 sheet 1.
10.6.2
Over-Voltage Protection
The resistor R9 and diode D1 thru D4, form the Over-Voltage protection circuitry. This
block limits the input voltage to only ±7V if an extreme overload occurs.
Refer to schematic 834u-070 sheet 1.
