Welcome to Charles Rethman's Portfolio

Please select a topic to view

Electronic Design

Dual Battery Controller, Page 2

This is the schematic for the battery meters. The battery meterss are designed to give a quickly observed picture of each battery's condition. It works by feeding the raw battery voltage levels to the bar display drivers IC6 and IC7. The high-voltage and low-voltage thresholds can be trimmed with two variable resistor trimmers. The threshold voltages are stabilised by a zener diode D15 and voltage spikes are suppressed by capacitors C6, C7, C8 and C9.

Maps

Hazard Affected Areas

The hazard affected areas are the areas where the VCI is below 35%. This map shows the aggregated hazard affected areas across the country.