Simple LED Volt Meter


A simple LED Volt Meter using Zener diodes as switches. If it is connected to a 12 Volt battery it shows the following indications.   Flash LED Blinks – Above 13 volt – Fully charged Green LED lights – Above 11.8 V Yellow LED lights – Above 11.5 V Red LED lights – Above 10.6 V If all LEDs light, battery voltage is above 13 … Continue reading Simple LED Volt Meter