Ice Warning And Light Reminder Circuit

This is a design circuit for very simple ice warning and lights reminder electronic. This device will tell a driver if his lights should be on and will warn him if the outside temperature is nearing zero by lighting a LED and sounding a buzzer. This is the figure of the circuit;

Using the VR1 you can adjusts sensitivity for temperature and using VR2 you can adjust sensitivity for the light. Both thermistor and LDR should be well protected. More high gain NPN transistors will work for this electronic project. For this electronic project you can use BC108 type transistor or some other NPN high gain transistor. This ice warning and lights reminder electronic project must be powered from a 12 volt DC power supply circuit.