We just need to arrange them in to a circuit! First we need power, man – this symbol here is a cell, or battery. That one’s a motor – we don’t need that one. But that’s a light bulb – ...

Circuit symbol: the diode symbol consists of a triangle pointing towards a line. The triangle represents the anode, and the line represents the cathode. Forward-biased diode: an ideal diode ...

Below is a circuit diagram for a greenhouse fan. When the greenhouse becomes too hot (above 27 degrees Celsius), a motor fan will switch on to cool the greenhouse down. the microcontroller has ...