Relays are very important in electric circuit for switching ON/OFF. They control big power load using small signal which is very useful. Transistors are often used to control relay for better switching and for less power loss. Relay coil can be ON transistor collector side or emitter side. Choice changes how circuit works with each […]
Tutorials
Home »
Seven Segment Display Circuit: Datasheet, Pinouts And Working
Seven Segment Display Circuit (SSD) is a small device which show numbers easily. It have 7 LEDs shape like 8. Show numbers 0 to 9 and some letters. It is used in clocks, calculators and electronic tools. Two types are Common Cathode (CC) and Common Anode (CA). We should know the difference which will help […]
Hysteresis in Schmitt Trigger Circuit using IC 555
Schmitt Trigger is special type comparator. It gives stable switching even if input signal is noisy or slow. We can use 555 timer IC as Schmitt Trigger. This IC is used in many projects. Schmitt Trigger can give two types of output : normal (non-inverting) and inverted square wave. Next we will learn how to […]
Simple Transistor Relay Driver Circuit
Small switch we call transistor is inside almost all electronic thing. But transistor cannot handle big power by itself. So we have used Simple Transistor Relay Driver Circuit which is like a special adapter for transistor. This help small signal from transistor to control big relay switch. With this we can turn ON or OFF […]