Do you throw old notebook, newspaper or bills in dustbin? then Wait! What if old waste paper become new fresh sheet in our hand? Yes, it is possible and its quite very easy! This small DIY Paper Recycling Turn Old Paper into New teaches us how to recycle paper at home. This project save trees, […]
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Relay Connections at the Collector and Emitter Sides of a Transistor: Which is Better?
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 […]
Seven Segment Display Circuit: Datasheet, Pinouts And Working
7-segment display show numbers 0 to 9. Sometimes it show small letters. LED make it bright and famous. Now LCD are also come in use. Things like microwave, calculator, washing machine, radio, digital clock use it for numbers. Next we see 7-segment pins for better understanding. Diagram with Pinouts: Seven-segment display have seven light parts. […]
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 […]