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Music transfer by IR by amplification
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RF Remote Control Encoder and Decoder Chip Pinouts Explained
Making your own universal remote control systems today is very easy. Such procure the relevant chips, assemble them and here goes, your hi-...
Simple Delay Timer Circuit - How to Make and Calculate
There are many occasions when a switching delay is required. One way of achieving this is to use an RC network and an inverter (see figure 1...
Brushless DC Motor Driver Circuit Diagram
Use of brushless DC motors (BLDCs) is on the rise. But their control usually requires rotor-position information for selecting the approp...
Touch Activated Alarm System using 555 IC
The 555 can be LM,NE or MC(cmos) type.C1/C2's working voltage should be increased to 25V if you decide to go with a 12V power source . R...
IC 555 Pin out Specs Explained
In several circuits, wherever it's required generation of regular events, you'll realize this integrated circuit's importance...
Simple Gas Smoke Detector Circuit Diagram
This is the Simple Gas Smoke Detector Circuit Diagram. In the presence of smoke or gas, the ac output voltage increases and becomes rect...
Simple Mains High Low Voltage Cut-off Circuit
In this circuit we'll learn about a simple high low voltage cut off circuit with alarm which can be used for protecting all 220V or 120...
Intelligent Water Pump Controller with Water-level Display
Most of the circuits for multi-level indication/control of water in tanks employ a bunch of wires running between the circuit and the over...
Infrared sensor
This circuit is one of the most basic and popular sensor modules . In electronics, this sensor is analogous to human’s visionary senses whic...
How to build LED 12 Volt Lead Acid Battery Meter
In the circuit below, a quad voltage comparator (LM339) is used as a simple bar graph meter to indicate the charge condition of a 12 volt, ...