Materials made of metals will possess the property of electrical conductivity. An electrical conductor allows electric charge to flow through it. Silver is the most electrically conductive element. It is followed by Copper, Gold, Aluminum,...
A door opening alarm circuit is an indicator or a security alert device which activates while opening the device attached door. And the alarm remains ON as long as the door is kept open....
Solenoid Valve A solenoid valve is an electromechanical valve used to control the flow of fluids. It has a simple valve Open and Close mechanism operated by a solenoid. Solenoid valves are widely used in...
An automatic irrigation is a concept of controlled watering of plants without any manual operations, so as to maintain a water level ideal for its cultivation. For an automatic plant watering system, we can adopt various...
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AC to DC Voltage Doubler Circuit A voltage doubler is a circuit which produces an output voltage which is double of the applied input voltage. The below diagram is an AC to DC voltage...
A touch switch circuit operates with a touch action of an object or sensible material. It is used in hobby devices to high end consumer electronics for various applications. Touch switch circuit using transistor The...
A tone generator circuit can be used for various applications such as alarms, bells, indicators, etc. A tone generator consists of a square, triangle, saw tooth periodic wave generator circuits, commonly square wave generators. Such periodic...
Amplitude shift keying (ASK modulation) Amplitude shift keying is a modulation technique in digital communication. It is a form of amplitude modulation that represents the digital data in discrete amplitude levels. For a binary...
A continuity tester is a device used to determine the existence of an electrical connection between two points. It can indicate whether a wire, cable or circuit is electrically closed or not between the...
These circuits can be used for different automatic light sensing projects including automatic night lamp, automatic street light controller, dark sensor circuits, etc. Automatic night lamp circuit using IC 555 An automatic night light circuit...
