An LDR changes its resistance when light falls on it and alight detector circuit uses this property in a Wheatstone bridge. One side of the bridge contains the LDR and a fixed resistor connected in series, while the other side contains a potentiometer and another fixed resistor connected in series. Furthermore, the circuit applies a […]
Sensors and Detectors
Simple Tilt Sensor Switch Circuit
Simple Tilt Sensor Switch Circuit control ON/OFF of LED or buzzer, also this tilt sensor work like small seesaw switch. In this circuit , inside a sensor there can be a small metal ball. When sensor stand straight the ball touch two points and then the current can pass and when sensor tilts the ball […]
Simple Footstep Electricity Generator Circuit using Piezo Transducer
To begin with, we use piezoelectric transducers in a footstep power circuit because they convert foot pressure into small electrical power. Furthermore, piezoelectric effect means crystal which makes electricity when press or stress happen and if we press special crystal a small current comes out. Hence, Simple Footstep Electricity Generator Circuit uses parts like piezo […]
Simple Missing Pulse Detector Circuit
Simple Missing Pulse Detector Circuit is an electric circuit; it finds when pulse is missing in pulse signal. Most time it uses 555 timer IC and work like monostable multivibrator; when it gets trigger it gives one output pulse and if next pulse does not come in time then timer is in no reset. Hence, […]
Mains AC Power Supply Failure Buzzer(Alarm) Circuit
Mains AC Power Supply Failure Buzzer(Alarm) Circuit is small device; it makes sound (buzzer) when AC power goes OFF. Furthermore, it helps us to know power gone and is useful if we have important machine to know power goes at night; also it uses one switch called relay. When power is on, the relay operates […]
Simple Electronic Candle Circuit using LDR
This article for Simple Electronic Candle Circuit using LDR is fun and easy project to make fake candle with LED, as it uses LDR to make LED flicker like real flame and turns ON when its dark; also LDR controls the LED. Furthermore, in bright light the LDR has high resistance so LED stays OFF […]