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Photo relay circuit – Circuit Schematic
Photo relay circuit
A photo relay or light activated relay is a circuit which opens and closes the relay contacts according to the light. Here a photo diode is used to sense the li...
Simple peak detector circuit using LM393. Uses minimum components and have good performance – Circuit Schematic
Simple peak detector circuit using LM393. Uses minimum components and have good performance
LM339 based peak detector circuit.Simple and easy to construct. Operates from 5V DC single supply. LM339 is a dual comparator.....
Magnetic proximity switch – Circuit Schematic
Magnetic proximity switch
Here is the circuit diagram of a magnetic proximity switch that finds a lot of applications in many fields. The circuit is based on a magnetic reed switch(S1) a...
Light to Frequency converter – Circuit Schematic
Light to Frequency converter
A simple light to frequency converter circuit with diagram and schematic.Used as Light intensity measurement circuit.Design using TLC555, a cmos version of NE 5...
Liquid/Fluid/Water/Float/Tank Level SwitchCircuit using Relay – Circuit Schematic
Liquid/Fluid/Water/Float/Tank Level SwitchCircuit using Relay
A simple liquid level switch circuit with diagram and schematic.This can also be used as water level switch,fluid level,float level and tank level switch.....
Infrared (IR) Sensor/DetectorCircuit using 555 IC – Circuit Schematic
Infrared (IR) Sensor/DetectorCircuit using 555 IC
An Infrared or IR sensor/detector circuit diagram using 555 IC used mainly as Water level or Liquid level sensor and proximity detector circuit.....
Humidity Tester Circuit Using Sensor – Circuit Schematic
Humidity Tester Circuit Using Sensor
A simple humidity tester circuit using just a LED, transistor, and a few resistors is explaind with a neat circuit schematic.....
Hall Effect switch – Circuit Schematic
Hall Effect switch
The circuit diagram shown here is of a Hall Effect switch. Hall Effect sensor IC DN6848 from Panasonic is the heart of the circuit. The DN6848 has a built-in Ha...
Electromagnetic field sensor circuit – Circuit Schematic
Electromagnetic field sensor circuit
This is a very simple circuit that can be used to sense electromagnetic radiations. The circuit can even detect hidden wrings. A 1mH inductor is used for sensin...
Digital Temperature Sensor Circuit using ADC0804 LM35 and LM317 – Circuit Schematic
Digital Temperature Sensor Circuit using ADC0804 LM35 and LM317
A digital temperature sensor circuit is explained with circuit diagram.ICs ADC 0804,LM35 and LM317 are used in this digital circuit project.....
Air flow detector circuit – Circuit Schematic
Air flow detector circuit
The filament of a incandescent bulb is the sensing part of the circuit. When there is no air flow the resistance of the filament will be low. When there is air ...
Water level sensor circuit: projects for school students – Circuit Schematic
Water level sensor circuit: projects for school students
I have posted wide varieties ofsmall electronic projects onwater level sensor in Circuits Gallery. This is another project for school students to detect the wat...
Water quality checker project simple circuit diagram – Circuit Schematic
Water quality checker project simple circuit diagram
How to measure water purity How to test water quality using a simple electronics project You can perform water purity measurement and water quality analysis usi...
Numeric water level indicator- liquid level sensor circuit diagram with 7 segment display – Circuit Schematic
Numeric water level indicator- liquid level sensor circuit diagram with 7 segment display
Here we define 7 levels in thereservoir. The sensed values are connected to an encoder circuit. The encoder circuit consist of a 74148 IC, which is a 8 line to ...
transceiver-circuits – Circuit Schematic
transceiver-circuits
As I was developing my IR Extender Circuit, I needed to find a way of measuring the relative intensities of different Infra red light sources. This circuit is t...
Sensor – Circuit Schematic
Sensor
The article "Creating a Line Follower Robot with AVR [Censorship]" is a continuation of Line Follower Robot article with a new AVR ATMega8535 samapai phase Line...
Project – Circuit Schematic
Project
The values of LM56 Thermostat project Circuit diagram of R1, R2 and R3 for the points of travel, VT1 and VT2 can be determined using the subsequent equations. T...
Pressure – Circuit Schematic
Pressure
The pressure sensor (MPX4100)MPX4100 is a pressure sensor that is equipped withsignal conditioning circuit and temperature calibrator makes this sensor stable a...
Detector switch circuits – Circuit Schematic
Detector switch circuits
A simple test circuit to fault find audio and radio equipment. Can be used to inject a square wave signal, rich in harmonics, or used with headphones as an audi...
Simple Lightning Detector Circuit – Circuit Schematic
Simple Lightning Detector Circuit
This Do-it-yourself lightning detector ambit can be a abnormally acute changeless electricity detector which can accumulation an aboriginal admonishing of abutt...