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  • Tiny Dew Sensor(LM358N)

    2014-11-02 17:23:54110

    This article describes the Tiny Dew Sensor (LM358N). The principle is very simple, very practical. The circuit components can help you understand bette...

  • TMP01 Celsius Scale Temperature Sensor

    2014-11-02 16:58:5084

    The schematic diagram described here is a TMP01 Celsius Scale Temperature Sensor circuit. This circuit is used to convert the VPTAT output voltage that...

  • Fabricate a high-resolution sensor-to-USB interface. Part 1

    2014-11-02 07:43:2578

    A precision analog acquisition system fits in your pocket. Zoltan Gingl, University of Szeged, Szeged The circuit in this Design Idea combines a mixed-...

  • Money detector circuit

    2014-11-02 07:18:4696

    This voice alarm money detector circuit can be used to identify the counterfeit currency, it uses the sound of Please note that this is the counterfeit...

  • All-round tracking solar electronics circuit

    2014-11-02 07:00:5372

    Working principle: the solar device which uses the photovoltaic cells needs to have the sun tracking function, or the efficiency will be greatly reduce...

  • Fahrenheit Thermometer Using LM35 Temperature Sensor IC

    2014-11-02 06:47:0477

    If you have a digital voltmeter, or any voltmeter with millivolt resolution and high input impedance, then you can use this temperature-to-voltage adap...

  • Fluid level sensor circuit using 741 op amp

    2014-11-02 05:22:20186

    Sensors This fluid level sensor circuit is based on a simple common 741 op amp IC used as an comparator . When that two fluid level sensor are not plac...

  • Visible and Infrared Light Detectors

    2014-11-02 02:22:21200

    The sensors used are silicon phototransistors and Cadmium Sulfide (CdS) photocells. Both of these sensors allow less current to flow when they are dark...

  • BRIDGING_TOUCH_PLATE_SENSOR__

    2014-11-02 01:23:3165

    In this circuit, two 567 tone decoders are used. One is an oscillator, the other is a detector.Bridging TP1 and TP2 causes U2 to receive UI's signal, w...

  • Permeating Optical Interrupter Structure And Circuit

    2014-11-02 01:12:3178

    The figure shows the two permeating interrupter structures.Their light-emitting and optical components are separated by a certain interval, and the mid...

  • Metal detector with CD4011

    2014-11-02 00:25:51263

    The working principle of this cheap and easy to build metal detector circuit consists in mixing two equal frequencies which causes a low-frequency inte...

  • Relative Humidity Sensor Digitizer-Time Domain Bridge Based

    2014-11-01 23:11:4770

    View Full Size Image View Original Application Note Humidity Transducer Digitizer Has Grounded Sensor, 1% Accuracy; Trim Scheme Allows Low Tolerance Se...

  • Laser beam Sensor

    2014-11-01 22:43:29126

    The sensor has two parts: a transmitter and a detector. They can be placed on opposite sides of your victim's path, or they can both be on the same sid...

  • Magnetic Proximity Switch

    2014-11-01 22:12:15139

    There is practically no house without an overhead tank (OHT). People who use electrically-operated water pumps for filling the OHT find it very inconve...

  • Acoustic Sensor (LTC1487CS8)

    2014-11-01 20:30:4675

    This article describes the Acoustic Sensor (LTC1487CS8). The principle is very simple, very practical. The circuit components can help you understand b...

  • Thyristor driving circuit

    2014-11-01 18:42:5887

    This circuit is composed of the novel pyroelectric infrared sensing specific device TDH98072. This control circuit has the advantages of simple circuit...

  • Water level indicator / sensor

    2014-11-01 17:50:34107

    Description of water sensor: in most houses, water is first stored in an underground tank (UGT) and from there it is pumped up to the overhead tank (OH...

  • Cheap Rain Detector Sensor

    2014-11-01 17:08:5675

    With the help of this Cheap Rain Detector Sensor you can sense the occurrence of rain giving you time to close your windows and be prepared for the rai...

  • Acoustic_thermometer

    2014-11-01 16:47:1572

    Acoustic thermometer. This circuit relies on the principle that the speed of sound varies predictably with temperature in a known medium. The sensor us...

  • The TV auto brightness adjusting circuit composed of LDR

    2014-11-01 13:44:5876

    The TV auto brightness adjusting circuit composed of LDR See as the figure, the LDR is connected with the middle head of the contrast potentiometer. By...

  • INTERFACING_RESISTIVE_TRANSDUCERS

    2014-11-01 13:44:1768

    All types of resistive-element transducers, such as servo-pots, level indicators, thermistors, photosensors, strain gages, and so on, can be directly c...

  • PIC16F628A & Temperature Sensor LM35DZ

    2014-11-01 12:02:3889

    Previously it was shown how the temperature sensorLM35DZnow will be drawn out to make a small project where using a microcontroller will take reading t...

  • Open source Wireless sensor platform Waspmote (2SC945)

    2014-11-01 11:59:13333

    This article describes the Open source Wireless sensor platform Waspmote (2SC945). The content is very simple, very helpful. Components in this article...

  • Infrared approach detector / sensor

    2014-11-01 11:58:27118

    Basic operation of the monitor attached to the circuit is to detect objects (obstacles), at distances ranging from a few millimeters to and a few centi...

  • DIFFERENTIAL_TEMPERATURE_SENSOR

    2014-11-01 11:55:1778

    Respands to difference in temperatures of MTS102 silicon high-precision temperature sensors having range of-40℃ to+150℃ With both sensors at same...

  • Digital tachometer circuit based on the magnetic sensor

    2014-11-01 11:40:39263

    The digital tachometer circuit is as shown in the figure. It is composed of the disk with the permanent magnet, the Hall integrated sensor, the selecti...

  • Sensor circuit 103: Ion detector circuit

    2014-11-01 08:29:3376

    Note: T1 is transformer, *1 8Ω speaker; D1, D2, D3 are MUR1100; U1 neon. LT1073 is adjustable DC-D Figue 5-99 α, β, γ particle detector with 1.5V b...

  • LM324 Water Level Sensor/Indicator

    2014-11-01 07:38:34259

    This is Hot Water Level Indicator circuit. This circuit can be used to monitor level of hot water in a tank. This circuit is simple and inexpensive. th...

  • Coil Coupled Metal Detector

    2014-11-01 03:10:44389

    A Coil Coupled Operation Metal Detector made from readily obtainable components and using an ordinary medium receiver as a detector. The metal detector...

  • Isolated Voltage Sensor With IN4148 IC

    2014-11-01 03:10:1576

    IN4148 is a silicon epitaxial planar switching diode. The reverse voltage is 75V. Description: This circuit bellow shows a simple voltage-controlled os...

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