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  • It?s SwissFlow FlowSensor, Not a Swiss Roll!

    2014-11-13 19:15:0564

    Today, we are going to have a further look on this SwissFlow FlowSensor. Let's me describe the details or functions for the components inside this proj...

  • PHOTOCELLS_PROVIDE_NOISE_FREE_AUDIO_KEYING

    2014-11-13 18:31:3067

    Photoresistors R5 and R6 isolate control function from signal circuit to avoid switching transients. S1 may be replaced by automatic pulsing circuit.-A...

  • Simple humidity detector

    2014-11-13 16:55:25133

    The main (and only) job of this circuit is to activate a buzzer or a relay, each time the level of humidity takes a specific value. Main stage is a mem...

  • Level sensor for cryogenic fluids

    2014-11-13 15:59:38132

    The sensor circuit is adaptable to different liquids and sensors. The constant-current source drives current through the sensing probe and a fixed resi...

  • Heartbeat Sensor (Tranduscer) CIRCUIT (2N2222)

    2014-11-13 15:39:07708

    To build a heart-beat transducer not as difficult as imagined. Circuit below shows a simple heart-beat transducer. This circuit made from an infrared p...

  • Mutiple Waveform Generator Circuit

    2014-11-13 14:43:0398

    As shown in the figure, the circuit can produce and output square wave, triangle wave and sine wave.It is especially suitable for electronic lovers and...

  • LOW_COST_HUMIDITY_SENSOR

    2014-11-13 13:32:0782

    The sensor is an RC oscillator in which a water-absorbent plastic film is the insulator in the capacitive element. The capacitance of the film increase...

  • A Lego robot show double rotation sensor principle

    2014-11-13 13:23:0975

    This article describes a Lego robot double rotary sensor principle show. Please read schematic diagrams to combine. I usually use an electric motor is ...

  • The simplest Metal detector with one BC548

    2014-11-13 11:10:19168

    This is the circuit diagram of a low cost metal detector using a single transistor circuit and an old pocket radio..This is nothing but a Colpitts osci...

  • EMF radiation Sleeping Aid

    2014-11-13 08:35:17140

    Many people experienced sleeping well in natural surroundings, into a tent or a wooden hut. This fact is due not only to the healthy atmosphere but als...

  • Sensitive Geomagnetic Sensor circuit

    2014-11-13 08:02:12110

    This is a rather sensitive circuit which will detect minute variations of a magnetic field, particularly the Earth magnetic field. The principle is bas...

  • Proximity Sensor Warning and Alarm I Circuit

    2014-11-13 03:50:39108

    A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact.A proximity sensor often emits an electromagn...

  • Magnetic proximity sensor / detector

    2014-11-13 01:44:43227

    Here is an interesting circuit for a magnetic proximity switch which can be used in various applications.The magnetic proximity switch circuit, in prin...

  • Inductive proximity sensor operation circuit

    2014-11-12 23:10:5478

    Inductive proximity sensor operation circuitProximity sensor is a kind of device which can perceive objects close to it . It uses sensibility of the di...

  • Two-Wire Temperature Sensor(LM334)

    2014-11-12 22:08:20119

    This article describes the Two-Wire Temperature Sensor (LM334). The principle is very simple, very practical. The circuit components can help you under...

  • Infra-red Level Detector with 555

    2014-11-12 21:00:32130

    Useful for liquids level detection and proximity devicesUp to 50 cm. range, optional relay operation. This circuit is useful in liquids level or proxim...

  • Water sensor circuit using 555 timer

    2014-11-12 20:35:3585

    555 timer circuits The water sensor circuit is based on a 555 timer circuit and come common electronic components. The water sensor is made by two meta...

  • The switch circuit with functions of self-lock (auto keeping

    2014-11-12 16:53:51162

    In the figure is a switch circuit with functions of self-lock (auto keeping). The 3 photoelectric couplers fulfill functions of trigger, self-lock and ...

  • Electronic I CHING Detector

    2014-11-12 15:05:06115

    This circuit is the electronic emulation of the I Ching, a form of divination originating in China. In the classical form, the response is obtained by ...

  • The computer connector LEV coupling circuit of photoelectric

    2014-11-12 11:23:0266

    In computer systems, all kinds of semi-conductor logic circuits are connected with consciousness, and the different logic circuits requires different p...

  • SEN-1327 LPG Gas Sensor Module

    2014-11-12 09:38:5585

    The SEN-1327 LPG Gas Sensor Module is designed to enable LPG detection interface to Microcontroller without ADC Channels. It allows to determine when a...

  • Across The Track Infrared Detectors

    2014-11-12 08:30:5588

    This page presents information on infrared - `Across The Track` train detection circuits. The circuits are designed around the LM339 comparator chip an...

  • Beam Blocking Alarm Circuit

    2014-11-12 08:05:2690

    As shown in the figure, when the photosensitive resistor R4 is irradiated, the resistance is low, thus, transistor VT1 and one-way thyristor SCR are cl...

  • Visible Light Sensor LX1970 Measurement of White Light Circu

    2014-11-12 01:34:4675

    As shown for the measurement of white light circuit constituted by the visible brightness sensorLX1970. By the UCC, the current source and the white LE...

  • ELECTRONIF_THERMOSTAT

    2014-11-11 23:58:2172

    A diode, such as a IN4148, has a typical -2m V/℃ temperature coefficient at a 1 mA diode cur-rent. Q1 and Q2 form a constant current source. D1 is th...

  • Introduction Biological proximity sensor

    2014-11-11 19:13:4177

    Here we introduce a proximity sensor creatures. Combine text plug will improve your understanding of efficiency. Figure 1 is a circuit needs assessment...

  • humidity sensor circuit

    2014-11-11 14:55:0073

    This circuit combines two LTC1043s with a based humidity transducer in a simple charge-pump based circuit. The sensor specified has a nominal 400 pF ca...

  • Servo Control Integrated Circuit

    2014-11-11 12:31:2781

    MN67641VDGF IC pin functions and dataMN67461VDGF IC's internal circuit block diagram and its typical application circuit.MN67461VDGF is servo control I...

  • Unidirectional motion sensor

    2014-11-11 11:58:2776

    This circuit detects an object passing in one direction but ignores it going the opposite way. Two sensors define the sense of direction. The object bl...

  • Resistor and capacitor (LC) circuit

    2014-11-11 10:33:5770

    If a circuit uses both inductors and capacitors at the same time, they combine to form the inductor - capacitor (LC) resonant circuit, also known as en...

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