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  • NOISE_BRIDGE

    2014-11-03 21:45:0192

    Used with communication receiver to measure impedance at antenna terminals or at end of transmission line, as required for adjusting antenna matching a...

  • Precision-threshold-detector

    2014-11-03 20:51:10114

    This circuit requires low noise, low and stable offset voltages, high open loop gain, and high speed. These requirements are met by the HA514 7. The st...

  • Basic IR Detector/Emitter

    2014-11-03 20:40:33165

    This is a very basic infrared detector/emitter circuit. One major downside of this circuit, is that ambient infrared light will interfere with its dete...

  • 20 kbps light receiving circuit diagram

    2014-11-03 19:51:46170

    The circuit diagram uses optical transistor to drive three pieces of crystal amplifier tubes, generate TTL output, the data rate can reach 20,000 Kbp/s...

  • Precise USB2.0 temperature sensor with minimum components

    2014-11-03 19:14:0266

    The idea of reading temperature via USB is very simple. Construction is reliable, precise and requires few components. Circuit is very simple as there ...

  • GAS_SMOKE_SENSOR

    2014-11-03 19:03:1077

    Sensor is based on selective absorption of hydrocarbons by N-type metaloxide surface. Heater in sensor burns off hydrocarbons when gas or smoke disappe...

  • Diode Sensor For Lasers

    2014-11-03 17:39:1475

    Laser-receiver circuits must bias their avalanche photo diodes (APD) to achieve optimal gain. Unfortunately, an APD `s gain depends on the operating te...

  • Infrared "People" Detector

    2014-11-03 16:23:48690

    This circuit uses an Amperex pyroelectric IR sensor, an LM324 op amp (configured as a high-gain amplifier in the 0.3-to 5-Hz range), and a window detec...

  • MN12C2O1D Memory Integrated Circuit

    2014-11-03 15:44:5063

    MN12C2O1D is memory integrated circuit produced by Matsushita. It usually forms large screen color TV's remote control system with MN15287KWEC31 Micro-...

  • User-Programmable Hall-Effect Sensor(A1356)

    2014-11-03 14:33:4478

    This article describes the User-Programmable Hall-Effect Sensor (A1356). The principle is very simple, very practical. The circuit components can help ...

  • Precision_temperature_regulator_for_regulating_temperature_o

    2014-11-03 12:30:0368

    Precision temperature regulator for regulating temperature of ovens, hot plates, fluids, air and gases. It can control up to 600 watts and has adjustab...

  • SOT Temperature Sensors with Period/Frequency Output

    2014-11-03 11:56:0266

    This is a low-current temperature sensors with a single-wire output. The number of pins that needed to interface with a microprocessor is minimized by ...

  • The plate shape chloride steel humidity sensitive resistor c

    2014-11-03 11:15:5773

    The plate shape chloride steel humidity sensitive resistor circuit is as shown in the figure. You can dip the Lithium chloride solution on the non-alka...

  • the constant voltage-driven bridge sensor circuit constitute

    2014-11-03 10:26:43153

    Circuit functionThis is a drive, detection circuit that is suitable for use bridge sensors.It is Driven by constant voltage, the voltage is ± 2.5V, if...

  • One Direction Motion Sensor

    2014-11-03 10:13:41111

    This is a one direction motion sensor circuit. This motion sensor circuit is used to detects an object passing in one direction, ignoring an object tha...

  • The connector circuit of photoelectric couplers

    2014-11-03 08:34:5568

    See as the circuit, the photoelectric coupler 4N25 performs the functions of coupling pulse signals and separating single chip computer 89C51 system fr...

  • Fluid lever sensor circuit design using ac signal

    2014-11-03 08:31:0985

    Sensors A very simple fluid lever sensor can be designed using this circuit diagram . This fluid level sensor circuit is designed for using an ac sensi...

  • AD590 based Temperature Sensor

    2014-11-03 07:10:30104

    The voltage at the point 1 of R4 will be :Vo=( 1 ( 10K/22K)) * Vref = 3.63V as nominal Vref is 2.5V.AD590 is a current source which gives 1 uA / kelvin...

  • Capacitive Sensor

    2014-11-03 06:51:5186

    Note: For proper operation, circuit ground must be connected via a small value, high voltage-rating capacitor to one side of the mains supply socket. T...

  • Temperature Sensor of Current Transmission Circuit

    2014-11-03 05:15:4275

    The resistance in the cirtuit is metal film one. Itsaccuracy is better than 1% and temperature coefficient TCis less than ±50X10-6/K.The measuring ran...

  • Simple BFO Metal Detector

    2014-11-03 04:47:40246

    A Very Simple `Beat Frequency Oscillator` type of Metal Detector.These are about the Simplest of all Metal Detector types,But still quite useful for ma...

  • 555 IC Water Level Sensor/Detector Alarm

    2014-11-03 04:25:1299

    This schematic diagram below shows a 555 IC water level sensor/detector alarm circuit. This circuit is powered through the emitter current of the BC109...

  • Two-component metal detector

    2014-11-03 03:00:05133

    The circuit shown must represent the limits of simplicity for a metal detector. It uses a single 4093 quad Schmitt NAND IC and a search coil -- and of ...

  • Ratiometric Sensor to Pulse Width, Non-Inverting Response

    2014-11-03 00:03:1294

    View Full Size Image View Original Datasheet The LTC6992 is a silicon oscillator with an easy-to-use analog voltage-controlled pulse width modulation (...

  • Square Wave and Sine Wave Generator Circuit

    2014-11-02 23:35:1768

    As shown in the figure is a square wave and sine wave generator. A clock generator is composed of an ordinary inverse gate and a few components only, w...

  • Temperature Sensor

    2014-11-02 23:28:2979

    The AD537 uses its two reference outputsa€”one fixed at 1 V, the other of which varies with temperature (1 mV per ?°K). At 0?°C, the 1-V referenc...

  • Characteristics of sensors and transducers

    2014-11-02 21:56:1080

    Sensor ir transducer is a device which converts one type of energy to another – usually electric. They are used for various purposes including measur...

  • Capacitance Based Humidity Sensor HS1101

    2014-11-02 18:45:54170

    FeaturesUsing a 555 timer to reflect changes in capacitanceSampling a microcontroller input to determine frequencyIntroductionMany sensors use capacita...

  • Remote Sensor System Pre-Amp

    2014-11-02 18:37:5068

    Remote sensor might cause a trouble if its a passive type, has very low power output, and should be connected with relatively long cables. By supplying...

  • CdS photoresistor for electronic metering device circuit

    2014-11-02 17:51:5474

    As in block cameras, CdS photoresistor can be used as electronic metering device. The light irradiation passes through the orifice in the CdS photoresi...

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