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NOISE_BRIDGE
2014-11-03 21:45:0195Used with communication receiver to measure impedance at antenna terminals or at end of transmission line, as required for adjusting antenna matching a...
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Precision-threshold-detector
2014-11-03 20:51:10128This 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...
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Basic IR Detector/Emitter
2014-11-03 20:40:33187This is a very basic infrared detector/emitter circuit. One major downside of this circuit, is that ambient infrared light will interfere with its dete...
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20 kbps light receiving circuit diagram
2014-11-03 19:51:46206The 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...
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Precise USB2.0 temperature sensor with minimum components
2014-11-03 19:14:0272The idea of reading temperature via USB is very simple. Construction is reliable, precise and requires few components. Circuit is very simple as there ...
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GAS_SMOKE_SENSOR
2014-11-03 19:03:1078Sensor is based on selective absorption of hydrocarbons by N-type metaloxide surface. Heater in sensor burns off hydrocarbons when gas or smoke disappe...
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Diode Sensor For Lasers
2014-11-03 17:39:1483Laser-receiver circuits must bias their avalanche photo diodes (APD) to achieve optimal gain. Unfortunately, an APD `s gain depends on the operating te...
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Infrared ＂People＂ Detector
2014-11-03 16:23:481072This 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...
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MN12C2O1D Memory Integrated Circuit
2014-11-03 15:44:5063MN12C2O1D is memory integrated circuit produced by Matsushita. It usually forms large screen color TV's remote control system with MN15287KWEC31 Micro-...
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User-Programmable Hall-Effect Sensor(A1356)
2014-11-03 14:33:4496This article describes the User-Programmable Hall-Effect Sensor (A1356). The principle is very simple, very practical. The circuit components can help ...
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Precision_temperature_regulator_for_regulating_temperature_o
2014-11-03 12:30:0370Precision temperature regulator for regulating temperature of ovens, hot plates, fluids, air and gases. It can control up to 600 watts and has adjustab...
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SOT Temperature Sensors with Period/Frequency Output
2014-11-03 11:56:0268This 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 ...
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The plate shape chloride steel humidity sensitive resistor c
2014-11-03 11:15:5776The 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...
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the constant voltage-driven bridge sensor circuit constitute
2014-11-03 10:26:43175Circuit 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...
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One Direction Motion Sensor
2014-11-03 10:13:41121This 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...
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The connector circuit of photoelectric couplers
2014-11-03 08:34:5569See as the circuit, the photoelectric coupler 4N25 performs the functions of coupling pulse signals and separating single chip computer 89C51 system fr...
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Fluid lever sensor circuit design using ac signal
2014-11-03 08:31:09112Sensors 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...
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AD590 based Temperature Sensor
2014-11-03 07:10:30164The 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...
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Capacitive Sensor
2014-11-03 06:51:5190Note: 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...
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Temperature Sensor of Current Transmission Circuit
2014-11-03 05:15:4281The 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...
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Simple BFO Metal Detector
2014-11-03 04:47:40402A 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...
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555 IC Water Level Sensor/Detector Alarm
2014-11-03 04:25:12117This schematic diagram below shows a 555 IC water level sensor/detector alarm circuit. This circuit is powered through the emitter current of the BC109...
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Two-component metal detector
2014-11-03 03:00:05148The 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 ...
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Ratiometric Sensor to Pulse Width, Non-Inverting Response
2014-11-03 00:03:12105View Full Size Image View Original Datasheet The LTC6992 is a silicon oscillator with an easy-to-use analog voltage-controlled pulse width modulation (...
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Square Wave and Sine Wave Generator Circuit
2014-11-02 23:35:1793As 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...
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Temperature Sensor
2014-11-02 23:28:2985The 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...
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Characteristics of sensors and transducers
2014-11-02 21:56:1083Sensor ir transducer is a device which converts one type of energy to another – usually electric. They are used for various purposes including measur...
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Capacitance Based Humidity Sensor HS1101
2014-11-02 18:45:54232FeaturesUsing a 555 timer to reflect changes in capacitanceSampling a microcontroller input to determine frequencyIntroductionMany sensors use capacita...
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Remote Sensor System Pre-Amp
2014-11-02 18:37:5072Remote 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...
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CdS photoresistor for electronic metering device circuit
2014-11-02 17:51:5479As 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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