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  • Bug Detector Circuit

    2014-11-16 19:52:26257

    The circuit, built around a single integrated circuit (Ul, an MC3403P quad op amp), three transistors (Q1-Q3), and a few support components,.receives i...

  • SENSITIVE_FIELD_STRENGTH_METER

    2014-11-16 18:44:4886

    The two-pole, five-position switch, coils and 365-pF variable capacitor cover a range from 1.5 to 30 MHz. The amplifier uses Darlington npn transistors...

  • Liquid Flow Sensor Device for Automating Fluid Sample Analys

    2014-11-16 17:51:1266

    Liquid flow sensorsis a device which established liquid flow monitoring, liquid handling and liquid dosing, it is for sensing the rate of fluid flow, a...

  • Relay Output Proximity Sensor

    2014-11-16 17:04:21180

    Ql is used as an oscillator around 300 kHz. R9 is set so that the oscillator just begins to run. An object ne ar the antenna will load the circuit down...

  • RF Actuated Keying Monitor

    2014-11-16 16:59:01167

    Sending Morse on a rig without a sidetone is not impossible, but is not particularly pleasant either. This battery-powered monitor has been designed to...

  • Battery Current Sensor: Part 1

    2014-11-16 14:17:2189

    This was developed for a customer who insisted on having a battery current limit fitted to a controller. The principle is to measure the battery curren...

  • LM134-LM10 Thermometer/Temperature Sensor (LM134)

    2014-11-16 13:15:0080

    This article describes the LM134-LM10 Thermometer / Temperature Sensor (LM134). The content is very simple, very helpful. Components in this article ca...

  • An Anemometer Circuit

    2014-11-16 13:13:28145

    I designed up this circuit board because of a request from a visitor to my website. I also assemble the circuit board to Varify the board was correct. ...

  • Current Loop Transmitter For Temperature Sensor

    2014-11-16 10:34:22136

    Current loop interface has been widely used in industrial environment because its robustness. Noise resistance and fail detection capability? made it s...

  • Humidity Sensor

    2014-11-16 06:49:3088

    Introduction Humidity is the amount of water vapor in the air, expressed as a percentage of the maximum amount that the air could hold at the given tem...

  • Piezoelectric Heat Sensor

    2014-11-16 04:53:4291

    Here is anUltrasensitive Heat Sensorto monitor high temperature in Electronic devices. It can be placed inside the electronic gadget that usually gener...

  • Window Switch Sensor Based on Temperature

    2014-11-16 03:14:0068

    Figure 1 The circuit has been designed to produce a window switch with the use of a thermistor for the main purpose of sensing temperatures. Thermistor...

  • 8 Photo-Detector Circuit Board

    2014-11-16 03:01:25114

    The circuit on this page is for a simple light detector circuit board that has 8 detectors that can be used with visible or infrared light systems. The...

  • Digit hygrometer circuit diagram composed of humidity sensit

    2014-11-16 01:31:17136

    The figure1 is a digit hygrometer which is composed of humidity sensitive capacitor. 1KHz oscillator is made of G1, G2, it periodically trigger monosta...

  • The luminous flux adjustment equipment circuit of light depe

    2014-11-16 00:57:5468

    This is a luminous flux adjustment equipment circuit of light dependent resistors (LDR). This circuit is used to measure the luminous flux on the LDR, ...

  • Air Model Finder

    2014-11-16 00:26:13128

    This simple circuit produces a loud trilling noise, if no valid transmitter signal is received. This frequency must correspond with the resonant freque...

  • The simplest multi-oscillator circuit of photoelectric coupl

    2014-11-15 23:46:0482

    In the figure is simplest multi-oscillator circuit of photoelectric couplers. When the power is on, as the voltages on the two terminals of capacitor C...

  • Dew sensor principle Commentary

    2014-11-15 19:57:1470

    This article is exposed sensor principle explanation. By convention, in order to better grasp the principles you are, we recommend you to combine text ...

  • Electronic Sensor Principle Circuit

    2014-11-15 18:56:5488

    The picture shows the electronic sensor principle circuit.The picture a is mechanical-switching type. The picture b is mechanical-differential transfor...

  • Heat sensitive sensor Direction detector

    2014-11-15 18:24:2391

    The sensor has a throughput detection device with several throughput detection membranes perpendicular to the flow, each with heating sections and temp...

  • The LEV display drive circuit of the TA7666P dual-line 5-bit

    2014-11-15 17:50:1878

    In the figure is the LEV display drive circuit of the TA7666P dual-line 5-bit LED. The integrated circuit of TA7666P is produced by Toshiba, the local ...

  • Remote Sensor System Pre-Amp CIRCUIT (LM101A)

    2014-11-15 14:29:18341

    This article describes the Remote Sensor System Pre-Amp CIRCUIT (LM101A). The content is very simple, very helpful. Components in this article can help...

  • Phone With Musical Songs(II)Circuit

    2014-11-15 13:45:0168

    The ring call may make peoplenot able todistinguish which phoneis ringing when one office has many phones.There is a solution that changing the neighbo...

  • Acid-Rain Monitor Circuit

    2014-11-15 13:40:0292

    The drain-to-source resistance of Ql varies depending on the acidity of the sample presented to Ql`s gate circuit. That variable resistance varies the ...

  • MN12C2010 Memory Integrated Circuit

    2014-11-15 13:06:4574

    MN12C2O10 is memory integrated circuit produced by Matsushita, widely used in televisions, audio equipment, air conditioners and other series of contro...

  • Celsius-to-digital thermometer works with remote sensor

    2014-11-15 13:04:5873

    Use a single-supply system to precisely measure the temperature at a remote location with less than 1C error over a 0 to 100C range (Figure 1). The cir...

  • Radiation Sensor Circuit

    2014-11-15 12:00:47138

    Here is a simple tool to check the degree of radiation from an electric or electronic instrument. The LEDs in the circuit will give a running light pat...

  • Electric automatic check door circuit diagram

    2014-11-15 11:30:0670

    It is a electric automatic check door circuit diagram, it is fixed a PTC thermal resistor component on the electric check door, this control system is ...

  • Optical Interruption Sensor

    2014-11-15 11:13:58127

    Using only an 8-pin IC and a few discrete components, you can build the infrared optical interrupter. The NE567 tone decoder has all the necessary circ...

  • Outdoor antenna alarm circuit

    2014-11-15 11:12:5678

    The outdoor antenna alarm circuit is as shown. The power supply of the microwave antenna is indoor, and the frequency converter is outdoor. They are co...

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