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  • GY-YZ-161 high precision pressure sensor circuit

    2014-11-18 16:36:0073

    GY-YZ-161 high precision pressure sensor is made by use of semiconductor and micro-machining technology to combine solid-state integrated process techn...

  • Electricity-saving voltage stabilizer circuit

    2014-11-18 15:16:0973

    The electricity-saving voltage stabilizer circuit is as shown in the figure. This voltage stabilizer has the function of general delay stabilizer, the ...

  • FREEZE_UP_SENSOR

    2014-11-18 13:14:0174

    Using a bridge circuit to provide an accurate activation temperature, this circuit will turn on a heating unit or other device when the temperature dro...

  • Sound Sensor Schematics (CA3035)

    2014-11-18 12:12:21330

    This article describes the Sound Sensor Schematics (CA3035). The content is very simple, very helpful. Components in this article can help you understa...

  • Light control timing switch circuit

    2014-11-18 11:15:0877

    The Mexico light control timing switch circuit is as shown in the figure, this circuit can be used to control the outdoor lamps and the power supply of...

  • High Accuracy Sensor Dial Pulse Indicator

    2014-11-18 05:53:0074

    The indicator has a high accuracy sensor and an info dealing circuit. DO NOT immerse it in any type of liquid.If in the ON position, theLCDcan not disp...

  • Pressure Sensor Signal Conditioning Circuit with Single Op-A

    2014-11-18 05:25:4276

    This is pressure sensor signal conditioning circuit. It is simple and inexpensive circuit because it has small geometry and simple pressure sensor. It ...

  • SOUND_OPERATED_TWO_WAY_SWITCH

    2014-11-18 05:12:4575

    This circuit operates a relay each time a sound of sufficient intensity is made, thus one clap of the hands will switch it one way, a second clap will ...

  • Sony to Double Capacity of CMOS Image Sensors(SN74LS153N)

    2014-11-18 02:44:5069

    This article describes the Sony to Double Capacity of CMOS Image Sensors (SN74LS153N). The principle is very simple, very practical. The circuit compon...

  • The switch circuit with two normally open contacts and close

    2014-11-18 02:13:2676

    In the figure is the switch circuit with two normally open contacts and closed contacts, when the input signal is a low LEV 0 , the transistor TV is bl...

  • Antigravity Relay

    2014-11-17 22:04:56143

    Click on a component to visit its circuit description.`TP` indicates a test point, a convenient spot to connect your voltmeter. visit page....

  • Touch switch sensor electronic project circuit design

    2014-11-17 20:31:5676

    Sensors A touch switch sensor electronic project can be designed using this simple electronic diagram below. This touch switch sensor use one sense swi...

  • FIRE_SIREN_USES_FLASHER

    2014-11-17 20:20:4375

    Low-drain circuit operating from 1.5-V cell uses National LM3909 flasher IC to simulate fire-alarm siren. Pressing button produces rapidly rising wail,...

  • under?-over voltage detector

    2014-11-17 19:39:04729

    In Fig.1 A precision DC under?voltage relay switch. The opamp is wind as a voltage comparator, with a reference voltage applied to pin 2 and the test v...

  • LM134-LM10 Thermometer/Temperature Sensor

    2014-11-17 17:03:00173

    UsingLM134andLM10integrated circuits, we can build athermometerwhich has -55 to 150°C sensing range.? The ideal meter for this circuit is a 0-200uA di...

  • Brightness Control Relay Circuit

    2014-11-17 15:23:2975

    As shown in figure is a brightness control relay circuit.Resistance R1, R2 and photoresistance R3 form a divider circuit.When the light isdark to a cer...

  • Logarithmic Light (Photodiode) Sensor Signal Conditioner

    2014-11-17 13:34:0375

    There are many measurement system that would be more suitable if we use logarithmic scale, especially when we try to mimics human sensory response. Mos...

  • Schmitt Trigger Photo switch

    2014-11-17 12:59:05129

    This is basically a Schmitt Trigger circuit which receives input from a cadmium sulfide photo cell and controls a relay that can be used to switch off ...

  • High sensitivity sound snoop device

    2014-11-17 12:28:0479

    Working principleThe circuit is shown above.Microphone which is put in a special bobbinrecieves sound from certain direction(Other directions are inhib...

  • Heartbeat Sensor (Tranduscer)

    2014-11-17 10:14:1373

    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...

  • _HI_LO_TEMPERATURE_SENSOR

    2014-11-17 06:27:0066

    Resistors R1, R2, and the two 2.2 k resistors form a bridge circuit. R2 is a therrnistor, and RI sets the temperature at which L2 lights. Lower or high...

  • Light-controlled-lamp-switch

    2014-11-17 06:03:10193

    A school drama needed lamps that automatically turned on and off when spot lights did the same. Lamp switching had to be wireless, durable, dependable,...

  • Digital telemetering thermometers FDD5 and JDD5

    2014-11-17 05:47:3367

    Transmitter circuit:The temperature detecting circuit is composed of the temperature integrated sensor AD590, this circuit changes the temperature vari...

  • AccelR8

    2014-11-17 05:06:5298

    The schematic show that the AccelR8 only uses 3 IC`s. An AVR 8515 microcontroller do the calculation work and controls the other circuits. An MAX603 co...

  • SOUND_SENSOR

    2014-11-17 03:58:3192

    By using a microphone,high-gain amplifier(Fig.37-10(b)),and detector-relay driver(Fig.37-10(a)asound-detecting alarm system can be constructed....

  • Temperature_senstive_heater_control

    2014-11-17 00:43:0871

    This circuit shows the basic UJT building block (Fig. 9-1) that is used to control an 800-W heater system. The simple RC circuit of Fig. 9-1 is replace...

  • Null-detector

    2014-11-17 00:30:00207

    In this indicating comparator circuit, R2 sets the hysteresis. If the 741 saturates at ± 12 V, the current in R1 will be approximately ± 10 mA if...

  • Brain-Wave Machine

    2014-11-16 21:29:03127

    Humans have been using light and sound to achieve altered states of consciousness for thousands of years. Primitive cultures used flickering fires and ...

  • Sobriety Tester with LM3914

    2014-11-16 20:20:22223

    With all the holidays upon us, understandably some of us will be drinking alcoholic beverages. This circuit can be used as a guideline how much you hav...

  • BACK_BIASED_GaAsP_LED_OPERATES_AS_LIGHT_SENSOR

    2014-11-16 19:52:3268

    Using a simple 741 amplifier connected as a current-to-voltage converter with the LED as the current source, the voltage at the output is proportional ...

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