enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. File:Espressif ESP32 Chip Function Block Diagram.svg

    en.wikipedia.org/wiki/File:Espressif_ESP32_Chip...

    (Previously, the height of the two Wi-Fi blocks was smaller than the height of the Bluetooth blocks.) Fixed formatting of the "elaboration information" in the Xtensa LX6 microprocessor block. Added descriptive text to diagram's title for conveying what the ESP32 is (it's a Wi-Fi & Bluetooth microcontroller) for clarity.

  3. LED circuit - Wikipedia

    en.wikipedia.org/wiki/LED_circuit

    Simple LED (Light Emitting Diode) circuit diagram. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.

  4. Electrochemical gas sensor - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_gas_sensor

    The magnitude of the current is controlled by how much of the target gas is oxidized at the working electrode. Sensors are usually designed so that the gas supply is limited by diffusion, and thus the output from the sensor is linearly proportional to the gas concentration. This linear output is one of the advantages of electrochemical sensors ...

  5. ESP32 - Wikipedia

    en.wikipedia.org/wiki/ESP32

    ESP32 is a series of low-cost, low-power system-on-chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth.The ESP32 series employs either a Tensilica Xtensa LX6 microprocessor in both dual-core and single-core variations, an Xtensa LX7 dual-core microprocessor, or a single-core RISC-V microprocessor and includes built-in antenna switches, RF balun, power amplifier, low-noise ...

  6. Gas detector - Wikipedia

    en.wikipedia.org/wiki/Gas_detector

    Tin dioxide is the most common material used in semiconductor gas sensors, [9] and the electrical resistance in the sensor is decreased when it comes in contact with the monitored gas. The resistance of the tin dioxide layer, typically in the range of 10 to 500 kΩ in air, can drop to a small fraction of this value in the presence of a reducing ...

  7. Catalytic bead sensor - Wikipedia

    en.wikipedia.org/wiki/Catalytic_bead_sensor

    Passing combustible gas raises the temperature further which increases the resistance of the platinum coil in the catalysed bead, leading to an imbalance of the bridge. This output change is linear, for most gases, up to and beyond 100% LEL , response time is a few seconds to detect alarm levels (around 20% LEL), [ 1 ] at least 12% oxygen by ...

  8. Hall effect sensor - Wikipedia

    en.wikipedia.org/wiki/Hall_effect_sensor

    In such a case the Hall sensor is mounted in a gap in the magnetic core around the current conductor. [24] As a result, the DC magnetic flux can be measured, and the DC in the conductor can be calculated. Hall effect current sensor with internal integrated circuit amplifier. 8 mm opening.

  9. NodeMCU - Wikipedia

    en.wikipedia.org/wiki/NodeMCU

    NodeMCU DEVKIT 1.0, bottom. NodeMCU is a low-cost open source IoT platform. [4] [5] It initially included firmware which runs on the ESP8266 Wi-Fi SoC from Espressif Systems, and hardware which was based on the ESP-12 module. [6] [7] Later, support for the ESP32 32-bit MCU was added.