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  2. Volume control - Wikipedia

    en.wikipedia.org/wiki/Volume_control

    Volume control can refer to: Volume controlled continuous mandatory ventilation; Potentiometer, a feature on audio equipment for adjusting the sound level

  3. Electret microphone - Wikipedia

    en.wikipedia.org/wiki/Electret_microphone

    The JFET is externally-powered by the DC voltage V + through a resistor which sets the gain and output impedance. The output audio signal is received though a DC blocking capacitor. An electret microphone is a microphone whose diaphragm forms a capacitor (historically-termed a condenser) that incorporates an electret.

  4. Micrometer (device) - Wikipedia

    en.wikipedia.org/wiki/Micrometer_(device)

    Diagram of a micrometer showing a measurement of 7.145 mm ± 0.005 mm A micrometer is composed of: Anvil : The shiny part that the spindle moves toward, and that the sample rests against.

  5. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    How the physical body of the microphone is oriented relative to the diagrams depends on the microphone design. For large-membrane microphones such as in the Oktava (pictured above), the upward direction in the polar diagram is usually perpendicular to the microphone body, commonly known as "side fire" or "side address". For small diaphragm ...

  6. ISO 14971 - Wikipedia

    en.wikipedia.org/wiki/ISO_14971

    ISO 14971 Medical devices — Application of risk management to medical devices is a voluntary consensus standard, [1] published by International Organization for Standardization (ISO) for the first time in 1998, and specifies terminology, principles, and a process for risk management of medical devices.

  7. DC connector - Wikipedia

    en.wikipedia.org/wiki/DC_connector

    The polarity for 12 V DC sockets is center pin positive (+), outer collar negative (−). Reversed polarity will damage some electronic devices. Although the nominal voltage of a 12 V lead acid battery is 12 V DC, when the engine is running the car's battery charging system will bring the system voltage to 13.8 V DC or higher. [10]

  8. Flyback converter - Wikipedia

    en.wikipedia.org/wiki/Flyback_converter

    Fig. 1: Schematic of a flyback converter. The flyback converter is used in both AC/DC, and DC/DC conversion with galvanic isolation between the input and any outputs. The flyback converter is a buck-boost converter with the inductor split to form a transformer, so that the voltage ratios are multiplied with an additional advantage of isolation.

  9. Microtome - Wikipedia

    en.wikipedia.org/wiki/Microtome

    A conceptual diagram of laser microtome operation. The laser microtome is an instrument for contact-free slicing. [22] Prior preparation of the sample through embedding, freezing or chemical fixation is not required, thereby minimizing the artifacts from preparation methods. Alternately this design of microtome can also be used for very hard ...