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  2. Photoresistor - Wikipedia

    en.wikipedia.org/wiki/Photoresistor

    Three photoresistors with scale in mm Large CdS photocell from a street light. A photoresistor is less light-sensitive than a photodiode or a phototransistor.The latter two components are true semiconductor devices, while a photoresistor is a passive component that does not have a PN-junction.

  3. Resistor ladder - Wikipedia

    en.wikipedia.org/wiki/Resistor_ladder

    A 1953 paper "Coding by Feedback Methods" [1] describes "decoding networks" that convert numbers (in any base) represented by voltage sources or current sources connected to resistor networks in a "shunt resistor decoding network" (which in base 2 corresponds to the binary-weighted configuration) or in a "ladder resistor decoding network" (which in base 2 corresponds to R–2R configuration ...

  4. Voltage-controlled oscillator - Wikipedia

    en.wikipedia.org/wiki/Voltage-controlled_oscillator

    A microwave (12–18 GHz) voltage-controlled oscillator. A voltage-controlled oscillator (VCO) is an electronic oscillator whose oscillation frequency is controlled by a voltage input. The applied input voltage determines the instantaneous oscillation frequency.

  5. Switched-mode power supply - Wikipedia

    en.wikipedia.org/wiki/Switched-mode_power_supply

    Stand-alone switched-mode power supply An adjustable switched-mode power supply for laboratory use. A switched-mode power supply (SMPS), also called switching-mode power supply, switch-mode power supply, switched power supply, or simply switcher, is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.

  6. Electrical termination - Wikipedia

    en.wikipedia.org/wiki/Electrical_termination

    SCSI terminator. In electronics, electrical termination is the practice of ending a transmission line with a device that matches the characteristic impedance of the line. . Termination prevents signals from reflecting off the end of the transmissi

  7. 78xx - Wikipedia

    en.wikipedia.org/wiki/78xx

    78xx (sometimes L78xx, LM78xx, MC78xx...) is a family of self-contained fixed linear voltage regulator integrated circuits. The 78xx family is commonly used in electronic circuits requiring a regulated power supply due to their ease-of-use and low cost.

  8. Current limiting - Wikipedia

    en.wikipedia.org/wiki/Current_limiting

    Q2 is the protection transistor which turns on as soon as the voltage across R sens becomes about 0.65 V. This voltage is determined by the value of R sens and the load current through it (I load). When Q2 turns on, it removes the base current from Q1, thereby reducing the collector current of Q1, which is nearly the load current.

  9. Handkerchief code - Wikipedia

    en.wikipedia.org/wiki/Handkerchief_code

    The handkerchief code (also known as the hanky code, the bandana code, and flagging) [1] is a system of color-coded cloth handkerchief or bandanas for non-verbally communicating one's interests in sexual activities and fetishes. The color of the handkerchief identifies a particular activity, and the pocket it is worn in (left or right ...

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