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  2. 555 timer IC - Wikipedia

    en.wikipedia.org/wiki/555_timer_IC

    In 1972, Signetics originally released the 555 timer in DIP-8 and TO5-8 metal can packages, and the 556 timer was released in a DIP-14 package. [ 4 ] In 2006, the dual 556 timer was available in through-hole packages as DIP-14 (2.54 mm pitch), [ 21 ] and surface-mount packages as SO-14 (1.27 mm pitch) and SSOP-14 (0.65 mm pitch).

  3. Hans Camenzind - Wikipedia

    en.wikipedia.org/wiki/Hans_Camenzind

    Hans R. Camenzind (Swiss Standard German: [ˈkaːməntsɪnd]; 1 January 1934 – 8 August 2012 [1]) was an electronics engineer known for designing the 555 timer IC in 1971 under contract to Signetics. [2] He was the inventor on 20 US patents.

  4. Pulse-width modulation - Wikipedia

    en.wikipedia.org/wiki/Pulse-width_modulation

    For example, switching only has to be done several times a minute in an electric stove; 100 or 120 Hz (double of the utility frequency) in a lamp dimmer; between a few kilohertz (kHz) and tens of kHz for a motor drive; and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies. Choosing a switching frequency that ...

  5. Signetics - Wikipedia

    en.wikipedia.org/wiki/Signetics

    Signetics Corporation was an American electronics manufacturer specifically established to make integrated circuits. [1] Founded in 1961, they went on to develop a number of early microprocessors and support chips, as well as the widely used 555 timer chip.

  6. Dimmer - Wikipedia

    en.wikipedia.org/wiki/Dimmer

    Dimmer in a residential application with RF-based remote control. Non domestic dimmers are usually controlled remotely by means of various protocols. Analogue dimmers usually require a separate wire for each channel of dimming carrying a voltage between 0 and 10 V. Some analogue circuitry then derives a control signal from this and the mains ...

  7. Clemson wins ACC championship, automatic playoff berth on ...

    www.aol.com/sports/clemson-wins-acc-championship...

    Clemson led 24-7 at the half. SMU rallied from 17 points down in second half. The Mustangs scored on their first series of the second half with Jennings completing four passes for 65 yards, ...

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