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    jyrtt's Avatar
    jyrtt Posts: 1, Reputation: 1
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    #1

    Jun 13, 2016, 08:22 PM
    What do the transistors in garage door openers do?
    What is the function of the transistors in garage door openers?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Jun 14, 2016, 04:02 AM
    They are part of the electrical control board circuit and typically act as switches.
    ScottGem's Avatar
    ScottGem Posts: 64,966, Reputation: 6056
    Computer Expert and Renaissance Man
    		  
    #3

    Jun 14, 2016, 05:30 AM
    Transistors are essentially switches. Before transistors electronic devices used vacuum tubes instead. The Transistors are used to tell the devices what to do when you press the button.

    See How Transistors Work | HowStuffWorks
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #4

    Jun 14, 2016, 07:19 AM
    A transistor is basically a signal amplifier. When AT&T developed them it was for the purpose of replacing tubes which were considerably heavier and failed more often. Case in point, the communications systems used in WW II. Large cumbersome, heavy backpacks were replaced with much lighter and more stable radios.

    Eventually, "TTL" evolved, (Transistor - Transistor - Logic) was developed. That logic morphed into what is now IC (Integrated Circuits).

    A transistor receives a signal, boosts it level and feeds the supply of the IC.
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