How To Set Defiant Timer

A time switch (also called a timer switch, or simply timer) is a timer that operates an electric switch controlled by the timing mechanism.

Intermatic introduced its get-go fourth dimension switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.^[1]

The switch may be connected to an electric excursion operating from mains ability, including via a relay or contactor; or low voltage, including bombardment-operated equipment in vehicles. Information technology may be built into power circuits (equally with a central heating or water heater timer), plugged into a wall outlet with equipment plugged into the timer instead of directly into the power point; or built into equipment.

A sleep timer is a function on many mod televisions and other electronic devices that shuts off the ability later a preset corporeality of time. The setting is commonly made either from the remote control of the device or the device'south menu. They are intended to allow viewers to watch equally they fall asleep.

The mechanism may be mechanical (e.g., clockwork; rarely used nowadays), electromechanical (e.g., a slowly rotating geared motor that mechanically operates switches) or electronic, with semiconductor timing circuitry and switching devices and no moving parts.

The timer may switch equipment on, off, or both, at a preset time or times, after a preset interval, or cyclically. A countdown fourth dimension switch switches power, ordinarily off, subsequently a preset time. A cyclical timer switches equipment both on and off at preset times over a period, then repeats the cycle; the catamenia is usually 24 hours or 7 days.

For example, a central heating timer may supply heat for a specified menses during the morning and evening every weekday, and all day on weekends. A timer for an unattended boring cooker may switch on automatically at a time and for a menses suitable to have food fix at mealtime. Besides, a coffee maker may turn itself on early in the morning in time for awakening residents to have fresh java already brewed for them.

Timers may exercise other processing or accept sensors; for case, a timer may switch on lights only during hours of darkness, using a seasonal algorithm^[two] or low-cal sensor. Combining the two allows a low-cal to come on at sundown and become off at midnight, for example.

An astronomical (or astronomic) timer calculates dawn and dusk times for each day of the year based on the latitude and longitude (or but north/central/s and fourth dimension zone on more cheaply made ones), and the 24-hour interval of the twelvemonth (calendar month and date), programmed past the user upon installation in addition to the usual time of day, except in the case of GPS enabled astronomic timers wherein all programming is fully automated. This eliminates the demand for a photocell (which may be repeatedly triggered on and off by the lite which it operates) or for repeatedly re-setting a regular timer for seasonal changes in the length of day or for daylight-saving fourth dimension. This allows exterior lighting like a porch low-cal fixture to be controlled past simply replacing its indoor wall switch, or doing the same for a lamp in a night interior corner (away from a window) by simply plugging-in a self-adjusting lamp timer.

Fourth dimension switches can be used for many purposes, including saving electrical energy by consuming it simply when required, switching equipment on, off, or both at times required by some process, and home security (for case switching lights in a pattern that gives the impression that premises are attended) to reduce the likelihood of break-in or prowling.

Amongst applications are lighting (interior, exterior, and street lighting), cooking devices such as ovens, washing machines, and heating and cooling of buildings and vehicles.^[3] Born automatic washing auto controllers are examples of very complex electromechanical and electronic timers cycles, starting and stopping many processes including pumps and valves to make full and empty the drum with water, heating, and rotating at different speeds, with different combinations of settings for dissimilar fabrics.

Gallery [edit]

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  A 24-hour cyclical electromechanical UK fourth dimension switch showing current time 06:15 and gear up to exist on from 07:00 to 07:45 and 20:00 to 22:00.

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  Digital in-wall timer switch with battery for uninterrupted fourth dimension keeping

Run into too [edit]

• Shabbat clock

References [edit]

1. ^ "Intermatic company history". Retrieved 5 July 2022.
2. ^ Walter T. Grondzik, Alison M. Kwok, Benjamin Stein Mechanical and Electrical Equipment for Buildings, John Wiley and Sons, 2009 ISBN 0-470-19565-7 page 1201
3. ^ "Car warmers, block heaters, and energy controls" (PDF). Archived from the original (PDF) on Nov 30, 2010. Retrieved March 22, 2009.

Source: https://en.wikipedia.org/wiki/Time_switch

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