"Temperature controlled fan using at89c51" Essays and Research Papers

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    THERMOMETER CALIBRATION USING CONTROLLED TEMPERATURE BATHS TXDOT DESIGNATION: TEX-926-K Test Procedure for THERMOMETER CALIBRATION USING CONTROLLED TEMPERATURE BATHS Texas Department of Transportation TxDOT Designation: Tex-926-K Effective Date: August 1999 1. SCOPE 1.1 Calibrate thermometers by comparison with standard thermometers while immersed in stirred water or oil baths. Alternately‚ calibrate specific points by placing in a reference temperature bath such as a mixture

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    for the alarm. An LDR is used to control the switching of the alarm. During night time‚ the LDR resistance is high and the alarm is in OFF state. When daylight is detected‚ the resistance goes low and alarm switches ON. It can also be switched off using a manual switch. This project can be effectively used for automatic lighting of bedrooms‚ hostels‚ streetlights‚ garden lamps etc to save power and reduce human intervention. It is of low cost and requires only a trivial amount of DC power to operate

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    uses a triac‚ diac and has a radio-frequency interference (RFI) noise suppression circuit built into it as well.  The circuit controls the average power to a load through the triac by phase control. The AC supply is applied to the load for only a controlled fraction of each cycle. The triac is held in an OFF condition for a portion of its cycle then is triggered ON at a time determined by the circuit. Each time the triac is turned on‚ the load current changes very quickly - a few micro seconds – from

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    International Journal of Science and Research (IJSR)‚ India Online ISSN: 2319-7064 Design an Automatic Temperature Control System for Smart Electric Fan Using PIC Zairi Ismael Rizman1‚ Kim Ho Yeap2‚ Nuraiza Ismail3‚ Norizan Mohamad4‚ Nur Hafizah Rabi’ah Husin5 1 Faculty of Electrical Engineering‚ Universiti Teknologi MARA (UiTM) Terengganu‚ 23000 Dungun‚ Terengganu‚ Malaysia 2 Faculty of Engineering and Green Technology‚ Tunku Abdul Rahman University‚ Jln. Universiti‚ Bandar Barat

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    To investigate the effect of temperature on an enzyme controlled reaction Introduction and planning For the investigation of enzymes‚ I am going to conduct an experiment to see how temperature can affect the rate of reaction of enzymes by testing it with starch. The enzyme that we are going to use is called amylase. We are going to test this enzyme with starch. By mixing amylase and starch solutions together under different temperature conditions‚ we can record the rate of reaction by taking a

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    At89C51 Interfacing with Gps

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    International Journal of Electronics and Computer Science Engineering Available Online at www.ijecse.org 1103 ISSN- 2277-1956 Real Time Vehicle Tracking System using GSM and GPS Technology- An Anti-theft Tracking System Kunal Maurya 1‚ Mandeep Singh 2‚ Neelu Jain 3 Department of Electronics‚ 1‚3PEC University of Technology Chandigarh- 160012‚ India 1 kunalmaurya@gmail.com‚ 3neelujain@pec.ac.in 2 Department of E.P.D.T.‚ 2C-DAC ‚ Mohali 2 cdac_mandep@yahoo.co.in Mohali-160071‚

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    have a relationship to the idea being expressed (waving a car around your stopped car)‚ they often have more obscure symbolism and take longer to learn (handshaking‚ giving a "high-five). In the realm of computing‚ we have other gestures. When using a mouse‚ we indicate position on the computer screen by sliding our hands over the desk in a relative (not absolute-positioned) motion. We use finger gestures‚ including some we call "pushing buttons"‚ that are really more akin to the dexterity of

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    SIMULATION OF TEMPERATURE CONTROL OF CHAMBER BASED ON AUTOMATIC FAN SPEED CONTROL Gaurav S. Ashara1‚ Dipesh S. Vyas2 1 Research Scholar‚ Instrumentation & Control Department‚ AITS‚ Rajkot‚ India. 2 Assistant Professor‚ Instrumentation & Control Department‚ AITS‚ Rajkot‚ India. Abstract - This paper presents the design and implement of microcontroller based temperature control using electric fan. The electric fan automatically switches the speed according to change inner temperature of the box. The

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    Death Fan

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    Fan death is a widely held belief in South Korea that an electric fan left running overnight in a closed room can cause the death of those sleeping inside. All fans sold in South Korea come with an automatic timer that turns the fan off after a certain number of minutes.[1] ------------------------------------------------- Origins of belief The genesis of this misconception is unclear‚ but fears about electric fans date almost to their introduction in Korea‚ with stories dating to the 1920s

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    Centrifugal Fans

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    the operating procedure and principle as well as the efficiency of centrifugal fans. B. Theory and Analysis Tests of ventilating fans or blowers are made frequently by a very simple method‚ that is‚ by determining the necessary data for a calculating efficiency by measuring the work done by the fan “on the air” in giving velocity‚ and the horsepower required to drive the fan alone‚ excluding bearing friction. The fan is preferably operated by an electric motor‚ of which the efficiency can be

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