The schematic of an automatic cooler fan for audio amplifiers is given here. The circuit automatically switch ON the cooler fan whenever the temperature of the heat sink exceeds a preset level. This circuit will save a lot of energy because the cooler fan will be OFF when the amplifier is running on low volume. At low volume less heat will be dissipated and it will not trigger the cooler fan ON. The temperature is sensed using an NTC (negative temperature coefficient) thermistor R2. Junction of
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Why are humans so obsessed with screens? Every day people are spending their time playing on their mobile phones‚ watching television and sitting in front of their computer. How larger the screen‚ how bigger the fun‚ phones are getting larger and larger and watching TV is no fun on a small television‚ and why else would you go to the cinema if it’s not because they have an enormous screen? In the first place‚ people want to escape from the reality for a moment‚ so than they can watch a movie
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Global Social TV Market worth $256.44 Billion by 2017 According to a new market research report‚ “Social TV Market: Global Advancements Forecasts & Analysis (2012 – 2017)”‚ the total Social TV market is expected to reach $256.44 billion by 2017 with a CAGR of 11.2%. Browse 62 market tables and in-depth TOC on “Social TV Market: Global Advancements Forecasts & Analysis (2012 – 2017)”. http://www.aarkstore.com/reports/Social-TV-Market-Global-Advancements-Forecasts-Analysis-2012-2017--228908
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circuit ideas Hearing aid IVEDI S.C. DW T.K. Hareendran T his low-cost‚ general-purpose electronic hearing aid works off 3V DC (2x1.5V battery). In this circuit‚ transistor T1 and associated components form the audio signal preamplifier for the acoustic signals picked up by the condenser microphone and converted into corresponding electrical signals. Resistor R5 and capacitor C3 decouple the power supply of the preamplifier stage. Resistor R1 biases the internal circuit of
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My Ideal Computer System What kind of computer system would you build if money was no object? The system I would love to have with make watching video‚ listening to music and playing games easy to do. It will also include home automation. My ideal computer system as today would include a Dell Precision R5500 with a lot of bells and whistles added to it. The computer will have a Dual 6 core Intel Xeon processor (2.66 GHz‚ 12m L3‚ 6.4 GT/s turbo). It will have two 6 GB nVIDIA Quadro 6000
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From technological points of view‚ we are in a marvelous age. Nowadays‚ TV as a product of technology has turned to an integral part of our lives. This issue that “TV has bad effects on children “is a controversial one and can be approached from different angles due to its complexity; but in my opinion‚ a closer examination reveals that new generation is growing up addicted to the TV as it has never been truer than it is today . Especially‚ it has very bad effects on children. We can consider negative
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Nowadays with all new types of technology‚ people and teenagers in specific spend a lot of time on their screens. Excessive screen time is a major issue that needs to be monitored. It could really affect many people in many different ways. It could possibly even be dangerous if one uses it to much. Too much screen time has a negative affect socially‚ emotionally‚ and mentally for developing teenagers‚ because they won’t develop the appropriate social skills‚ they can see pictures that can be emotionally
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Parents always tell their children that if they use too much technology their brain will turn to mush. Children`s brains won`t quite turn to mush‚ but there still are lots of effects of using too much technology. Young children and teens should be allowed only one to two hours of screen time per day‚ while children ages two and under should be allowed no screen time at all. A study has shown that 61% of people have said that 5 or more hours of their day is screen time‚ while 30% of people have said
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Myelomeningocele is a neural tube defect in which the bones of the spine do not completely form. This results in an incomplete spinal canal. The spinal cord and meninges protrude from the child’s back and form outside the baby’s body (Medline Plus‚ 2016). Myelomeningocele is the most severe form of spina bifida. This results in weakness and loss of sensation below the defect. Neural tube defects are birth defects‚ of the brain‚ spine‚ and spinal cord‚ that usually occur between day 17 and day 30
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St. Mary’s University Abstract This paper reviews the history‚ etiology‚ embryology‚ prevention‚ treatment‚ and the ethical and legal concerns of infants born with the neural tube defect known as anencephaly. Anencephaly is a defect that occurs early in the gestational period of a fetus‚ caused by the neural tube failing to close completely. This defect results in the lack of the scalp‚ skull‚ cranial vault and cerebral hemispheres developing normally. The outcome is either a spontaneous abortion
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