This door alarm is based on the interruption of Laser beam. A low cost Laser pointer is used as the source of light beam. When somebody breaks the laser path, the alarm will be generated for few seconds.
linK
Short circuit Protection
With this simple temperature to voltage converter circuit we can do a precise measurement of the temperature in a room. A NTC resistor or a thermistor is used as a sensor that has strong temperature dependence. If the NTC temperature rises then the output voltage rises with 0.5 V per 10C.
Short circuit Protection
Short circuit Protection
Short circuit Protection
With this simple temperature to voltage converter circuit we can do a precise measurement of the temperature in a room. A NTC resistor or a thermistor is used as a sensor that has strong temperature dependence. If the NTC temperature rises then the output voltage rises with 0.5 V per 10C.
Short circuit Protection
Short circuit Protection
دوائر ومشاريع تخرج
دوائر و مشاريع تخرج
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