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Showing posts with the label TIMER

SMOKE DETECTOR USING 555 TIMER

Here I am presenting you a simple smoke sensing alarm circuit using 555 timer . By using this circuit you can detect smoke and it alarms when the air is contaminated. Let me introduce you the components used in it. IC- NE555 Time r Sensor- PHOTO INTERRUPTER MODULE SPEAKER This smoke detecting alarm is based directly on an astable multivibrator and sensor (Photo interrupter module). The sensing module triggers the oscillator and generates an alarm through the loud speaker. Read More.....

TV REMOTE JAMMER CIRCUIT USING 555 TIMER

Here is a Tv remote jammer circuit, using NE555 timer IC. By using this you can watch your favorite TV channel without any interruptions. Ie; No one can be able to change the channel by means of remote, if the circuit remains ON. The circuit is simple to make at your own home, with very low cost.  Let’s go deeply into the specification and requirements of this Project. Read More.....

SIMPLE NE555 TIMER IC TESTING CIRCUIT

Ne555   is one of the most commonly used timer IC. It is a monolithic timing circuit that can produce accurate and highly stable time delays or oscillations. Like general purpose OP AMPs, it is very much reliable, easy to use and cheaper in cost. It has a variety of applications including monostable and astable multivibrators, dc-dc converters, digital logic probes, waveform generators, analog frequency meters, tachometers, temperature measurement and voltage regulators. The timer basically operates on one of the two modes either as a monostable or as an astable multivibrator. Read More.....