Clock Ticking Sound Generator Circuits Using NE555 Timer in Contemporary World
Dinesh S, Adhitya Sankaran G, Arun Kumar S, Bhargav Chandar T, Santhoshini.P
CMOS Technology, NE555 Model.
In Recent years, we have seen a tremendous increase in the development of embedded system technology, which has also contributed to developing the home appliances which are sleek, silent and high energy efficient. The NE555 model is a low-power, general purpose CMOS design version of the standard 555, also with a direct pin-for-pin compatibility with the regular 555. Its advantages are very low timing/bias currents, low power dissipation operation and an even wider voltage supply range of as low as 2.0 volts to 18 volts. At 5 volts the NE555 will dissipate about 400 microwatts, making it also very suitable for battery operation. The internal schematic of the IC is however totally different from the normal 555 version because of the different design process with CMOS technology. It has much higher input impedances than the standard bipolar transistors used. The CMOS version removes essentially any timing component restraints related to timer bias currents, allowing resistances as high as practical to be used. This very versatile version should be considered where a wide range of timing is desired, as well as low power operation and low current syncing appears to be important in the particular design.
Article Details
Unique Paper ID: 157460

Publication Volume & Issue: Volume 9, Issue 7

Page(s): 922 - 926
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