ijaers social
facebook
twitter
Blogger
google plus

International Journal of Advanced Engineering, Management and Science


Wireless Controlled Door-Bell

( Vol-2,Issue-3,March 2016 )

Author(s): Devendra Sharma, Devi Lal, Hemraj Meena, Santosh Kumar



Total View : 803
Downloads : 14
Page No: 58-61
ijaems crossref doiDOI:

Keywords:

Pulse Generator, Rf Amplifier.

Abstract:

Now-a- day’s wireless control of appliance is in practice, because of its advantage like no wire is needed, multiple controlling is less complicated. The controlling range of wireless doorbell is 100M. As the wireless doorbell is wireless based project, it is divided into two major section i.e. transmitter and receiver. Transmitter: This transmitter section is designed around oscillator transistor (BF194B) T2 followed by two transistor (BC148) T1 and T3. Transistor T2 generate special radio frequency determined by trimmer (variable capacitor) and coil. Transistor T1 is used as pulse generator. The output from transistor T3 is given to emitter of transistor T2 in order to get radio frequency from its collector. Trimmer VC1 is used to adjust the transmitter frequency. Receiver: The receiver section is further divided into two main sections i.e. RF amplifier section and bell trigger section. An aerial is used to receive the transmitted frequency from remote which is further amplified by amplifier and trigger circuit. The whole receiver circuit utilizes seven transistors.

Cite This Article:
Show All (MLA | APA | Chicago | Harvard | IEEE | Bibtex)
Share: