27-03-2011, 11:10 PM
mobile shield abstract
hello make it fast please
tan q...
27-03-2011, 11:10 PM
mobile shield abstract hello make it fast please tan q...
09-04-2011, 05:40 PM
please send full details
08-04-2012, 01:28 AM
Would you please send me the report of mobile shield ?
My mail is ishaque_rony[at]yahoo.com
09-04-2012, 11:52 AM
to get information about the topic "mobile shield" full report refer the link bellow https://seminarproject.net/Thread-mobile-shield
21-09-2013, 04:54 PM
MOBILE SHIELD MOBILE SHIELD.pdf (Size: 103.49 KB / Downloads: 14) Protect your mobile phone from greater sensitivity and enables the cir- unauthorised use or theft using cuit with hand capacitance effect. Out- this simple circuit. It can gener- put pulses from the oscillator are di- ate a loud chirping sound when some- rectly given to trigger pin 2 of the body attempts to take away the mo- monostable. The monostable uses a bile handset. The added feature is that low-value capacitor C6, resistors R3 the circuit also works as a mobile and preset VR1 for timing. charger. The output frequency of the The circuit is powered by a monostable is adjusted using preset step-down transformer X1 with recti- VR1 such that it is slightly less than fier diodes D1 and D2 and filter ca- that of the astable. The warning LED1 and buzzer are put leads. Make the protective shield connected such that they become ac- using 10cm×10cm copper-clad board tive only when the output of the or aluminium sheet. Connect it to monostable sinks current. In the the circuit using a 15cm plastic wire. standby state, the LED1 remains ‘off’ Leads of all capacitors should be |
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