comment [13]
- From milos_gost on 03-10-2008 at 10:05:31
kolike su vrijednosti ovih djelova?
IP: 213.133.11.215
IP: 213.133.11.215
/Schematics/Everything else/GSM phone ring detection
This circuit was designed to detect when a call is incoming in a cellular phone (even when the calling tone of the device is switched-off) by means of a flashing LED.
The device must be placed a few centimeters from the cellular phone, so its sensor coil L1 can detect the field emitted by the phone receiver during an incoming call.
Part list
R1____________100K 1/4W Resistor
R2______________3K9 1/4W Resistor
R3______________1M 1/4W Resistor
C1,C2_________100nF 63V Polyester Capacitors
C3____________220µF 25V Electrolytic Capacitor
D1______________LED Red 10mm. Ultra-bright (see Notes)
D2___________1N5819 40V 1A Schottky-barrier Diode (see Notes)
Q1____________BC547 45V 100mA NPN Transistor
IC1____________7555 or TS555CN CMos Timer IC
L1_____________Sensor coil (see Notes)
B1_____________1.5V Battery (AA or AAA)
Author (sent by): Red circuits
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Date: 26-03-2007
Lokalna verzija ove stranice: Detekcija emitovanja mobitela
Tags: detection, detektor, gsm. +add your tag
202_detekcijaemitovanjamobitela.zip
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comment [14]
- From milos_gost on 03-10-2008 at 10:10:20
a sad vidim:)
IP: 213.133.11.215
IP: 213.133.11.215
comment [12]
- From Branko on 14-03-2008 at 19:07:45
Na izlazu je udvostrucivac napona (kondenzator i dioda), zato moze da radi na 1,5 V.
IP: 213.198.202.228
IP: 213.198.202.228
comment [11]
- From masteragent on 06-05-2007 at 11:26:33
sorry, sada vidim da moba biti par cm. Ako je to to, ovo se moze kupiti za 3 km gotovo. Manje
je od klikera, privjesak za mobitel koji svjetluca kada mob zazvoni. Meni treba nesto sto bi
radilo na 4-5 metara (unutar prostorije). Je'l moze??
IP: 80.71.146
IP: 80.71.146
comment [10]
- From masteragent on 06-05-2007 at 11:23:49
Samo da kupim dijelove i bacam se na posao. Zanima me na koju ovo daljinu detektuje signal?
IP: 80.71.146.42
IP: 80.71.146.42
comment [8]
- From masteragent on 04-05-2007 at 15:02:13
pa ovo sam cekao! Ljudi, ovo trazim duze vrijeme. Odlicno. nisam jos probao ali se bacam na
posao.
IP: 89.146.131.26
IP: 89.146.131.26
comment [7]
- From Petar on 27-04-2007 at 16:15:28
hm.. da.. zeznuo sam se.. ona sto trosi 20mA struje radi na 2 volta
IP:
comment [5]
- From Damir on 26-04-2007 at 10:55:17
LED se pali ako se ne varam na 1.7 V, posto je u kolu timer oscilacije koje proizvodi na
elektrolitskim kond podici ce napon za sqrt(2) sto je nekih 2.12 V. ispravite me ako negdje
grijesim...
IP: 91.191.27.102
IP: 91.191.27.102
