Sijalice na mob-u

zecos · Post by **zecos** » 24-03-2007, 18:48

Zna li neko kako rade one led diodice na mob-u sto se prilepe onako.. kao ukras.. pa svetle kad te neko zove, naravno sve radi bez baterije!

jopagti · Post by **jopagti** » 24-03-2007, 18:59

zecos wrote:Zna li neko kako rade one led diodice na mob-u sto se prilepe onako.. kao ukras.. pa svetle kad te neko zove, naravno sve radi bez baterije!

Nije to do samih LED-ica,unutra su obicne LED-ice!
Mislim da su one od 3mm

zecos · Post by **zecos** » 24-03-2007, 19:15

Ne mogu nikako biti one od 3 mm kad sama debljina toga ne prelazi 1.5 mm

i znam da su led diodice, pitam na koji fazon rade, odakle se struja stvara da bi one svetlile !!!

froid · Post by **froid** » 24-03-2007, 19:21

LED su direktno bondirane. Ako zagledaš pre nego zalepiš zezalicu, na donjoj, lepljivoj strani su dva spiralna namotaja u kojima se indukuje potrebna energija kada dolazi/odlazi poziv.

zecos · Post by **zecos** » 24-03-2007, 19:26

kako izraditi to u kucnim uslovima ?

.... sta znaci "bondirane" ?/

MladaNada · Post by **MladaNada** » 24-03-2007, 21:00

Ne mozes napraviti u kucnim uslovima i da mozes ne bi bilo isplativo, led su SMD, bez kucista, samo zalivene u smolu (gumu) i povezane sa zavojnicom.

Post by **stojke369** » 24-03-2007, 21:14

A i sigurno im treba mali napon da bi ih pokrenuo.

froid · Post by **froid** » 24-03-2007, 21:54

Kada sam radio elektronske vage morao sam da eliminišem radio-smetnje. Mobilni, na 20cm od štampane ploče, pri uspostavljanju veze, potpuno izludi 7805 tako da u napajanju dobijem skoro 1V smetnji (šta tek radi u glavi). Stavi mob pored CRT monitora ili TV i pozovi ga da vidiš čudo.Prema tome, nije to baš mala energija.
Bondiranje - povezivanje pinova peleta na izvode (veze).

MladaNada · Post by **MladaNada** » 24-03-2007, 23:03

Daje mob sigurno 1-2mA za te diode!

sasa45 · Post by **sasa45** » 26-03-2007, 20:22

Mozda ovo moze da pomogne

Extenzija fajla nije dopustena !

sasa45 · Post by **sasa45** » 26-03-2007, 20:27

Evo ga ponovo

A ovo je prateci tekst

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 cell etc.)

--------------------------------------------------------------------------------

Device purpose:
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.

Circuit operation:
The signal detected by the sensor coil is amplified by transistor Q1 and drives the monostable input pin of IC1. The IC's output voltage is doubled by C2 & D2 in order to drive the high-efficiency ultra-bright LED at a suitable peak-voltage.

Notes:
Stand-by current drawing is less than 200µA, therefore a power on/off switch is unnecessary.
Sensitivity of this circuit depends on the sensor coil type.
L1 can be made by winding 130 to 150 turns of 0.2 mm. enameled wire on a 5 cm. diameter former (e.g. a can). Remove the coil from the former and wind it with insulating tape, thus obtaining a stand-alone coil.
A commercial 10mH miniature inductor, usually sold in the form of a tiny rectangular plastic box, can be used satisfactorily but with lower sensitivity.
IC1 must be a CMos type: only these devices can safely operate at 1.5V supply or less.
Any Schottky-barrier type diode can be used in place of the 1N5819: the BAT46 type is a very good choice.

http://www.elektronika.ba/forum/uploadz ... larDet.gif

zecos · Post by **zecos** » 27-03-2007, 13:47

Ova stvarcica ima bateriju.... sto i nije bas interesantno

Elektronika.ba

Sijalice na mob-u

Sijalice na mob-u

Re: Sijalice na mob-u