cari artikel disini

Memuat...

Kamis, 24 Maret 2011

Alarm mobil anti maling circuits

Alarm mobil anti maling circuits



This FM radio-controlled anti- theft alarm can be used with any vehicle having 6- to 12-volt DC supply system. The mini VHF, FM transmitter is fitted in the vehicle at night when it is parked in the car porch or car park.

The receiver unit with CXA1019, a single IC-based FM radio module, which is freely available in the market at reasonable rate, is kept inside. Receiver is tuned to the transmitter's frequency. When the transmitter is on and the signals are being received by FM radio receiver, no hissing noise is available at the output of receiver. Thus transistor T2 (BC548) does not conduct. This results in the relay driver transistor T3 getting its forward base bias via 10k resistor R5 and the relay gets energised.

When an intruder tries to drive the car and takes it a few metres away from the car porch, the radio link between the car (transmitter) and alarm (receiver) is broken. As a result FM radio module gene-rates hissing noise. Hissing AC signals are coupled to relay switching circ- uit via audio transformer. These AC signals are rectified and filtered by diode D1 and capacitor C8, and the resulting positive DC voltage provides a forward bias to transistor T2. Thus transistor T2 conducts, and it pulls the base of relay driver transistor T3 to ground level. The relay thus gets de-activated and the alarm connected via N/C contacts of relay is switched on.

If, by chance, the intruder finds out about the wireless alarm and disconnects the transmitter from battery, still remote alarm remains activated because in the absence of signal, the receiver continues to produce hissing noise at its output. So the burglar alarm is fool-proof and highly reliable.

Tidak ada komentar:

Poskan Komentar

Terima kasih atas komentar anda salam sahabat!!! Rudi thea

Follow by Email

Next

Artikel yang mungkin belum Anda baca

Terbaru

Get this widget here

cartegori

Access 2013 (1) air terjun (2) AIWA AKARI AKIRA (1) alam indonesia (2) alat2 rumahtangga dan listrik (4) aneh tapi langka (1) aneh tapi nyata (3) animasi (4) Antariksa (3) artikel ku (1) artis indonesia (1) bagai mana cara mencari kerusakan tv (33) bagian prosesor luminance (Y) (3) BEBERAPA PERSAMAAN IC VERTIKAL (1) Bencana alam (4) Berita-tekhnologi (36) bisnis (2) bisnis online (7) bmkg (1) book speker (1) bunga aneh (3) bus (1) cara buang virus ponsel (1) cara membuat gemuk (1) Cara mengganti nama blog (2) CARA MERAKIT SEMATIK TV (10) cara serpis dvd (18) cara service (12) cara service tv(elektronics) (161) cara servis monitor (10) cara setting lewat menu factory tv (10) CHINA BRAND (1) Crara Service Mode Tv (1) crt (3) CTV Polytron (6) daerah (1) dan fb (1) Dekorasi (enetrtainment) (4) digitec (2) Dunia (1) dvb (2) DVD programming (14) Excel 2013 (1) facebook internet (15) facebook timeline (1) gacun (1) garis besar bagian lemari es (1) garis besar mesin tv (6) garits video gratis audio (9) GOLDSTAR HITACHI JVC LG (1) gratis dwnload (2) html (5) IC (1) intel (1) internasional (3) internet mobile (10) inverter (1) jabar (53) jalan raya (1) jejaring sosial (1) kata kata ucapan selamat tidur yang romantis (3) kata mutiara (1) kecelakaan (11) kerusakan haredware komputer (43) kerusakan lcd monitor (3) KERUSAKAN software TV (7) kerusan tv dan penyebab nya (48) kilas berita (133) kode ponsel (1) kode remote. (3) kode servis (4) KODE TV (2) koneksi internet (32) lampu neon (2) link ku (1) macam macam kerusakan tv (20) manca negara (2) manfaat tumbuhan buat kesehatan (12) MENGENAL MENGUKUR KOMPONEN ELEKTRONIKA DASAR (19) menurut penalaman (2) mesum (2) Microsoft Office (1) minimax (4) modem (1) MODIPIKASI TV (8) nasional (78) olah raga (1) OneNote 2013 (1) otomotip (1) Outlook 2013 (1) panasonic (1) PANASONIC POLYTRON (1) Pasang Sendiri Parabola (2) pbt (1) pemancar (2) PERKEMBANGAN ELEKTRONIC (4) persamaan ic (3) PERSAMAAN TR HORIZONTAL (1) photo bugil (1) photo edit (2) pla (1) plash message teks berjalan (1) Playstation (1) plyback (2) politik (1) polytron (9) polytron data servis (5) polytron u slim gambar melengkung. (5) poto (6) poto artis sexi (4) poto sexi (3) power (2) power splay (6) PowerPoint 2013 (1) Project 2013 (1) Publisher 2013 (1) rangkain inverter (3) raster gelap (1) remot control (2) remot tv (2) REMOT UNIVERSAL (1) resistor (3) sains (1) SAMSUNG SANYO (1) satelit Rusia Techno (1) seputar entertainment (10) serba gratis.cari yg gratis. video baru. mp3.pemutar mp3. mp3 gratis. (13) Service Menu Philips (1) Service Mode LCD Monitor (2) servis lcd monitor (3) SERVIS MODE (10) sharp (1) SHARP SONY TCL (1) siaran tv analog (2) siaran tv digital (2) skema (3) sms gratis (2) software gratis (3) sound system (1) STB DVB-T2 (1) stelit (1) subwoper (1) Sukabumi (1) susnan perangkat audio di lapangan (1) tan (1) tanaman aneh (3) tcl (4) televisi dan keluarga (5) telkomsel (1) tempat wisata alam (6) Tips Blog/webssite (51) Tips Blog/webssite/html (34) Tips pertanian (6) tips software komputer (57) tips trik elektronic (27) tips trik facebook (10) tips trik komputer (44) TOSHIBA (1) tours (1) transtistor (5) trapo (5) tutorial blog (7) tv china (12) tv komputer (4) TV MENU SERVIS KODE (14) twetter (1) ucapan hari raya idul fitri (3) ucapan selamat (4) ucapan selamat hari ibu (1) ucapan selamat hari raya idul adha (1) ucapan selamat tidur buat pacar (2) ucapan selamat tidur untuk kekasih (3) ucapan tahun baru (1) ulang tahun (1) universal (1) video porno (1) Visio 2013 (1) Widget Check Berat Blog (2) Windows 8 (11) Wisata Baharia (2) Word 2013 (1)

Entri Populer