Tarewa oscillator: iri, aiki ka'idodin

Tarewa oscillator - An cikin shakatawa bugun jini janareta da aka yi dangane da shi wani aga rabi (msl, transistor) tare da wani karfi feedback gidan wuta. A mafi yawan amfani da tabbatacce feedback.

Amfani ko rashin amfani

A amfani da irin wannan janareto aka dauke su gwada da sauki, da ikon gama load ta hanyar da gidan wuta. A siffar generated hatsaisai ne kusa da rectangular, kai dubban wajibi sake zagayowar, tsawon - daruruwan microseconds. A iyakance bugun jini maimaitawa mita har zuwa dama da ɗari kHz. Capacity oscillatory haihuwarka a irin wannan na'urorin ne kananan, kuma yana lalacewa ta hanyar interturn capacitances, ba shakka, shigarwa iya aiki. Saboda wadannan halaye tarewa oscillator ne yadu amfani a cikin yi da: a aiki da na'urorin, masana'antu da kuma tsari lantarki.

A hasara daga wadannan janareto ne dogaro da mita na canje-canje a cikin wadata irin ƙarfin lantarki. Da zaman lafiyar na mita ne m fiye da abin da na multivibrator ne kawai 5-10 kashi.

Tarewa oscillator, tattara ta m Grid juna ko da wani resonant kewaye da aka saurare zuwa mita na bugun jini maimaitawa, tare da kulle diode, yana mai gwada high kwanciyar hankali na oscillation. Frequency kwanciyar hankali a wannan makircinsu, kasa da kashi daya.

Akwai da yawa makircinsu domin aiwatar da irin wannan janareto: fitilar transistor tare da wani tushe biya diyya transistor da emitter-guda biyu, tare da m net a riba mataki, su ɗauko da sauran.

A hoto na nuna wani mai tarewa oscillator a kan su ɗauko.

A mafi m na'urar samu a al'ada transistors. A irin wannan na'urorin yawanci amfani da bugun jini gidajen wuta. A janareta iya aiki a wani kulle yanayin, an sauƙi aiki waje sigina.

Tarewa oscillator, da aiki da manufa

Operation da kewaye ne zuwa kashi da dama, saukarwa. Mataki Daya: kwance allon transistor faruwa a lokacin shigar da bugun jini da emitter. The na'urar fara aiki. Lokacin da tushe na transistor sami wata ƙõfa halin yanzu, shi sa da cajin jari da kuma karuwa da tara halin yanzu. Ta hanyar resistor ne tabbatacce feedback, aiwatar da windings na bugun jini gidan wuta murna da ambaliyar ruwa aiwatar girma tushe, da haraji, igiyoyin da kaya halin yanzu. Wannan rage-rage wani m bambanci tsakanin emitter da kuma tara daga cikin transistor lõkacin da ta kai sifili, naúrar shiga wani jikewa jihar. Mataki na biyu: sakaci da primary Tuddan juriya, mu yi imani da cewa nada shi ne cikaken tare da DC ƙarfin lantarki. A sakamakon haka, da sauran windings na gidan wuta ƙarfin lantarki ne ma canzawa. Character gyare-gyare kewaye igiyoyin ne m da dukiya na sarƙoƙi da cewa suna da alaka a jerin tare da sakandare windings, kazalika da kaddarorin da gidan wuta core. Alal misali, yanzu za ka yi haƙuri a resistive load. Yanzu a kan tushen da akai na transistor, amma ya fara rage lokacin caji da capacitor. The tara halin yanzu da aka ƙaddara da Naira Miliyan Xari da magnetizing halin yanzu da kuma mai shudewa yanzu windings. A magnetizing halin yanzu ƙaruwa, girma hysteresis madauki ne m da yanayin da zuciyar abu. Saboda haka, yana ƙaruwa da kuma na yanzu haraji. Wannan sa transistor zo daga jikewa, bugun jini ganiya da aka kafa. The tara halin yanzu shi ne sake dogara a kan girma da tushe cajin, da kuma tushe na yanzu a wannan ambaliyar ruwa ya fara raguwa. Transistor kulle, bugun jini sashe ne kafa. Lokacin da kulle na'urar tarewa oscillator fara mai da asalin jiha.