Likarolo tsa Temperature Compensated Crystal Oscillators (TCXO) ke life?
Temperature Compensated Crystal Oscillator (TCXO) ke mofuta oa kristale oscillator e bolokang tlhahiso e tsitsitseng ea maqhubu tlas'a maemo a fapaneng a mocheso. E kenyelletsa le potoloho ea matšeliso a mocheso ho kokobetsa tšusumetso ea liphetoho tsa mocheso tikolohong ho maqhubu a oscillation, ho netefatsa hore ho na le matshwao a phahameng-a tshupanako a nepahetseng libakeng tse fapaneng. Li-TCXO li arotsoe haholo ka mekhahlelo e meraro: matšeliso a tobileng, matšeliso a sa tobang, le matšeliso a digital.
Litšobotsi tse Tloaelehileng tsa TCXOs
Botsitso bo Phahameng: E fana ka tlhahiso e tsitsitseng ea maqhubu holim'a mefuta e mengata ea mocheso, e fokotsang tšusumetso ea ho fapana ha mocheso ts'ebetsong ea lisebelisoa.
E Nepahetse Haholo
Tšebeliso e Tlase ea Motlakase: Hangata e etselitsoe tšebeliso e tlase ea matla a lisebelisoa tsa cellular le {0}lisebelisoa tse tsamaisoang ke betri{0}ho lelefatsa bophelo ba betri.
Lerata la Phase e tlase: Meetso e meng ea TCXO e boetse e fana ka litšobotsi tsa lerata tse tlase, tse bohlokoa haholo bakeng sa lits'ebetso tsa puisano le lits'ebetso tse ling tse amehang ho sitisoe ke matšoao.
Matšeliso a tobileng TCXO
Matšeliso a tobileng TCXO e sebelisa potoloho ea matšeliso a mocheso e entsoeng ka li-thermistors le lisebelisoa tse thibelang likokoana-hloko -, tse hokahaneng ka lihlopha le quartz crystal resonator ho oscillator. Ha mocheso ambient fetoha, ho hanyetsa thermistor le lekanang letoto la capacitance ea kristale fetola ka tsela e loketseng, ka tsela eo offseting kapa ho fokotsa ho hoholeha mocheso oa maqhubu a oscillation. Mokhoa ona oa mats'eliso o fana ka melemo e joalo ka potoloho e bonolo, litšenyehelo tse tlase, le litlhoko tse fokotsehileng tsa boholo ba potoloho e hatisitsoeng (PCB) le sebaka, e leng se etsang hore e tšoanelehe haholo bakeng sa ts'ebeliso e kopaneng,{3}}ea motlakase e tlase, le e tlase{4}ea hajoale. Leha ho le joalo, e ka 'na ea se ke ea finyella litlhoko tsa ho nepahala ha kristale oscillator ho feta ± 1 ppm.
Matšeliso a sa Tobang TCXO
Matšeliso a sa Tobang Analoji: E sebelisa likarolo tse utloang mocheso- tse kang thermistor ho etsa thempereichara-ho{2}}ho{2}}phetolo ea phetolo ea motlakase. Matla a hlahisoang a sebelisoa ho varactor diode e kopantsoeng letotong le kristale resonator. Phetoho ea letoto la capacitance ea kristale resonator e lefella maqhubu a se nang moeli a resonator. Mokhoa ona oa matšeliso o ka finyella ho nepahala ho phahameng ho ± 0.5 ppm empa o ka fokotsoa lits'ebetsong tse sebetsang ka tlase ho 3V.
Digital Indirect Compensation: E eketsa analoge-ho-ho{1}}converter ea dijithale (A/D) le digital-ho{3}}analoge (D/A) converter ka mor'a thempereichara{4}}ho{5}}ho{5}}ho fetolela motlakase ho setup ea matšeliso ea analoge. Letšoao le tsoang ho sensor ea mocheso le fetoleloa ho letšoao la dijithale ke converter ea A / D, ebe e khutlela ho letšoao la analog ke converter ea D / A, 'me qetellong e khanna diode ea varactor ka potoloho e ts'oanang. Mokhoa ona o nolofalletsa matšeliso a mocheso a itekanetseng, e leng se hlahisang botsitso bo ikhethang ba maqhubu a kristale oscillator. Leha ho le joalo, potoloho ea matšeliso e batla e rarahane ebile e bitsa chelete e ngata.
Dijithale TCXO
Digital TCXOs li sebelisa theknoloji ea ho sebetsana le matšoao a dijithale bakeng sa matšeliso a nepahetseng a mocheso. Li kopanya sensor ea mocheso, converter ea A / D, potoloho ea matšeliso ea dijithale, le converter ea D / A ka hare. Likarolo tsena li lekola mocheso o teng ka nako ea 'nete le ho lokisa maqhubu a oscillation ka nepo o sebelisa li-algorithms tsa dijithale. Mokhoa ona oa matšeliso o fana ka melemo e kang ho nepahala ha matšeliso a phahameng, lebelo la ho arabela ka potlako, le botsitso bo babatsehang, le hoja e tla ka litšenyehelo tse batlang li phahame.