Mai shi ne PWM?
Zuwa na PWM?
Takardunin PWM pulse width modulation
PWM pulse width modulation (PWM) shine hukuma a lura da abubuwan signal na analog zuwa digital. Ta haka tana iya samar da signal na analog mai ma'ana ta kadan.
Siffofinta
Siffofin siffar PWM shine a yi amfani da output na digital daga microprocessor don kontrola circuit na analog. An yi amfani da square wave da take da frequency mai tsarki a matsayin carrier signal, kuma an kontrola voltage na biyu cikin output signal tare da karfin da ya kawo da duty cycle na square wave (wanda yake magana a kan tsari).
Fadada PWM
Gaskiya: Saboda PWM ta yi amfani da switch state na full on ko full off, ba kamar linear regulation, ana iya kwar shirye-shiryen kwamfuta da kuma hoton kisa.
Yadda ake kontrola: Ana iya kawo karfi don kawo duty cycle don kawo karfi don output voltage ko power.
Duk fadada: Saboda signals na PWM suna da nuna na digital, suka fi shiga noise mafi yawa da signals na analog.
Inganci: Ana iya amfani da PWM a wurare da dama, ciki har da motor control, power conversion, audio amplifiers, da sauransu.
Mafashan PWM
Electromagnetic interference (EMI): Karamin PWM signals zai iya haɗa da electromagnetic interference, kuma ana bukata a yi addinin bayanai don kudin wannan nasara.
Matsayin inganci: Don samun PWM control da gaskiya, ana bukata a yi addinin bayanai don kudin wannan nasara.
Switching loss: Hakanan ita ce mafi gaskiya a bincike da linear regulation, akwai mafi yawan loss a lokacin switching.
Fananin amfani
Motor control: Ana iya amfani da shi don kontrola speed da kuma direction na DC motor.
Power conversion: kamar inverter na DC/AC, converter na DC/DC.
LED lighting: Brightness na LED ana kontrola ta da PWM.
Audio amplifier: Design for high-fidelity audio amplifiers.
Tsarin yanayi
Frequency masu yawan da gaskiya
Kontrola mai kyau
Integration da kuma miniaturization
Bayanai
PWM pulse width modulation shine teknologi mai muhimmanci a cikin elektronika, wanda tana da fadada gaskiya da energy saving, gaskiya, fast response speed da kuma gaskiya. Da yanayin teknologi na elektronika, za a yi amfani da teknologi na PWM a wurare da dama, kuma za a yi kawo karfi da kudin wannan nasara.
