Me kuke so ku fada DC bias tare da feedback na voltage?

Daidaita Rike Da Turanci Daga Amfani Da Feedback Daga Bakwai

Rike da turanci (DC bias) yana nufin amfani da shirya DC ko kula da tsari don hana cikakken juna da zan iya bayarwa masu aiki a cikin juna, kamar transistors ko operational amplifiers, za su yi aiki a matsayinsu na linar ko a matsayin mai ba da aiki. A cikin masana feedback daga bakwai, misalai rike da turanci zai iya bayyana a kan abubuwan da suka fi sani:

1. Me Kano Feedback Daga Bakwai?

Feedback daga bakwai yana wani mekanismi na negative feedback inda wata baki daya daga shirya ta gida ya zama na feedback zuwa input don haɗa da kontrola gain da na aiki. Muhimman mu'amala na feedback daga bakwai sun hada da operational amplifiers da voltage regulators. Fungun fadada feedback daga bakwai shine maimaita gain errors, saukar da ingantaccen aiki, da kuma tushen takam addini.

2. Matsayin Rike Da Turanci

A cikin masana feedback daga bakwai, rike da turanci yana haɗa da masu aiki (kamar transistors ko operational amplifiers) su yi aiki a matsayin mai ba da aiki (Q-point). Wannan matsayin ya nuna tasirin tsarin bayyana da kuma idan al'adu ya faruwa. Idan rike ba a sanar da shi daidai, al'adu zai zama a matsayin saturation ko cutoff, zai soke idan al'adu ya kasance linar, da kuma zai iya haifar da lalace.

Muhimman matsayin rike da turanci sun hada da:

• Haɗa Da Aiki Na Linar: Tare da sanar da shirya daidai, transistors ko wasu masu aiki suna iya yi aiki a matsayinsu na linar, maimaita saturation ko cutoff. Wannan ya haɗa da bayyana na linar da kuma maimaita distortion.

• Saukar Da Matsayin Mai Ba Da Aiki: Rike da turanci yana taimaka wajen haɗa da matsayin mai ba da aiki hanyar ƙarin ƙasar, yanayi na shirya, da wasu abubuwan da ke faruwa. Wannan yana da muhimmanci don haɗa da sauƙi da ingantaccen aiki na juna.

• Bayyana Tsarin Haɗarwar Aiki: Wasu juna, kamar oscillators ko switch-mode power supplies, sun bukatar rike da turanci na daidai don haɗa da su haɗarwa daidai da kuma su yi aiki daidai.

3. Ingantattun Feedback Daga Bakwai Da Rike Da Turanci

A cikin masana feedback daga bakwai, rike da turanci da feedback mechanisms sun yi aiki a matsayin haɗa da sauƙi da na aiki. Muhimman abubuwan sun hada da:

• Feedback Yana Saukar Da Matsayin Rike: Feedback daga bakwai yana taimaka wajen saukar da matsayin rike. Misali, a cikin operational amplifier, network feedback yana yi adawa akan shirya input don haɗa da shirya ta gida a matsayin shirya daidai. Wannan mekanismi feedback yana maimaita drift a matsayin rike saboda ƙarin ƙasar ko yanayi na shirya.

• Rike Yana Bayyana Reference Don Feedback: Rike da turanci yana bayyana shirya reference don system feedback daga bakwai. Misali, a cikin voltage regulator, shirya rike da turanci yana zama reference, da kuma circuit feedback yana yi adawa akan shirya ta gida tare da farkon shirya ta gida da wannan reference, don haɗa da shirya ta gida daidai.

• Maimaita Self-Oscillation: Rike da turanci na daidai yana iya maimaita juna tare da zama a matsayin self-oscillating. A wasu abubuwa, idan ba a sanar da rike daidai, loop feedback zai iya haifar da positive feedback, zai iya haifar da oscillation. Tare da sanar da matsayin rike daidai, loop feedback zai iya kasance a matsayin negative feedback, maimaita oscillation.

4. Misali: Rike Da Turanci A Cikin Juna Operational Amplifier

Yawan misali operational amplifier (op-amp) na daidai da take amfani da feedback daga bakwai don haɗa da shirya ta gida. Don haɗa da op-amp ya yi aiki daidai, ya kamata ya samu shirya rike da turanci daidai a matsayin input terminals. Gaskiya, an bukata a matsayin input terminals (non-inverting da inverting) suka samun shirya daidai don haɗa da op-amp ya yi aiki a matsayinsu na linar.

• Non-Inverting Input Bias: A wasu juna, terminal non-inverting input zai iya sama da shirya source daidai (kamar voltage divider) don bayyana shirya rike daidai.

• Inverting Input Bias: Terminal inverting input tana iya sama da output tare da feedback resistor, tana samun structures kamar voltage follower ko inverting amplifier. Zabuba feedback resistor yana haɗa da gain da sauƙi na juna.

5. Mafarin Kalmomi

A cikin masana feedback daga bakwai, rike da turanci yana da muhimmanci wajen haɗa da masu aiki su yi aiki a matsayin mai ba da aiki daidai. Wannan yana haɗa da idan al'adu ya yi bayyana na linar, kuma yana haɗa da sauƙi da na aiki na juna. Tare da sanar da rike daidai da amfani da mekanismi feedback, zai iya samun voltage regulation da signal processing na daidai da sauƙi.