Prinsip kerja pembanding analog dan aplikasi praktisnya

Misali da Farkon Amfani na Analog Comparators

Analog comparator ita ce babban komponenti na elektronika wadanda ake amfani da shi don kada wasu hanyoyi masu siffar da kuma bayyana fayilta. Yana da amfani mai yawa a wasu tsohon elektronikinsa. Duk da cewa, za a bayyana misalai da kuma amfani na analog comparators.

Misali

Tushen Ba:

• Analog comparator yana da differential amplifier da biyu masu hanyoyi: hanyar hanyoyin haske (non-inverting input, +) da hanyar hanyoyin haske (inverting input, -).

• Hanyar fayilta yana ba da alamun binan da ya nuna halitta daga hanyoyin hasken biyu.

Kiyaye:

• Idan hasken a hanyar hanyoyin haske (V+ ) yana da gaba da hasken a hanyar hanyoyin haske (V−), fayilta ta comparator yana zama tsakiyar VCC (supply voltage).

• Idan hasken a hanyar hanyoyin haske (V+ ) yana da kadan da hasken a hanyar hanyoyin haske (V−), fayilta ta comparator yana zama kadan GND (ground).

Daga riyarmar, wannan zai iya rubuta:

Hysteresis:

Don bincike comparator daga kawo fayilta a kan lokacin da hasken hanyoyi suna da kafin gaba, ana iya amfani da hysteresis. Hysteresis an samu ne a kan adda resistors a positive feedback loop, wanda ya kafa wurin kadan da fayilta zai kawo, kuma yana zama masu inganci a cikin system.

Amfani Mai Yawa

• Zero-Crossing Detection:A maimakon amfani da comparators don kada zero-crossing points na AC signal. Misali, a tsohon power management circuits, comparator zai iya kada zero-crossing points na AC power supply don kawo kalmomin kiyaye waɗannan circuits.

• Voltage Monitoring:A maimakon amfani da comparators don kada idan supply voltage yana da gaba ko kadan darajar. Misali, a battery management systems, comparator zai iya kada idan battery voltage yana da kadan, wanda zai haɗa alarm ko kuma kawo kalmomin kiyaye waɗannan system.

• Signal Conditioning:A maimakon amfani da comparators don kada analog signals da ke faruwa zuwa square wave signals. Misali, a communication systems, comparator zai iya kada analog signal zuwa digital signal don kiyaye waɗannan kalmomin kiyaye.

• Pulse Width Modulation (PWM):A maimakon amfani da comparators don kada fixed reference voltage da sawtooth waveform don kawo PWM signal da adjustable duty cycle. Wannan signal ana amfani da shi a motor control, LED dimming, da kuma power converters.

• Temperature Monitoring:A maimakon amfani da comparators don kada temperature monitoring circuits. Misali, resistance of a thermistor yana canza da temperature, comparator zai iya kada wannan canza zuwa switch signal don kiyaye waɗannan kalmomin kiyaye heaters ko coolers.

• Optical Detection:A maimakon amfani da comparators don kada optical detection circuits. Misali, output current of a photodiode yana canza da light intensity, comparator zai iya kada wannan canza zuwa switch signal don automatic lighting control ko security systems.