Karamin Kirkiya na Siffofin Tsakiyar Karami

Me kadan RL Circuit?

RL circuit (ko da ake kira RL filter ko kuma RL network) yana nufin cikakken kula mai elementoïn cikakken kulan passive na resistor (R) da inductor (L) wadanda suka shirya, wadanda ke kula da voltage source ko current source.

Saboda cewa akwai resistor a cikakken kulan ideal, zan iya bayarwa tafkin, kamar RC circuit ko RLC circuit.

Wannan ba ce ita ce cikakken kulan ideal na LC circuit, wadanda bai ba ta bayarwa tafki ba saboda babu resistor. Amma wannan ana gudanar da cikakken kulan ideal, a cikin rayuwar, LC circuit za'a bayarwa wasu tafki saboda resistance na component da connecting wires.

Amsa cikakken kulan RL na biyu wadanda resistor, R da inductor, L suka shirya a nan da voltage supply na V volts. Za mu fahimta cewa current an yi a cikakken kulan shine I (amp) da current through resistor da inductor shine IR da IL respectively. Saboda akwai resistor da inductor a nan da suka shirya, don haka current a elementoyi da cikakken kulan ba za su dace ba. Yani IR = IL = I. Amsa VR da Vl voltage drop across resistor da inductor.

Amfani da Kirchhoff voltage law (yana nufin sum of voltage drop must be equal to apply voltage) zuwa wannan cikakken kulan muna samu,

Phasor Diagram for RL Circuit

Abin da ya zo ne a cikin drawing the phasor diagram of series RL circuit, ya kamata a duba relationship between voltage and current in case of resistor and inductor.

1. 
   

1. Resistor
   A cikin resistor, voltage da current suna cikin fase na sama ko ake kiran cewa phase angle difference between voltage and current shine zero.

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1. Inductor
   A cikin inductor, voltage da current ba su cikin fase ba. Voltage leads that of current by 90o ko kuma ake kiran cewa voltage attains its maximum and zero value 90o before the current attains it.

1. RL Circuit
   For drawing the phasor diagram of series RL circuit; follow the following steps:

Step- I. A cikin series RL circuit, resistor da inductor suka shirya a nan, don haka current flowing in both the elements are same i.e IR = IL = I. So, take current phasor as reference and draw it on horizontal axis as shown in diagram.
Step- II. A cikin resistor, both voltage and current are in same phase. So draw the voltage phasor, VR along same axis or direction as that of current phasor. i.e VR is in phase with I.

Step- III. We know that in inductor, voltage leads current by 90o, so draw VL (voltage drop across inductor) perpendicular to current phasor.
Step- IV. Now we have two voltages VR and VL. Draw the resultant vector(VG) of these two voltages. Such as,
and from right angle triangle we get, phase angle


CONCLUSION: A cikin pure resistive circuit, the phase angle between voltage and current shine zero and a cikin pure inductive circuit, phase angle shine 90o but when we combine both resistance and inductor, the phase angle of a series RL circuit is between 0o to 90o.

Sada