Voltage Divider: Ni wapi?

Ni Voltage Divider ni Nini?

Voltage divider ni mkakati muhimu katika eneo la elektroniki ambayo inaweza kupata sehemu ya chaguo chake cha voltage kama matokeo. Inajengwa kutumia viresisti (au component vya passive) mbili na chanzo cha voltage. Viresistini hivi huunganishwa kwa mfano wa series na voltage inapatikana kati ya viresisti hivi.

Mkakati huu unaweza pia kutaja kama potential divider. Chaguo cha voltage kinachopatikana kwenye input kinachodielekea kati ya viresisti (components) za mkakati wa voltage divider. Tangu hii, uchaguzi wa voltage unafanyika. Ikiwa una tafuta usaidizi juu ya hesabu za uchaguzi wa voltage, unaweza kutumia voltage divider calculator yetu.

Mkakati wa Voltage Divider

Kama tulivyosema hapo juu, viresisti viwili na chanzo cha voltage huunda voltage divider rahisi. Mkakati huu unaweza kuundwa kwa njia nyingi kama ilivyoelezwa chini.

Katika picha yenyewe, (A) inarepresenta shorthand, (B) inarepresenta longhand na (C) na (D) inarudia viresisti kwa vitu tofauti na sawa kwa siku zote.

Lakini makakati mengi yote yanafanana kwa maana. R1 ni viresisti linalokuwa karibu na chanzo cha voltage source na R2 ni viresisti linalokuwa karibu na ground. Vout ni voltage drop kwenye viresisti, R2.

Ni divider voltage kweli tunapopata kutoka kwa mkakati huu kama matokeo.

Equation of Voltage Divider in Unloaded Condition

Mkakati rahisi wa voltage divider kwa mujibu wa ground unatarajiwa chini. Hapa, impedances miwili (Z1 na Z2) au components yoyote ya passive zinazounganishwa kwa series. Impedances zinaweza kuwa viresisti au inductors au capacitors.

Matokeo ya mkakati hutolewa kwenye impedance, Z2.

Kutokana na mawasiliano ya output ya open-circuit; hiyo ni hakuna current itafanyika upande wa output, basi

Sasa tunaweza kuprova equation ya output voltage (1) kutumia sheria msingi, Ohm’s Law

Substitute equation (4) in (3), we get

Hivyo, equation imeproka.
The transfer function of the above equation is

This equation is also called as Divider’s

The capacitive divider circuits never allow DC input to pass. They work on AC input.

For an Inductive divider with non-interacting inductors, the equation becomes

The inductive divider divides the DC input analogous to resistor divider circuit depending on resistance and it divides AC input with regard to the inductance.

A basic low-pass RC filter circuit is shown below which comprises of a resistor and capacitor.


C → Capacitance
R → Resistance
XC → Reactance of the capacitor
ω → Radiant frequency
j → Imaginary unit
Here, the divider’s voltage ratio is