electronics.charging_inductor

Inductor is a passive electronic device which stores energy but unlike capacitor, it stores energy in its ‘magnetic field’ or ‘magnetostatic field’.

When inductor is connected to ‘DC’ current source nothing happens it just works like a wire because it’s real effect cannot be seen while ‘DC’ is connected, its not even going to store energy. Inductor stores energy only when it is working on ‘AC’ current.

Connecting a inductor in series with a resistor(when R = 0) to a ‘AC’ potential source, from zero to a finite value causes a sudden voltage to induced in inductor which opposes the current. which results in initially slowly current rise. However it would cease if there is no further changes in current. With resistance zero current will never stop rising.

‘Resistance(ohms) / Inductance(henrys)’ is known as RL-timeconstant. It also represents as τ (tau). While the charging of a inductor with a resistor results in a exponential function.

when inductor is connected across ‘AC’ potential source. It starts to store the energy in its ‘magnetic field’.with the help ‘RL-time-constant’ we can find current at any time in inductor while it is charging.

Functions

charging_inductor(→ float)

Find inductor current at any nth second after initiating its charging.

Module Contents

electronics.charging_inductor.charging_inductor(source_voltage: float, resistance: float, inductance: float, time: float) → float

Find inductor current at any nth second after initiating its charging.

Examples

>>> charging_inductor(source_voltage=5.8,resistance=1.5,inductance=2.3,time=2)
2.817

>>> charging_inductor(source_voltage=8,resistance=5,inductance=3,time=2)
1.543

>>> charging_inductor(source_voltage=8,resistance=5*pow(10,2),inductance=3,time=2)
0.016

>>> charging_inductor(source_voltage=-8,resistance=100,inductance=15,time=12)
Traceback (most recent call last):
    ...
ValueError: Source voltage must be positive.

>>> charging_inductor(source_voltage=80,resistance=-15,inductance=100,time=5)
Traceback (most recent call last):
    ...
ValueError: Resistance must be positive.

>>> charging_inductor(source_voltage=12,resistance=200,inductance=-20,time=5)
Traceback (most recent call last):
    ...
ValueError: Inductance must be positive.

>>> charging_inductor(source_voltage=0,resistance=200,inductance=20,time=5)
Traceback (most recent call last):
    ...
ValueError: Source voltage must be positive.

>>> charging_inductor(source_voltage=10,resistance=0,inductance=20,time=5)
Traceback (most recent call last):
    ...
ValueError: Resistance must be positive.

>>> charging_inductor(source_voltage=15, resistance=25, inductance=0, time=5)
Traceback (most recent call last):
    ...
ValueError: Inductance must be positive.