User Alex

6 votes

4 answers

11k views

What is the bypass capacitor at the emitter of a common-emitter amplifier for?

asked Jul 16, 2017 at 8:43

4 votes

3 answers

17k views

Transient Current in an LC circuit with a DC supply

capacitor inductor transient

asked Mar 18, 2017 at 10:02

4 votes

6 answers

1k views

Reactive power in AC circuit

ac reactive-power

asked Mar 31, 2021 at 7:50

3 votes

2 answers

751 views

Why there is no current in the inductor during the first positive half cycle of the ac voltage?

ac inductor electromagnetism

asked Apr 15, 2020 at 1:12

3 votes

3 answers

83 views

Voltage and current during the first cycle of RL circuit

ac inductor transient

asked Apr 7, 2021 at 2:21

3 votes

4 answers

129 views

Question about Inductor

electromagnetism inductance

asked May 19, 2018 at 19:48

2 votes

3 answers

879 views

Production of electromagnetic waves?

electromagnetism

asked May 22, 2018 at 20:12

2 votes

2 answers

488 views

LC circuit current?

circuit-analysis oscillator

asked May 10, 2018 at 12:07

2 votes

2 answers

493 views

If induced voltage (back-emf) is equal and opposite to applied voltage, what drives the current?

inductor electromagnetism

asked Dec 10, 2019 at 17:54

2 votes

8 answers

819 views

Inductor with AC source

ac inductor back-emf

asked Mar 23, 2020 at 7:55

2 votes

1 answer

3k views

Why do inductive and capacitive reactances have opposite signs and why don't they cancel out each other?

impedance reactance

asked Jun 11, 2017 at 8:58

2 votes

0 answers

75 views

Two port network and transformer?

transformer

asked Dec 15, 2021 at 19:26

2 votes

3 answers

457 views

How does oscillation of reactive power take place between source and load?

ac inductor reactive-power

asked Apr 11, 2020 at 11:44

2 votes

2 answers

717 views

Current waveform in an inductor with AC source

ac inductor electromagnetism

asked Apr 26, 2020 at 18:29

1 vote

1 answer

121 views

Inrush and steady state current in an Inductor with AC voltage

ac inductor electromagnetism

asked Apr 24, 2020 at 18:49

1 vote

2 answers

277 views

How to design a crystal radio receiver on a bread board?

rf radio

asked May 2, 2021 at 6:50

1 vote

2 answers

172 views

Output voltage of LC circuit?

radio passive-filter

asked May 3, 2021 at 6:26

1 vote

2 answers

177 views

Why is there a resistor in this circuit?

resistance voltage-divider thermistor common-emitter thermostat

asked May 8, 2021 at 4:39

1 vote

3 answers

112 views

Equivalent circuit of the transformer primary and secondary

transformer

asked Dec 23, 2021 at 10:26

1 vote

1 answer

77 views

Reason of inductive kick

inductor

asked Dec 27, 2021 at 18:18

1 vote

3 answers

195 views

Flux because of secondary coil in transformer

transformer electromagnetism

asked Nov 21, 2021 at 9:05

1 vote

2 answers

207 views

Difference between real and reactive power

power

asked Nov 26, 2021 at 10:00

1 vote

2 answers

2k views

LC circuit in radio receiver

filter communication radio

asked Jun 1, 2016 at 11:26

1 vote

3 answers

749 views

Phasor and Vector in AC circuit

resistors ac reactance

asked Oct 11, 2016 at 8:30

1 vote

1 answer

109 views

Whats the difference between time changing electromagnetic field and electromagnetic waves?

communication electromagnetism electromagnetic

asked Jan 19, 2017 at 17:13

1 vote

3 answers

2k views

At t=0 the voltage across the Inductor will immediately jump to battery voltage. Why?

inductor electromagnetism transient

asked Mar 18, 2017 at 7:42

1 vote

1 answer

126 views

Phase difference between source voltage and inductor voltage

circuit-analysis ac inductor electromagnetism inductance

asked Mar 22, 2020 at 4:43

1 vote

4 answers

157 views

What is meant by average power in AC circuits?

power reactive-power

asked Apr 10, 2020 at 10:43

1 vote

3 answers

2k views

r(e) Model of a Transistor

transistors amplifier

asked Aug 15, 2017 at 10:00

0 votes

4 answers

5k views

Voltage gain of an amplifier?

transistors amplifier gain

asked Aug 19, 2017 at 6:52

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65 Questions

What is the bypass capacitor at the emitter of a common-emitter amplifier for?

Transient Current in an LC circuit with a DC supply

Reactive power in AC circuit

Why there is no current in the inductor during the first positive half cycle of the ac voltage?

Voltage and current during the first cycle of RL circuit

Question about Inductor

Production of electromagnetic waves?

LC circuit current?

If induced voltage (back-emf) is equal and opposite to applied voltage, what drives the current?

Inductor with AC source

Why do inductive and capacitive reactances have opposite signs and why don't they cancel out each other?

Two port network and transformer?

How does oscillation of reactive power take place between source and load?

Current waveform in an inductor with AC source

Inrush and steady state current in an Inductor with AC voltage

How to design a crystal radio receiver on a bread board?

Output voltage of LC circuit?

Why is there a resistor in this circuit?

Equivalent circuit of the transformer primary and secondary

Reason of inductive kick

Flux because of secondary coil in transformer

Difference between real and reactive power

LC circuit in radio receiver

Phasor and Vector in AC circuit

Whats the difference between time changing electromagnetic field and electromagnetic waves?

At t=0 the voltage across the Inductor will immediately jump to battery voltage. Why?

Phase difference between source voltage and inductor voltage

What is meant by average power in AC circuits?

r(e) Model of a Transistor

Voltage gain of an amplifier?