# Questions tagged [circuit-theory]

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### Transistor analysis with 2 voltage sources

I want to calculate the DC currents of this circuit, and based on the superpostion theorem, I thought of ignoring Vqdc9 first, in order to calulate I2, I21 and I22, as shown in figure 2. After that, I ...
84 views

### How do I use Norton's Theorem to find the current in this resistor? [closed]

I've been trying to solve this question but it seems impossible
50 views

### Mesh Current Method and Analysis DC

This is my approach so far: simulate this circuit – Schematic created using CircuitLab I'm having problems with the third loop, only because of the fact that there are two batteries that are ...
1k views

### Do higher voltages cause heating?

I'm trying to wrap my head around energy consumption in general. For some background info, I'm an engineering student and am familiar with the usual electrical engineering formulae Here is what caused ...
138 views

### How do you prove that a certain circuit is impossible to construct with a certain amount of switches?

I wanted to make a subcircuit, which, if viewed as a black-box, is a two-terminal device, which can behave as a closed circuit (0 Ω) 25 Ω 50 Ω an open circuit (∞ Ω) (sans non-idealities of course; i....
124 views

### Is it possible to constrain a circuit's voltage supply to a specific voltage range?

I have a circuit which requires exactly 12v to work properly, with a maximum tolerance of ±0.5V. The circuit is arbitrary and one can think of it as a theoretical question, but let's say that it ...
102 views

### Books on network theory [closed]

I really want to know which books should I read to learn the subject- Network theory in electrical engineering. I know there are some popular books out there in the market, but I will really ...
236 views

179 views

### Determining the Thevenin Equivalent

How could I proceed with this circuit to determine the Thevenin Equivalent? I have the values of $R_1, R_2, R_3, I_2$ and the time value for g. I first tried to figure out the total voltage for the ...
1k views

### Why the opposite of the passive sign convention is not the active sign convention?

Studying the fundamentals of circuit theory, I was reading the Wikipedia article on the Passive Sign Convention and found out about the Active Sign Convention (ASC). After searching many introductory ...
195 views

### How is voltage divided between two reverse-biased ideal diodes?

Suppose we have two identical ideal diodes (without any resistance or voltage drop). We connect these two diodes in series, in the same direction, and reverse-bias them with voltage V. Now we have two ...
1 vote