# Tagged Questions

57 views

### Ideal inductor in series with a resistor:

The question is to find the thevenin equivalent circuit across a and b. The inductors are ideal transformers. I stretched the inductors 180 degrees to make the circuit easier to analyze. From ...
142 views

### wiring a blender motor

So I've salvaged a motor from a blender that was not in use- the only thing is I haven't got a clue how I would wire it. I want to make sure I have the correct setup, since it operates at 230V. So my ...
156 views

### Electronic AC surge protection - modify circuit

I was asked for help with designing an electronic AC overvoltage protection. My buddy was able to design this so far: However he has no more time for this project and I would like to finish it. He ...
235 views

### AC DC Analysis of diode

in the following circuit: Im looking to find what $v_D(t)$ is given $V_γ = 0.7 V$ and $r_f = 0$. Now when doing the DC analysis, find that $VDQ = 0.7 V.$ But im having trouble finding ...
54 views

i m trying to connect a de sauty's bridge(AC bridge) output to a precision rectifier. The problem is the output of the bridge (AC bridge) changes drastically to 5volts as soon as the connection is ...
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### Mosfet Circuits Voltage

So let's take a simple cmos circuit like this: So I get that for DC analysis $V_G = 12 \frac{R_2}{R_1+R_2}$ and then $V_{GS}$ makes sense to me...because there is a constant $V_G$ value ...
109 views

### Can someone explain impedance in simplest way? [duplicate]

I know in DC it is Resistance of the load. In AC is it impedance of a line correct? can someone please help me understand impedance and types of impedance. Zero Sequence, Positive sequence and 2 ...
166 views

### Electrical circuit / transformer in series?

I would like to pull out 5v 3A max in series from an already existing connection from the mains 240v 40A connection. Current circuit: What I would like to implement: What are the possible ...
245 views

### AC analysis from a DC fresh grad/point of view

So i was finished taking DC circuits and im adept at basic laws like KCL, KVL and Ohms. But today im taking AC circuits and i wondered why things dont work well as before. Lets take this example A ...
256 views

### Basic ac circuit analysis

When are we going to append the "j" term when analyzing ac circuits. When i say j term, im pertaining to opposition to current/impedance. In the image below, notice that Xl is not written as jXl. When ...
844 views

### Supplying ac to a dc circuit

So a while ago, i was stumbled upon a post what will happen to the dc circuit when we supply ac to it. Lets assume the ac has the same voltage as the dc. We know that ac switches direcions so there ...
244 views

### what is the magnitude of total voltage in the below circuit?

I was working on some RLC circuits and I found a question something like this. In series RL circuit, $V_R$ = 4V and $V_L$ = 3V. what is the magnitude of total voltage ? I just thought $V_T$ = ...
172 views

### Can anyone explain how this circuit works?

This is from an electric portable stove.
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### need a circuit that can switch motor direction by photo or timer input

I have a reversible 115 volt ac motor that has its own internal limit switches to cut the power. It has 4 wires to the motor green-ground and red-hot ,black-hot, and white-neutral. If I have the red ...