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1.2k posts
 
28%
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Q&A Find feedback of circuit

I have this circuit: I think that R3 acts like a feedback path from the output to the input.However I am not sure what will happen if I change the value from 100Ohms to lets say 1kOhms. I have ...

2 answers  ·  posted 3y ago by MissMulan‭  ·  last activity 3y ago by LvW‭

28%
+0 −3
Q&A Capacitance gain using conductive core for inductors [closed]

I have learnt that if we have 2 parallel conductive plates and we seperate them the capacitance is increased if we put a good conductor between the plates. Now the resonant frequency of a inductor...

0 answers  ·  posted 3y ago by MissMulan‭  ·  edited 1y ago by Lorenzo Donati‭

28%
+0 −3
Q&A Current and voltage of inductor

How do I find the current through the inductor and the voltage of the inductor after the switch is closed?

2 answers  ·  posted 3y ago by MissMulan‭  ·  last activity 3y ago by MissMulan‭

28%
+0 −3
Q&A Thermal stability coefficient [closed]

The thermal stability coefficient is defined to be: $S = \frac{dI_{C}}{dI_{CBO}}$ where $I_{CBO}$ is the reverse current of the BJT when voltage isnt applied to the base of the BJT. In case of a ...

0 answers  ·  posted 2y ago by MissMulan‭  ·  closed 1y ago by Nick Alexeev‭

28%
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Meta How to treat data communication questions?

I may be a little bit biased on this one because it was my question which started this thread but : I don't think data communication question should be generally off-topic because it evolves binar...

posted 3y ago by MissMulan‭

Answer
28%
+0 −3
Q&A Phase shift between phase and line quantities [closed]

In a 3 phase Star source-Star load circuit the phase voltage has different phase than line voltage and in a 3 phase Delta source-Delta load circuit the phase current has different phase than the li...

0 answers  ·  posted 3y ago by MissMulan‭  ·  closed 3y ago by Olin Lathrop‭

Question AC-power 3-phase
28%
+0 −3
Meta Why are posts that users clearly approve of being closed?

We have to maintain the focus of the Electrical Engineering board at the electrical engineering level. We will be inundated by laymen questions (electronics use, repair, explaining electronics to ...

posted 4y ago by Nick Alexeev‭

Answer
25%
+0 −4
Meta Can I ask about debugging/fixing a broken product?

Thanks for asking. Repair questions are off-topic, in general. We may consider a repair question, if you explain your specific troubleshooting steps, and you understand the design of the device....

posted 4y ago by Nick Alexeev‭  ·  edited 4y ago by Nick Alexeev‭

Answer
25%
+0 −4
Q&A Electric circuit with antenna

Moderator's note: This is getting ridiculous. You keep posting these drawings that are barely legible. The scribbling is bad enough, but the uncropped images are unacceptable. The image you ori...

1 answer  ·  posted 3y ago by MissMulan‭  ·  last activity 3y ago by Olin Lathrop‭

25%
+1 −7
Q&A Identification of semiconducting electrical components

We identify semiconducting electrical components this way: The first digit represents the number of pn junctions inside the semiconducting device The two or more digit number starting at position...

1 answer  ·  posted 2y ago by MissMulan‭  ·  edited 1y ago by Lorenzo Donati‭

25%
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Q&A Band pass filter given cutoff frequency and bandwidth

My mistake was taking the third relationship $$ \frac{1}{RC} $$ which says how to find the bandwidth of a parallel RLC filter but we have a series RLC filter. Now solving the system : $$ LC = 100...

posted 2y ago by MissMulan‭  ·  edited 2y ago by MissMulan‭

Answer
25%
+0 −4
Q&A DC-DC converter using Hartley oscillator and transformer [closed]

Instead of using a buck or a boost converter can we use for DC-DC conversion the circuit Im going to describe in the next lines? First we begin with a Hartley oscillator whose output is fed into ...

0 answers  ·  posted 2y ago by MissMulan‭  ·  edited 1y ago by Lorenzo Donati‭

25%
+0 −4
Q&A Fuse monitoring on multiple batteries [closed]

Looking for KalleMP who last commented on the link attached. https://electronics.stackexchange.com/questions/368517/remotely-monitor-condition-of-fuse#:~:text=R1 %26 the LED are the basic indicato...

0 answers  ·  posted 1y ago by Natti‭  ·  closed 1y ago by Olin Lathrop‭

Question boost-converter
22%
+0 −5
Q&A BJT common emitter amplifier equivalent circuit (π hybrid model) [closed]

Im studying the equivalent model of a BJT common emitter amplifier at high frequencies.At university we tought that the BJT at high frequencies looks something like this: However when designing ...

0 answers  ·  posted 2y ago by MissMulan‭  ·  closed 2y ago by Olin Lathrop‭

22%
+0 −5
Q&A Designing a circuit to verify thevenin theorem with induction motor as load [closed]

Design a suitable experiment and an AC circuit to verify Thevenin's theorem when the load is a single-phase induction motor with a capacitive start and two supplies feed the load. Ratings of load:...

0 answers  ·  posted 2y ago by dkumar94600‭  ·  edited 1y ago by Lorenzo Donati‭

22%
+0 −5
Q&A edison and tesla [closed]

what diffrence between tesla and edison? can anyone help me who come first?

0 answers  ·  posted 1y ago by kEKIVI‭  ·  closed 1y ago by Mithical‭

Question AC-power
22%
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Q&A Why won't this Globe Electric Dimmable LED securely fit my IKEA November Lamp? [closed]

On the LEFT is what I just bought today — Globe Electric 4W (40W Equivalent) Daylight (5000K) Dimmable LED Light Bulb, G9 Bi-Pin Base, 400 Lumens, 15,000 H. Here's Globe Electric's Dimmer Compatibi...

0 answers  ·  posted 3y ago by TextKit‭  ·  closed 3y ago by Olin Lathrop‭

20%
+0 −6
Q&A Electrolytic vs ceramic capacitors about self-resonance frequency

Which capacitors have smaller self resonance frequency?I would bet my money on electrolytic capacitors because they are usually much bigger than the ceramic capacitors however I don't know if they...

1 answer  ·  posted 3y ago by MissMulan‭  ·  edited 1y ago by Lorenzo Donati‭

20%
+0 −6
Q&A Need help design a digital circuit which divides two binary numbers [closed]

Before the circuit here are the digital blocks which have been already designed and exist as part of the division block 1 bit subtractor: 2 bit subtractor(in the digital block diagram of the di...

0 answers  ·  posted 2y ago by MissMulan‭  ·  edited 1y ago by Lorenzo Donati‭

20%
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Meta Misuse of mod privilege?

This question may be only for @Olin Lathrop but I would like to hear others opinion When I had asked the question he just said that "What's the question?"- 'This "question" is just lecturing on co...

2 answers  ·  posted 2y ago by deleted user  ·  last activity 2y ago by ArtOfCode‭

20%
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Q&A Band pass filter given cutoff frequency and bandwidth

I have decided to try design a band-pass filter with a cut-off frequency of 10kHz and bandwidth of 2 Hz. $$ \frac{1}{\sqrt{LC}} = 10001 \rightarrow LC = 1/100020001 sec^{2}$$ $$ \frac{R}{L} = 2...

2 answers  ·  posted 2y ago by MissMulan‭  ·  edited 1y ago by Lorenzo Donati‭

16%
+0 −8
Q&A HOW TO OPTIMIZE POWER USAGE FOR HOME [closed]

I HAVE A METER LIKE THIS BEHIND MY HOUSE MY NEIGBOR SLOWED IT DOWN SOMEHOW HE SAID HE OPENED IT UP AND DID SOMETHING TO IT NOW HE PAYS LOWER ELECTRICAL BILLS THAN ME BUT HE HAS COLLEGE DEGREE IN ...

0 answers  ·  posted 3y ago by ElectroRat‭  ·  edited 3y ago by Olin Lathrop‭

Question AC-power