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I just made a post about using "company tags" over at Software Development: We know from SO that company name tags were always problematic since: Questions are about products, not companies. Gi...
Is it because for AC signals the emitter looks like a short to ground and that essentially increases the voltage drop across the collector resistor? Yes. The gain of a common emitter amplifier is...
It is some manner of BJT or MOSFET LED driver similar to for example this: NCR402T (just a random example, this one was PNP). They are literally called "SOT23 LED driver" (Mouser calls them "SOT23...
I just felt like what if we have a separate section for code reviews. This section is strictly meant for code reviews in domains like DSP, VLSI( for instance "Verilog" programming) ,Embedded system...
Simple thing that I realized I should know but do not -- when is an MOV preferable to a TVS diode (with some associated network to really make it work, in both cases)? Is it even something to routi...
I'm not sure there's a technical reason, except usually the offered parts are multi-topology and then they could be listed as buck-boost while they at the same time could as well be used as flyback...
The input and output impedance of these amplifier is 50 Ohm. You don't need to measure them. That's because they are intentionally matched to the characteristic impedance of the coaxial cables tha...
MOV are bidirectional components suitable for both AC and DC circuits, TVS are most often unidirectional, despite bidirectional TVS are also available; conducts more current compared to TVS diod...
This sounds like it could be a Paper (https://electrical.codidact.com/categories/35) if written up nicely. It doesn't make sense as a question because you're telling, not asking. I haven't heard ...
Since we are trying to keep the impedance matched to 50 ohms, what is the best strategy to approach this circuit? A low pass $\pi$ network seems a good route to go. Basically your $\pi$ networ...
My question is trying to understand if there is an effect on the switching time, on both turn-on and turn-off, between the following configurations. A mirror set up to switch a current, and there ...
Sometimes cables between utility poles make a loop and do a U-turn. What is the purpose of such loops? The loop I'm asking about is in the lower set of wires towards the left of the picture. The...
First, let's redraw the circuit a little more clearly, with logical flow left to right. This also protects the answer from possible changes to the question. As you say, Q1 is a switch to control ...
If the external power supply to a device fails, and I can't get the exact model, what do I need to specify to get the right replacement? I can re-use the old supply's connector, but what about the...
If you search through the electrolytic capacitor offerings from distributors like Farnell, RS, Digikey or Mouser, you find that the maximum life-time rating is commonly quoted as 5,000 or 10,000 ho...
What would be the main considerations to use Pi-filters for EMC? Using the filter correctly and understanding its limitations EMC or EMI (electromagnetic interference) is noted for its high frequ...
I have seen pi-filters using chokes, ferrite-beads, and plain inductors as the L-element What are the main differences between them? when use one or other?
I'm trying to drive a relay according to a 5 V digital signal, using this circuit: It works for a while, but then the transistor fails. When I replace the transistor, it works for a while again, ...
The reason the transistor is dying is because you didn't put a flyback diode across the relay coil. Relay coils have significant inductance. This means the current can't change instantly without t...
My control system gets a signal representing the plant output, but that signal has a lot of noise on it. The control system goes nuts trying to react to the noise. I need to filter out the noise ...
I'm trying to understand a circuit for driving a LED found on a board I purchased. Below is the circuit driven by an I/O pin (HS2) of a small 3.3V processor. The HS2 pin is driven by the I/O wi...
Sounds like you have JavaScript disabled for this site. There is a live preview feature available, but it necessarily requires JavaScript to work; without JS enabled, it just... won't. As for your ...
Hi there! The on-topic page https://electrical.codidact.com/help/topics might need a bit of tweaking and discussion. I think it is important that such a page attempts to be as specific as possible ...
For any 2nd order low pass filter, the components (R, L and C for electrical and k, M and c for mechanical) can be reduced into two more meaningful quantities: - $\zeta$ (the damping ratio) $\omeg...
When should a transformer core be potted? Should it be potted at all? For this type of job, you would pot the transformer when you can't obtain the necessary creepage and clearance between the...
