Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »

Search

Advanced Search Options

To further refine your search, you can use additional qualifiers such as score:>0.5. For example, the search score:>=0.5 created:<1y grammar would return only posts mentioning "grammar" that have a score >= 0.5 and were created less than a year ago.

Further help with searching is available in the help center.

Quick hints: tag:tagname, user:xxx, "exact phrase", post_type:xxx, created:<N{d,w,mo,y}, score:>=0.5

Filters
 
66%
+2 −0
Q&A What reactance actually is?

"React" implies a response to an "event". For an inductor, the "event" is a change in current, $\frac{di}{dt}$ For a capacitor, the "event" is a change in voltage, $\frac{dv}{dt}$ $$$$ So, ...

posted 3y ago by Andy aka‭  ·  edited 3y ago by Andy aka‭

Answer
66%
+2 −0
Q&A Thévenins Theorem for Transistor Circuit

It seems like you did the reduction to a Thevenin source mostly right, although the final value is a bit off. The original circuit we want to reduce to a Thevenin source is: First we reduce V1,...

posted 3y ago by Olin Lathrop‭  ·  edited 3y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A How can I fix this 4-20 mA current loop to source current that matches current sink on its input?

I'd rather use the AD4111 as a high-side current sensor, instead of creating an "inverter" which would generate an equal and opposite current. Each current input of the AD4111 (IINx+ and IINx-) is...

posted 2y ago by Nick Alexeev‭

Answer
66%
+2 −0
Q&A Using arc trace routing instead of 45 degree trace routing

The 45° routing makes it easier to route multiple parallel traces across the PCB - I would say that's the main reason why they are so popular. Whereas 90° turns of multiple parallel traces next to ...

posted 2y ago by Lundin‭

Answer
66%
+2 −0
Q&A MOSFET protection with TVS: at the source pin or at the drain pin

If you put the Fat load-dump TVS downstream of the reverse-polarity protection MOSFET [1], then the load dump current would have to flow through the MOSFET. The MOSFET would have to be rated for t...

posted 2y ago by Nick Alexeev‭

Answer
66%
+2 −0
Q&A MOSFET protection with TVS: at the source pin or at the drain pin

Using a P FET for polarity protection like this means that in case you flip + and -, the gate will be inactive, meaning that GND which is now connected to drain will get disconnected - no current w...

posted 2y ago by Lundin‭  ·  edited 2y ago by Lundin‭

Answer
66%
+2 −0
Q&A Over-voltage protection for device with photovoltaic cell source

I have a solar panel rated for 6V open-circuit and up to 150mA. I would like to connect this to an SPV1040 or similar buck-boost converter with MPPT functionality to be able to charge a 3.6V batter...

2 answers  ·  posted 2y ago by Keelan‭  ·  last activity 2y ago by TonyStewart‭

Question over-voltage protection overvoltage Zener-diode solar-panel
66%
+2 −0
Q&A what should the output be for this use case of the CD4047 chip?

Hello, I am trying to use a CD4047 in monostable, positive-edge trigger mode: I am not skilled enough to make out what the output, i.e. pin 10, should be when pin 8, the input, is held at 0V (...

1 answer  ·  posted 2y ago by kellogs‭  ·  edited 2y ago by kellogs‭

Question multivibrator cd4047 monostable
66%
+2 −0
Q&A Oscillator with non-rechargable battery

Lets say I power an oscillator by a non-rechargable battery. Lets imagine a generic design with LC-circuit and negative resistance created by some transistor circuit. To me it seems that at certai...

1 answer  ·  posted 2y ago by kek‭  ·  last activity 2y ago by Olin Lathrop‭

Question LC-network battery oscillator reactive-power
66%
+2 −0
Q&A What does it mean for a signal to have impedance?

What does it mean for signals to have impedance? I expect that what it means is that a particular signal source has an effective series resistance (for a voltage source) or, an effective paral...

posted 2y ago by Andy aka‭  ·  edited 2y ago by Andy aka‭

Answer
66%
+2 −0
Q&A What does it mean for a signal to have impedance?

What does it mean for signals to have impedance? To me, impedance is kinda like an "extended resistance" that also includes phase shift $$Z = R + jX $$It makes sense to me that components like cap...

3 answers  ·  posted 2y ago by Carl‭  ·  last activity 2y ago by TonyStewart‭

Question signal-processing Impedance signal-and-systems
66%
+2 −0
Q&A Testing instrumentation amplifier with differential signal

It is important to realize that an ECG signal is high impedance and this easily picks up line voltage E-fields. Using a 50 Ohm sig.gen. is a poor simulation of the use of this circuit and also neg...

posted 2y ago by TonyStewart‭

Answer
66%
+2 −0
Q&A Using arc trace routing instead of 45 degree trace routing

Olin has a great answer, I just wanted to add some of my personal experience. I only started laying out PCBs three years ago, and I use KiCad. KiCad got curved traces support in test version 5.99 o...

posted 2y ago by DSI‭

Answer
66%
+2 −0
Q&A Using arc trace routing instead of 45 degree trace routing

The best route is a straight connection between the two points being connected. Of course that's not always possible due to other objects being in the way, or to be able to route other connections...

posted 2y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A Using arc trace routing instead of 45 degree trace routing

Most modern CAD software for PCB design offers arc trace routing or a form of conversion between 45/90 degree angel trace routing and arc trace routing. Despite this, the overwhelming majority of c...

3 answers  ·  posted 2y ago by Mu3‭  ·  last activity 2y ago by Lundin‭

Question PCB pcb-layout
66%
+2 −0
Q&A What is the difference between rise/fall time and Turn-On/off Delay Time?

To understand the timing, you must understand the cause. Delay is the time from input to output It is measured from +10% of input to 90% of output ( or a 10% change in output), unlike logic chips ...

posted 2y ago by TonyStewart‭  ·  edited 2y ago by TonyStewart‭

Answer
66%
+2 −0
Q&A Audio OpAmp requirements

As we know audio has high dynamic range. It means 120dB dynamic range of human ear causes to hear 1 million time samaller that highest undistorted accoustic wave. Then I think for high end audio we...

1 answer  ·  posted 2y ago by mohammadsdtmnd‭  ·  last activity 2y ago by Olin Lathrop‭

Question audio
66%
+2 −0
Q&A Audio OpAmp requirements

The specs you need from an opamp in an audio circuit are somewhat dependent on the particular circuit. As you state, requirements of good audio circuits are high signal to noise ratio and low dist...

posted 2y ago by Olin Lathrop‭  ·  edited 2y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A how to figure out the max power of a transformer?

You best source of information is boilerplate on the part itself. you have that but all there is is a part number and the design voltage. Your next best information is the boilerplate on the appl...

posted 2y ago by Jasen‭

Answer
66%
+2 −0
Q&A How Relay inrush current limiter works?

It's a current limiter, not eliminator. The current is always supposed to flow, but be limited at startup to avoid high inrush current. All the relay does is short out R103 when activated. The r...

posted 2y ago by Olin Lathrop‭

Answer
66%
+2 −0
66%
+4 −1
Meta Name of the OP in the list of questions

What you ask is not specific to the Electrical Engineering site. There is nothing we can do about it here. If you really think this is a good idea, then you should propose it on the main Codidact...

posted 4y ago by Olin Lathrop‭  ·  edited 4y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A High pass filter design

I saw this link by accident and, while Andy's and Olin's answers are spot on, I thought I'd expand a bit on the complications they describe, just so you know what you're missing (or meeting, should...

posted 4y ago by a concerned citizen‭  ·  edited 4y ago by a concerned citizen‭

Answer
66%
+2 −0
Meta Why are posts that users clearly approve of being closed?

The current applicable rule from https://electrical.codidact.com/help/topics would be: Off-topic ... High-level use of electrical devices. If your question treats a device like a black box and isn...

posted 4y ago by Lundin‭  ·  edited 4y ago by Lundin‭

Answer
66%
+2 −0
Q&A How to estimate time of completion while developing an electronic product?

First of all, it depends on how much work the customer has done in advance. Do they have a proper spec? Do they at least have a bunch of key requirements? Or is it just "out there" and you must dra...

posted 4y ago by Lundin‭

Answer