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1.2k posts
 
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+6 −1
Q&A How to protect RF switches from ESD?

Assume that I have some generic antenna connector, followed by a pi-filter/50ohm impedance matching components, then a DC blocking cap (as per the RF switch recommendations) and then a RF switch fo...

4 answers  ·  posted 2y ago by Lundin‭  ·  last activity 8mo ago by Nick Alexeev‭

Question RF
72%
+6 −1
Q&A Mysterious little cases hanging on street wirings in India

I have been observing these little cases hanging to the wires from a long time. They are almost everywhere here in India, but I was unable to find out what they are. I am not sure whether they are...

3 answers  ·  posted 2y ago by aditya98‭  ·  edited 9mo ago by Lorenzo Donati‭

Question identification
72%
+6 −1
Meta Professional vs Hobbyist advice and potentially dangerous projects

This discussion was prompted by answers to this question. While the answers are good (basically, when designing for the medical field, either be or hire someone knowledgeable about the specific re...

2 answers  ·  posted 9mo ago by Sclrx‭  ·  last activity 9mo ago by Lundin‭

Question discussion
71%
+3 −0
Q&A Two way circuit breaking capability for ideal diode controllers

I would like to save some costs with ideal diode controllers. Basic requirement is for the diode controller to block overcurrents (short circuits) in both directions. The MAX16141A IC can do it a...

1 answer  ·  posted 10mo ago by kellogs‭  ·  edited 10mo ago by kellogs‭

71%
+3 −0
Meta How to request a mass-change in capitalization for tags?

Following a lot of discussion in comments, we're going to split this request: Capitalization changes: these were previously discussed and we'll make these changes for you. We can do this at t...

posted 9mo ago by Monica Cellio‭  ·  edited 9mo ago by Monica Cellio‭

Answer
71%
+3 −0
Q&A What is Ground Electrode in EMG?

*Learning about EMG as a part of our research. My team has at least some experience with electronics that is worth mentioning, but don't have any experience with EMG/bio-potentials. Most EMG hardwa...

2 answers  ·  posted 9mo ago by tilly‭  ·  last activity 9mo ago by TonyStewart‭

Question opamp
71%
+3 −0
Q&A Cable loops between utility poles?

Those are fiber optic cables that are wound back and forth between those "snowshoe" devices, which are used to limit the bend radius of the fiber. Those are needed to avoid propagation losses due ...

posted 9mo ago by Lorenzo Donati‭  ·  edited 9mo ago by Lorenzo Donati‭

Answer
71%
+3 −0
Meta What residential wiring questions are on-topic here?

I'm not very familiar with this site but was pointed to it by a comment. That made me wonder, what exactly is the scope of this site when it comes to residential wiring? For example, Basic wiri...

2 answers  ·  posted 9mo ago by matthewsnyder‭  ·  last activity 9mo ago by Lundin‭

Question discussion scope
71%
+3 −0
Meta How to request a mass-change in capitalization for tags?

Feel free to provide a list here and someone will go through and update them. For instance, I've just renamed [led] to [LED]. Please include both the old tag name, the new name, and ideally an expl...

posted 9mo ago by Mithical‭

Answer
71%
+3 −0
Meta What residential wiring questions are on-topic here?

Thanks for asking. In my view, if it's something you'd first think of asking an electrician, it's probably off topic here. That includes what type of cable to use, whether it should be in a condu...

posted 9mo ago by Olin Lathrop‭

Answer
71%
+3 −0
Meta Big tags overhaul - 1st part - please delete those tags!

67 tags deleted, 10 with posts still attached left alive.

posted 9mo ago by ArtOfCode‭

Answer
71%
+3 −0
Meta Big tags overhaul - 1st part - please delete those tags!

I've just finished a first clean-up of the tags pages, where I consolidated tags, provided synonyms, wrote guidance text and defined some hierarchy. As a result there are quite a lot of "dead" tag...

1 answer  ·  posted 9mo ago by Lorenzo Donati‭  ·  edited 9mo ago by trichoplax‭

Question support tags
71%
+3 −0
Q&A Burned Source Driver - Noise Spikes from Relay Coil

I am trying to figure out what is causing an Allegro A2982 source driver to burn up. The source driver (A2982) is connected to the coil of a Panasonic TXS2-9V relay. The source driver and coil ar...

1 answer  ·  posted 8mo ago by mrbean‭  ·  last activity 8mo ago by Olin Lathrop‭

Question relay source-driver
71%
+3 −0
Q&A Choosing between common-drain JFET amplifier, and common-source

Do common-source JFET amplifiers have an advantage over common-drain? The JFET would be in a low noise photodiode amplifier. The signal is 100us pulses with 10us raise times. Here are the schema...

1 answer  ·  posted 11mo ago by misk94555‭  ·  last activity 11mo ago by Olin Lathrop‭

Question JFET photodiode
71%
+3 −0
Meta Should posting on Meta affect reputation?

Yes, votes on meta should not factor into rep. Meta downvotes indicate disagreement, not that you're a terrible person, have the IQ of a garden slug, and cast dispersions on your heritage like the...

posted 11mo ago by Olin Lathrop‭  ·  edited 11mo ago by Olin Lathrop‭

Answer
71%
+3 −0
Meta Tag naming guidelines.

I've done a lot of work on tags lately and I'd like to share with the community some thoughts about the way tags should be named so that maybe it could become part of the FAQ and so hopefully lead ...

3 answers  ·  posted 10mo ago by Lorenzo Donati‭  ·  last activity 9mo ago by Lundin‭

Question discussion tags
71%
+3 −0
Meta How can we grow this community?

I just submitted a proposal to DuckDuckGo here for a new "bang" for their search syntax. If approved: !coddee search_term will trigger the following URL: https://electrical.codidact.com/posts/se...

posted 10mo ago by Lorenzo Donati‭  ·  edited 10mo ago by Lorenzo Donati‭

Answer
71%
+3 −0
Q&A Is there an easy way to measure the characteristic impedance of a cable using basic lab instruments?

As the title says, I'm interested in a simple technique to measure the characteristic impedance of a cable using only the instruments available in a school lab or to a (somewhat advanced) hobbyist....

1 answer  ·  posted 10mo ago by Lorenzo Donati‭  ·  edited 10mo ago by Lorenzo Donati‭

71%
+3 −0
Q&A Is there an easy way to measure the characteristic impedance of a cable using basic lab instruments?

What you basically ask for can be done (I've done it), but not all your specific constraints can be reasonably met. The way to measure transmission line impedance is to drive a step onto the trans...

posted 10mo ago by Olin Lathrop‭  ·  edited 10mo ago by Olin Lathrop‭

Answer
71%
+3 −0
Meta Apparent loss of reputation in last 24 hours

Posts on Meta no longer affect reputation, per this discussion with a moderator on this question.

posted 10mo ago by Monica Cellio‭

Answer
71%
+3 −0
Q&A Cable voltage rating

I was looking for guidelines of how to select appropriate cables for applications (I am interested in DC), I found IEC 183 standard which talks about high voltage cable selection for AC. Also, the ...

1 answer  ·  posted 11mo ago by Elleanor Lopez‭  ·  last activity 10mo ago by Sclrx‭

Question voltage cable
71%
+3 −0
Q&A Sensing 3 states in a single mcu pin using firmware

Starting with your first circuit: It seems a little klunky, but should work. I don't like the D1 and D2 diodes. The reason I placed D1 is to avoid triggering the mosfet with very low voltage li...

posted 11mo ago by Olin Lathrop‭

Answer
71%
+3 −0
Papers How to introduce or port my microcontroller project to MISRA C?

posted 4mo ago by Lundin‭  ·  edited 4mo ago by Lundin‭

Article C firmware MISRA
71%
+3 −0
Q&A estimation of pogo pin resistance

Is there a scientific way to estimate the resistance of a pogo pin? Ultimately there must be, but it generally requires knowing things you don't know. Worrying about the resistance of the barrel ...

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

Answer
71%
+3 −0
Q&A High voltage transformer design

When should a transformer core be potted? Whenever you need some of Mechanical ruggedness. High dielectric strength. Minimize vibrations (and therefore audible whine) from capacitive, inductive...

posted 4mo ago by Olin Lathrop‭

Answer