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 Battery voltage: to boost or to connect in series.

To summarize the problem, you have 12 V battery packs that you don't want to change due to certifications, but you need to power a 48 V 4 A load. The battery system also needs to be compatible wit...

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

Answer
66%
+2 −0
Q&A Meaning of some components around voltage reference in SMPS

R22, C22, C23, together with Rfbt (feedback top) and Rfbb (feedback bottom) form what is called a type II compensator, using TL431 as an opamp with built-in reference. The feedback network is a bit...

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

Answer
66%
+2 −0
Q&A Current and voltage in AC circuits without impedance

Since this is homework, I'm not just going to give you the answer. When all else fails, go back to first principles. That's what handy shortcuts, like using impedance, were derived from. In this...

posted 4y ago by Olin Lathrop‭

Answer
66%
+2 −0
Q&A Trouble understanding how to use adjustable LDO regulator

Your question is quite long, so it's not clear what exactly you are asking. It seems the main point is what Microchip means by Note 5 on page 7 of the datasheet: You are right, that makes no se...

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

Answer
66%
+4 −1
Q&A Help with differential to single ended voltage converter

Question: What is the purpose of the current mirror? Answer: It allows to combine the current changes in BOTH transistors (T1, T2). Explanation In a classical differential amplifier (with separat...

posted 4y ago by LvW‭  ·  edited 4y ago by LvW‭

Answer
66%
+2 −0
Q&A How could you model a 10M/100M Ethernet PHY architecture?

I'm not going to get into how to model the PHY interface, but will try to explain why there are differences. The type of Ethernet you are talking about is transformer-coupled. The line itself is ...

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

Answer
66%
+2 −0
Q&A Contactor control - Higher voltage PWM

Your basic idea is fine, but your implementation is not. C1 makes the whole thing not work, as it will block DC. C2 puts a burden on the switch. D1 would preferably be Schottky. I'll write a mo...

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

Answer
66%
+2 −0
Q&A Estimating the input capacitance of an BLDC motor controller

What is seems you really want to know is how to size a power supply filter capacitor, not what the input capacitance of something is. The objective is to keep the ripple voltage below some value. ...

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

Answer
66%
+2 −0
Q&A Critically damped oscillation issue

Your derivation is correct, you just missed the sign: $V_L=-V_C=2;\mathrm{V}$, because the capacitor charges with +2 V, and the discharge accounts for the negative sign on the inductor. The notatio...

posted 3y ago by a concerned citizen‭

Answer
66%
+2 −0
Q&A MOSFET differential to single ended converter intuition

How does the differential to single ended converter work? In order for the circuit to work, Q1 and Q3 must be in the saturation region and depending on the voltage inputs, one of Q2 and Q4 will be...

1 answer  ·  posted 3y ago by MissMulan‭  ·  edited 3y ago by Peter Mortensen‭

Question MOSFET differential-amplifier voltage
66%
+2 −0
Q&A What is the purpose of paralleling capacitors on the input/output of a power converter?

In the design of a power converter, picking the appropriate capacitors for the input and output of the converter is quite important. It is relatively easy to calculate the necessary values for a gi...

1 answer  ·  posted 4y ago by Mu3‭  ·  last activity 4y ago by Olin Lathrop‭

Question capacitor power-converter
66%
+2 −0
Q&A MOSFET differential to single ended converter intuition

To be clear and protect against possible future edits, here is the circuit being discussed: As you say, this is a differential to single ended converter. In this case, the MOSFETs have likely b...

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

Answer
66%
+2 −0
Q&A Diodes used in mixers

Suppose we have this circuit which is supposed to be an unbalanced frequency mixer. But how does the diode generate a signal with new frequencies at the output?

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

Question mixer semiconductor-diode
66%
+2 −0
Q&A Design high -pass filter with 2 points of the bode plot

Miss Mulan - I am a bit late with my answer. Nevertheless - there is formula which gives you the necessary filter order "n" - as a function of two frequencies and both associated damping figures. ...

posted 2y ago by LvW‭  ·  edited 2y ago by LvW‭

Answer
66%
+2 −0
Q&A Modelling tunnel diode relaxation oscillator

Unless you know the exact formula for the I-V curve, you will never find out anything analytically. Fair warning: very unlikely you will get such formula, since they are strongly non-linear in natu...

posted 2y ago by a concerned citizen‭

Answer
66%
+2 −0
Q&A Low-pass filter after the output DAC in CD players

[In addition to what Olin wrote earlier.] I looked-up one of the references from the textbook, and I may have found the answer which the author had in mind. This entire spectrum must not be pas...

posted 2y ago by Nick Alexeev‭  ·  edited 2y ago by Nick Alexeev‭

Answer
66%
+2 −0
Q&A Results of analysis of Hartley oscillator dont make sense

If you are pursuing engineering then you can't use doodles instead of schematics generated by dedicated (or not) programs. It will take you just the same amount of time, if not less, and the result...

posted 2y ago by a concerned citizen‭  ·  edited 2y ago by a concerned citizen‭

Answer
66%
+2 −0
Q&A Ceramic filter vs ceramic resonator

A resonator cannot replace a filter because the filter has multiple resonances to extend the bandwidth. For AM carrier modulation using a narrow band resonator with 0.5% tolerance of 6MHz or +/-30...

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

Answer
66%
+2 −0
Q&A Ceramic filter vs ceramic resonator

I have a design of a power line communication using the following IC. https://www.yamar.com/datasheet/DS-SIG60.pdf My design is the same as the example circuit in the datasheet of the chip. Th...

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

Question communication resonator ceramic-filter band-pass-filter
66%
+2 −0
Q&A Circuit which create ac sine wave from dc pulsed signal

A full wave rectifier converts a sine wave to DC pulsed signal of double frequency. Is there a circuit which does the reverse process?

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

Question AC DC
66%
+2 −0
Q&A pH Electrode Buffer - Offset when solution grounded

DC offsets in hundreds of mV from different grounds may be coming from either the floating ground or the PE earth. The latter may be from rectified AC line filter noise shunted to PE. The former m...

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

Answer
66%
+4 −1
Q&A How to choose the right value for input voltage ripple of an SMPS?

Which important system design parameters need to be locked in order to estimate the maximum allowable level of the input voltage ripple of an SMPS? I have encountered ballpark figures of <1%, &...

1 answer  ·  posted 3y ago by 2kind‭  ·  last activity 3y ago by Olin Lathrop‭

Question SMPS ripple
66%
+4 −1
Q&A PCB ground planes with isolated voltage

I have designed a PCB that I need to work in which a microcontroller drives a 24 V brushed motor. The input power to the board is 24 V, this is then lowered to 5 V by a step down converter, and thi...

3 answers  ·  posted 3y ago by Alinik‭  ·  last activity 3y ago by KalleMP‭

Question PCB grounding pcb-layout ground-plane
66%
+2 −0
Q&A Inductance vs frequency

If your question is theoretical (you are dealing with ideal components), then the answer of Olin is just fine. If it is concrete, that's the answer of Andy. In the concrete case furthermore, I wou...

posted 3y ago by coquelicot‭  ·  edited 3y ago by coquelicot‭

Answer
66%
+2 −0
Q&A H(jω) does not exist for unstable systems, but we still use it when designing controllers - contradiction?

I think this is partly semantics. For example, consider designing a compensator for a power supply. The transfer function under consideration is essentially the open loop impulse response of the ...

posted 3y ago by Olin Lathrop‭

Answer