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General Q&A about the design and function of electronic systems, electric power systems and infrastructure, their theory, and tools specific to those fields. Read these guidelines before posting.

229 posts · Subscribe
Activity Age Score Random
71%
+3 −0
Capacitor in 2nd stage of opamp

1 answer  ·  posted 12mo ago by MissMulan‭  ·  last activity 12mo ago by Olin Lathrop‭

capacitor op-amp voltage
71%
+3 −0
During a Li-ion cell charge or discharge at 1C rate, are the electrode interfaces at thermodynamic equilibrium?

1 answer  ·  posted 1y ago by leventov‭  ·  last activity 1y ago by coquelicot‭

electrochemistry li-ion-cell
60%
+1 −0
Unexpected phase shift in results

2 answers  ·  posted 1y ago by MissMulan‭  ·  last activity 1y ago by coquelicot‭

voltage current ac
71%
+3 −0
Meaning of some components around voltage reference in SMPS

2 answers  ·  posted 1y ago by Chupacabras‭  ·  last activity 1y ago by a concerned citizen‭

component smps
50%
+1 −1
Current and voltage in AC circuits without impedance

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

voltage current ac
60%
+1 −0
Contactor control - Higher voltage PWM

2 answers  ·  posted 1y ago by 2kind‭  ·  last activity 1y ago by coquelicot‭

buck PWM contactor
77%
+5 −0
Capacitor ESR vs. Impedance

3 answers  ·  posted 1y ago by 2kind‭  ·  last activity 1y ago by TonyStewart‭

capacitor esr esl
75%
+4 −0
Is there a way to reliably measure antenna return loss outside a lab?

2 answers  ·  posted 1y ago by Lundin‭  ·  last activity 1y ago by TonyStewart‭

Antenna RF return-loss spectrum-analyzer
66%
+2 −0
What is the purpose of paralleling capacitors on the input/output of a power converter?

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

capacitor power-converter
71%
+3 −0
Why are antenna PCB traces square instead of rounded?

2 answers  ·  posted 1y ago by Kranulis‭  ·  last activity 1y ago by TonyStewart‭

PCB Antenna RF
62%
+3 −1
Microwave oven interfering with WiFi on the 2.4GHz band

2 answers  ·  posted over 1 year ago by Lundin‭  ·  last activity 1y ago by TonyStewart‭

EMC RF wifi emi radio
60%
+1 −0
Estimating the input capacitance of an BLDC motor controller

2 answers  ·  posted 1y ago by 2kind‭  ·  last activity 1y ago by TonyStewart‭

capacitance bldc inverter
30%
+1 −5
Is this AD8307 fake?

1 answer  ·  posted 1y ago by coquelicot‭  ·  edited 1y ago by coquelicot‭

IC amplifier
71%
+3 −0
Design considerations for a synchronous DC/DC converter

2 answers  ·  posted 1y ago by Mu3‭  ·  last activity 1y ago by Olin Lathrop‭

power-supply dc-dc voltage-regulator
71%
+3 −0
How could you model a 10M/100M Ethernet PHY architecture?

1 answer  ·  posted 1y ago by DavidE‭  ·  last activity 1y ago by Olin Lathrop‭

transformer Ethernet spice
66%
+6 −2
Why is the resistance of water so high?

3 answers  ·  posted 1y ago by Kranulis‭  ·  last activity 1y ago by Olin Lathrop‭

power
75%
+4 −0
Can you call an IC pin 'N.C' if it has hidden functionality?

1 answer  ·  posted 1y ago by Kranulis‭  ·  last activity 1y ago by Olin Lathrop‭

IC
55%
+3 −2
Who is familiar with PocketLink semiconductor and or Tesla Model 3 electronics

0 answers  ·  posted 1y ago by Steven83‭  ·  edited 1y ago by Lundin‭

display arm reverse-engineering
60%
+1 −0
Max V/Hz value for motor

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

motor control pmsm bldc
83%
+8 −0
Why 3V3 instead of 3V?

2 answers  ·  posted over 1 year ago by 2kind‭  ·  last activity 1y ago by Mu3‭

power-supply voltage
66%
+2 −0
Is there a tool or trick for bending TO220 leads

1 answer  ·  posted 1y ago by Pete W‭  ·  edited 1y ago by Lundin‭

pcb-assembly through-hole
66%
+2 −0
Filter RF Harmonics With Additional PI Network

2 answers  ·  posted over 1 year ago by leroy105‭  ·  last activity 1y ago by leroy105‭

RF
81%
+7 −0
Why do DC/DC switching controllers seem to favour the buck-boost topology over similar ones like Cuk, SEPIC and Zeta?

2 answers  ·  posted over 1 year ago by Mu3‭  ·  last activity 1y ago by Nick Alexeev‭

power-converter dc-dc buck-boost component-selection
66%
+2 −0
Is there a particular type of lead-free solder that does not degrade soldering tips?

2 answers  ·  posted over 1 year ago by Kranulis‭  ·  last activity over 1 year ago by Pete W‭

soldering
60%
+1 −0
Why is it is always power consumption or power delivered more in usage?

3 answers  ·  posted over 1 year ago by aditya98‭  ·  last activity over 1 year ago by Andy aka‭

power energy
60%
+1 −0
555 timer, PAM with digital signal

1 answer  ·  posted over 1 year ago by mrwavelets‭  ·  last activity over 1 year ago by coquelicot‭

555 PAM
57%
+2 −1
How building a follower satisfying rather extreme requirements.

1 answer  ·  posted over 1 year ago by coquelicot‭  ·  edited over 1 year ago by coquelicot‭

Analog transistor oamp follower buffer
50%
+2 −2
Can there be a global EMP disaster, whether totally natural or partially natural and partly artificial?

1 answer  ·  posted over 1 year ago by deleted user  ·  edited over 1 year ago by Lundin‭

emi EMP transient electromagnetism
71%
+3 −0
Isolated Digital Input - Overvoltage protection

3 answers  ·  posted over 1 year ago by 2kind‭  ·  last activity over 1 year ago by Olin Lathrop‭

input protection overvoltage
71%
+3 −0
Measuring Input/Output Impedance with a VNA

1 answer  ·  posted over 1 year ago by jm567‭  ·  last activity over 1 year ago by coquelicot‭

VNA Impedance
60%
+1 −0
Is it possible to design an n-bit full adder using SystemVerilog?

1 answer  ·  posted over 1 year ago by System‭  ·  last activity over 1 year ago by System‭

digital-logic-circuit computer-arithmetic systemverilog
50%
+0 −0
My grid dip: how does this electron tube technology work?

1 answer  ·  posted over 1 year ago by coquelicot‭  ·  last activity over 1 year ago by coquelicot‭

electron-tube oscillator
57%
+2 −1
What is causing this massive discharge traveling down a power line?

1 answer  ·  posted over 1 year ago by Pete W‭  ·  last activity over 1 year ago by Olin Lathrop‭

power-grid winter-weather big-honking-spark
66%
+2 −0
Name of this current limiting device

2 answers  ·  posted over 1 year ago by Chupacabras‭  ·  edited over 1 year ago by Chupacabras‭

led-drive-circuit current identification
71%
+3 −0
Is it always necessary to use the ground terminal of the oscilloscope probe?

2 answers  ·  posted over 1 year ago by coquelicot‭  ·  last activity over 1 year ago by Andy aka‭

grounding probe oscilloscope ground
66%
+2 −0
BLDC motor - initial rotor position

2 answers  ·  posted over 1 year ago by 2kind‭  ·  last activity over 1 year ago by KalleMP‭

motor control pmsm
71%
+3 −0
Is a BJT 3-transistor Wilson mirror faster than a simple mirror?

1 answer  ·  posted over 1 year ago by Pete W‭  ·  last activity over 1 year ago by Olin Lathrop‭

Analog transistor current-mirror bjt
60%
+1 −0
Why are two identical filters required for each signal, if the signals can be multiplexed into a single filter?

1 answer  ·  posted over 1 year ago by Georgian‭  ·  edited over 1 year ago by Georgian‭

filter ppg multiplexer interference
50%
+2 −2
Why does AC frequency affect my microwave's RPM?

1 answer  ·  posted over 1 year ago by msh210‭  ·  last activity over 1 year ago by Olin Lathrop‭

alternating-current frequency
44%
+2 −3
Why isn't voltage of electric chair higher?

2 answers  ·  posted over 1 year ago by Kranulis‭  ·  last activity over 1 year ago by manassehkatz‭

high-voltage safety
75%
+4 −0
MOV vs TVS diode

2 answers  ·  posted over 1 year ago by Pete W‭  ·  last activity over 1 year ago by coquelicot‭

esd transient-protection
60%
+1 −0
Why is the Linear Time-Invariant System (LTI) dominant in Signal processing?

1 answer  ·  posted over 1 year ago by aditya98‭  ·  last activity over 1 year ago by Olin Lathrop‭

LTI signal-processing
66%
+2 −0
recommendation for chip programming connection (pogo?)

1 answer  ·  posted over 1 year ago by Pete W‭  ·  last activity over 1 year ago by Olin Lathrop‭

microcontroller pogo-connector chip-programming
66%
+2 −0
PCT2075 temperature sensor accuracy

1 answer  ·  posted over 1 year ago by Chupacabras‭  ·  last activity over 1 year ago by Olin Lathrop‭

sensor accuracy temperature
75%
+4 −0
What should be considered when picking a flyback diode?

2 answers  ·  posted over 1 year ago by Lundin‭  ·  last activity over 1 year ago by Olin Lathrop‭

diode
66%
+2 −0
Cable loops between utility poles?

0 answers  ·  posted over 1 year ago by Olin Lathrop‭  ·  edited over 1 year ago by Olin Lathrop‭

utility-cables
66%
+2 −0
Confused about the amplitude and shape of output voltage pulse

2 answers  ·  posted over 1 year ago by Georgian‭  ·  last activity over 1 year ago by coquelicot‭

led PWM
71%
+3 −0
Is ESD overhyped?

5 answers  ·  posted over 1 year ago by aditya98‭  ·  last activity over 1 year ago by mkeith‭

esd-protection
66%
+2 −0
CAN Bus - Internal Oscillator

3 answers  ·  posted over 1 year ago by 2kind‭  ·  edited over 1 year ago by Lundin‭

microcontroller can-bus clock
66%
+2 −0
Driving ADC with opamp with large rails

3 answers  ·  posted over 1 year ago by z3333‭  ·  last activity over 1 year ago by coquelicot‭

op-amp adc over-voltage
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