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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.

124 posts · Subscribe
Activity Age Score Random
66%
+2 −0
Capacitor ESR vs. Impedance

2 answers  ·  last activity 3 days ago by coquelicot‭

capacitor esr esl
66%
+2 −0
Why are antenna PCB traces square instead of rounded?

2 answers  ·  last activity 8 days ago by TonyStewart‭

PCB Antenna RF
50%
+1 −1
Microwave oven interfering with WiFi on the 2.4GHz band

2 answers  ·  last activity 8 days ago by TonyStewart‭

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

2 answers  ·  last activity 8 days ago by TonyStewart‭

capacitance bldc inverter
33%
+1 −4
Is this AD8307 fake?

1 answer  ·  last activity 14 days ago by coquelicot‭

IC amplifier
66%
+2 −0
Design considerations for a synchronous DC/DC converter

2 answers  ·  last activity 27 days ago by Olin Lathrop‭

power-supply dc-dc voltage-regulator
66%
+2 −0
How could you model a 10M/100M Ethernet PHY architecture?

1 answer  ·  last activity 27 days ago by Olin Lathrop‭

transformer Ethernet spice
60%
+4 −2
Why is the resistance of water so high?

3 answers  ·  last activity 29 days ago by Olin Lathrop‭

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

1 answer  ·  last activity about 1 month ago by Olin Lathrop‭

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

0 answers  ·  last activity about 1 month ago by Lundin‭

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

2 answers  ·  last activity about 1 month ago by Olin Lathrop‭

motor control pmsm bldc
77%
+5 −0
Why 3V3 instead of 3V?

2 answers  ·  last activity about 1 month ago by Mu3‭

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

1 answer  ·  last activity about 1 month ago by Lundin‭

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

2 answers  ·  last activity about 1 month ago by leroy105‭

RF
77%
+5 −0
Why do DC/DC switching controllers seem to favour the buck-boost topology over similar ones like Cuk, SEPIC and Zeta?

2 answers  ·  last activity about 1 month 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  ·  last activity about 2 months ago by Pete W‭

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

3 answers  ·  last activity about 2 months ago by Andy aka‭

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

1 answer  ·  last activity about 2 months ago by coquelicot‭

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

1 answer  ·  last activity about 2 months 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  ·  last activity 2 months ago by Lundin‭

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

3 answers  ·  last activity 2 months ago by Olin Lathrop‭

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

1 answer  ·  last activity 3 months ago by coquelicot‭

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

1 answer  ·  last activity 3 months ago by System‭

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

1 answer  ·  last activity 3 months ago by coquelicot‭

electron-tube oscillator
50%
+1 −1
What is causing this massive discharge traveling down a power line?

1 answer  ·  last activity 3 months ago by Olin Lathrop‭

power-grid winter-weather big-honking-spark
60%
+1 −0
Name of this current limiting device

2 answers  ·  last activity 3 months 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  ·  last activity 3 months ago by Andy aka‭

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

2 answers  ·  last activity 3 months ago by KalleMP‭

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

1 answer  ·  last activity 3 months 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  ·  last activity 3 months ago by Georgian‭

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

1 answer  ·  last activity 4 months ago by Olin Lathrop‭

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

2 answers  ·  last activity 4 months ago by manassehkatz‭

high-voltage safety
71%
+3 −0
MOV vs TVS diode

2 answers  ·  last activity 4 months ago by coquelicot‭

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

1 answer  ·  last activity 4 months ago by Olin Lathrop‭

LTI signal-processing
60%
+1 −0
recommendation for chip programming connection (pogo?)

1 answer  ·  last activity 4 months ago by Olin Lathrop‭

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

1 answer  ·  last activity 4 months ago by Olin Lathrop‭

sensor accuracy temperature
71%
+3 −0
What should be considered when picking a flyback diode?

2 answers  ·  last activity 4 months ago by Olin Lathrop‭

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

0 answers  ·  last activity 4 months ago by Olin Lathrop‭

utility-cables
71%
+3 −0
ESD USB Shield Connection & Filtering

4 answers  ·  last activity 5 months ago by coquelicot‭

esd-protection esd usb
66%
+2 −0
Confused about the amplitude and shape of output voltage pulse

2 answers  ·  last activity 5 months ago by coquelicot‭

led PWM
66%
+2 −0
Is ESD overhyped?

5 answers  ·  last activity 5 months ago by mkeith‭

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

3 answers  ·  last activity 5 months ago by Lundin‭

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

3 answers  ·  last activity 5 months ago by coquelicot‭

op-amp adc over-voltage
66%
+2 −0
Transformer - Vsec or Current rating parameter

2 answers  ·  last activity 5 months ago by Olin Lathrop‭

transformer
33%
+0 −2
Is it possible for one transistor to switch between two loads?

3 answers  ·  last activity 5 months ago by Circuit fantasist‭

transistor-switch switching
66%
+2 −0
Moving average that uses less memory?

4 answers  ·  last activity 5 months ago by Pete W‭

digital-filter
62%
+3 −1
How to plot the I-V curve of a tunnel diode?

4 answers  ·  last activity 5 months ago by Circuit fantasist‭

diode tunnel
60%
+1 −0
Flyback Converter - Output Ripple

1 answer  ·  last activity 5 months ago by Olin Lathrop‭

flyback-converter ripple
60%
+1 −0
digital multimeter display count range

1 answer  ·  last activity 5 months ago by Olin Lathrop‭

ddm adc display count
50%
+1 −1
How can I debug, (and eventually fix) this Roomba PCB? [closed]

1 answer  ·  last activity 5 months ago by dustytrash‭

errors battery
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