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Q&A

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.

86%
+11 −0
What is a bootloader, and how would I develop one?

1 answer  ·  posted over 1 year ago by Olin Lathrop‭  ·  edited over 1 year ago by Olin Lathrop‭

84%
+9 −0
How to calculate pullup resistor value for pushbutton?

2 answers  ·  posted over 1 year ago by Olin Lathrop‭  ·  last activity 1y ago by Circuit fantasist‭

83%
+8 −0
Why 3V3 instead of 3V?

2 answers  ·  posted 8mo ago by 2kind‭  ·  last activity 7mo ago by Mu3‭

80%
+6 −0
High Speed Design - Which grounding strategy to choose?

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

80%
+6 −0
How to access a hardware register from firmware?

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

77%
+5 −0
Rules and guidelines for drawing schematics?

1 answer  ·  posted 1y ago by Olin Lathrop‭  ·  edited 12mo ago by Olin Lathrop‭

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

1 answer  ·  posted 7mo ago by Kranulis‭  ·  last activity 6mo ago by Olin Lathrop‭

IC
75%
+4 −0
Chokes, Beads and Inductors in Pi-filters

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

75%
+4 −0
What benefit has a differential amplifier when measuring a sensor signal?

1 answer  ·  posted over 1 year ago by Andy aka‭  ·  last activity over 1 year ago by Andy aka‭

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

2 answers  ·  posted 9mo ago by Lundin‭  ·  last activity 9mo ago by Olin Lathrop‭

75%
+4 −0
Capacitor ESR vs. Impedance

3 answers  ·  posted 5mo ago by 2kind‭  ·  last activity 5mo ago by TonyStewart‭

75%
+4 −0
MOV vs TVS diode

2 answers  ·  posted 9mo ago by Pete W‭  ·  last activity 9mo ago by coquelicot‭

75%
+4 −0
71%
+3 −0
Why are antenna PCB traces square instead of rounded?

2 answers  ·  posted 6mo ago by Kranulis‭  ·  last activity 6mo ago by TonyStewart‭

71%
+3 −0
Capacitor in 2nd stage of opamp

1 answer  ·  posted 3mo ago by MissMulan‭  ·  last activity 3mo ago by Olin Lathrop‭

71%
+3 −0
Why Ib=const. for BJT output characteristics Ic=f(Vce)

4 answers  ·  posted 1y ago by LvW‭  ·  edited 12mo ago by LvW‭

71%
+3 −0
71%
+3 −0
Why there is a body diode in mosfets?

3 answers  ·  posted 1y ago by aditya98‭  ·  last activity 12mo ago by Nick Alexeev‭

71%
+3 −0
What is this metal panel under power lines?

1 answer  ·  posted 3mo ago by Olin Lathrop‭  ·  last activity 3mo ago by DSI‭

71%
+3 −0
Is ESD overhyped?

5 answers  ·  posted 1y ago by aditya98‭  ·  last activity 10mo ago by mkeith‭

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

4 answers  ·  posted 10mo ago by leroy105‭  ·  last activity 10mo ago by coquelicot‭

71%
+3 −0
71%
+3 −0
4-Layer PCB Routing Question

1 answer  ·  posted 1y ago by jm567‭  ·  edited 1y ago by Olin Lathrop‭

71%
+3 −0
Digital circuit that squares a 4-bit input

1 answer  ·  posted over 1 year ago by Joel Reyes Noche‭  ·  last activity over 1 year ago by Olin Lathrop‭

71%
+3 −0
When to use RTOS?

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

71%
+3 −0
Electrolytic capacitor lifetime rating

1 answer  ·  posted over 1 year ago by Andy aka‭  ·  edited over 1 year ago by Andy aka‭

71%
+3 −0
PTC resettable fuse leakage current

1 answer  ·  posted 21d ago by cosined‭  ·  last activity 20d ago by Olin Lathrop‭

71%
+3 −0
Isolated Digital Input - Overvoltage protection

3 answers  ·  posted 8mo ago by 2kind‭  ·  last activity 8mo ago by Olin Lathrop‭

71%
+3 −0
What are the most common causes of CAN bus communication errors?

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

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

1 answer  ·  posted 8mo ago by jm567‭  ·  last activity 8mo ago by coquelicot‭

71%
+3 −0
Driving relay, transistor keeps failing

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

71%
+3 −0
71%
+3 −0
Replacement power supply voltage and current ratings?

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

71%
+3 −0
Moving average that uses less memory?

4 answers  ·  posted over 1 year ago by Olin Lathrop‭  ·  last activity 10mo ago by Pete W‭

66%
+2 −0
66%
+2 −0
Cleaning flux out of USB connectors after soldering

1 answer  ·  posted 11mo ago by Kranulis‭  ·  edited 11mo ago by Lundin‭

66%
+2 −0
66%
+2 −0
Battery voltage: to boost or to connect in series.

1 answer  ·  posted 4mo ago by DSI‭  ·  last activity 3mo ago by Olin Lathrop‭

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

1 answer  ·  posted 7mo ago by Pete W‭  ·  edited 7mo ago by Lundin‭

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