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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 over 1 year ago by Circuit fantasist‭

83%
+8 −0
208VAC triple-phase to single-phase conversion

2 answers  ·  posted 2mo ago by cosined‭  ·  last activity 2mo ago by Andy aka‭

83%
+8 −0
Why 3V3 instead of 3V?

2 answers  ·  posted 11mo ago by 2kind‭  ·  last activity 10mo ago by Mu3‭

81%
+7 −0
How long does it take for energy to propagate in a circuit?

4 answers  ·  posted 2mo ago by Mu3‭  ·  last activity 1mo ago by Andy aka‭

81%
+7 −0
Low-frequency PWM-controlled Mosfet heater circuit

2 answers  ·  posted 3mo ago by francesco‭  ·  last activity 3mo ago by Pete W‭

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

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

80%
+6 −0
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 over 1 year ago by Olin Lathrop‭  ·  edited over 1 year ago by Olin Lathrop‭

77%
+5 −0
Design considerations for a differential pair

1 answer  ·  posted 1mo ago by DavidE‭  ·  last activity 28d ago by Olin Lathrop‭

77%
+5 −0
Capacitor ESR vs. Impedance

3 answers  ·  posted 9mo ago by 2kind‭  ·  last activity 8mo ago by TonyStewart‭

77%
+5 −0
How do I design a flyback converter? What are the basics I should know?

2 answers  ·  posted over 1 year ago by Andy aka‭  ·  last activity 12d ago by Andy aka‭

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

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

75%
+4 −0
MOV vs TVS diode

2 answers  ·  posted 1y ago by Pete W‭  ·  last activity 12mo ago by coquelicot‭

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

1 answer  ·  posted 10mo ago by Kranulis‭  ·  last activity 10mo ago by Olin Lathrop‭

IC
75%
+4 −0
What is this metal panel under power lines?

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

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
75%
+4 −0
PCB Copper Layer Spacing & Voltage Rating

1 answer  ·  posted 29d ago by DavidE‭  ·  edited 27d ago by Lundin‭

75%
+4 −0
Via on pad: acceptable or not?

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

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

71%
+3 −0
Flyback converter design

2 answers  ·  posted 2mo ago by Sriram14‭  ·  last activity 2mo ago by Olin Lathrop‭

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
Why there is a body diode in mosfets?

3 answers  ·  posted over 1 year ago by aditya98‭  ·  last activity 1y ago by Nick Alexeev‭

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

4 answers  ·  posted over 1 year ago by LvW‭  ·  edited over 1 year ago by LvW‭

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

4 answers  ·  posted 1y ago by leroy105‭  ·  last activity 2mo ago by Pete W‭

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

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

71%
+3 −0
3+3 doesn’t show 6

2 answers  ·  posted 6mo ago by MissMulan‭  ·  edited 3mo ago by Peter Mortensen‭

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

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

71%
+3 −0
Battery voltage: to boost or to connect in series.

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

71%
+3 −0
71%
+3 −0
PTC resettable fuse leakage current

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

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

1 answer  ·  posted 11mo ago by jm567‭  ·  last activity 11mo ago by coquelicot‭

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

3 answers  ·  posted 11mo ago by 2kind‭  ·  last activity 11mo ago by Olin Lathrop‭

71%
+3 −0

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