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Q&A

Posts tagged PCB

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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 10mo ago by Alinik‭  ·  last activity 6mo ago by KalleMP‭

77%
+5 −0
Q&A Press fit PCB receptacle for plated holes (Marked for non-plated holes)

I saw that this PCB socket: Is marked as pressfit for non-plated holes. However, can it be used with plated holes as well, or will it damage the plating inside?

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

Question PCB
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+4 −0
Q&A PCB Copper Layer Spacing & Voltage Rating

One standard used for spacing conductors based on voltage is the IPC-2221. This standard differentiates spacing requirements for inner and outer conductors. Does the IPC minimum separation betwee...

1 answer  ·  posted 12mo ago by DavidE‭  ·  edited 11mo ago by Lundin‭

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Q&A Why are antenna PCB traces square instead of rounded?

While doing some reading on RF designs I ran across this paragraph: I have never designed an RF circuit, but all the PCB trace antennas I have seen on development boards are square. For example,...

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

Question PCB Antenna RF
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Q&A Cleaning flux out of USB connectors after soldering

When soldering Micro-USB or USB-C connectors by hand, flux is applied generously. This sometimes results in flux getting inside the connector housing, making it sticky and creating high physical re...

1 answer  ·  posted 2y ago by Kranulis‭  ·  edited 2y ago by Lundin‭

Question PCB smd soldering flux
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Q&A 4-Layer PCB Routing Question

I am designing a 4-layer PCB that has both analog and digital circuitry throughout it. The analog section involves high return currents as well as ADCs sampling the voltage across sense resistors a...

1 answer  ·  posted 2y ago by jm567‭  ·  edited 2y ago by Olin Lathrop‭