User scld

25 votes

Accepted

"two bypass/decoupling capacitors" rule?

decoupling-capacitor

answered Jan 15, 2014 at 19:51

17 votes

Accepted

Fundamentally knowing when to use capacitors / inductors

answered Oct 9, 2013 at 15:08

12 votes

How can PCB trace have 50 ohm impedance regardless of length and signal frequency?

pcb impedance trace characteristic-impedance

answered Jul 9, 2013 at 12:20

10 votes

Accepted

What is this white stuff inside this circuit board?

power-supply batteries capacitor

answered Jul 10, 2013 at 16:29

7 votes

Why can't two series-connected diodes act as a BJT?

diodes bjt

answered Aug 8, 2013 at 12:00

7 votes

Resettable mechanical switch?

switches latch mechanical

answered Nov 25, 2013 at 20:19

6 votes

Accepted

A transmission line with continuously varying impedance, how would reflection occur in this case?

transmission-line characteristic-impedance

answered Oct 2, 2013 at 14:33

6 votes

Accepted

How to reliably and safely recreate a blue smoke monster for a workshop?

design breadboard

answered Dec 16, 2013 at 13:39

6 votes

I have a "typical" 5 ohm resistor. Is there any way I can know the max power it can handle without the smoke test?

resistors

answered Aug 8, 2013 at 11:57

6 votes

Accepted

Why does electricity have a phase?

ac dc

answered Mar 5, 2015 at 19:37

5 votes

PCB colors - what's available, and why?

pcb

answered Aug 30, 2017 at 12:17

5 votes

Accepted

Benefits of top and bottom ground pour in multilayer boards with proper ground plane layers and stackup

signal-integrity shielding pcb-layers ground-plane copper-pour

answered Sep 13, 2013 at 14:04

4 votes

Why is the output from this regulator not a constant DC?

switch-mode-power-supply power-electronics

answered Jul 26, 2019 at 12:27

4 votes

What does battery charger's current rating mean?

batteries current battery-charging charger

answered Jan 26, 2016 at 4:13

3 votes

Adding voids underneath analog signal for improved impedance matching

analog pcb-design impedance-matching

answered Jul 25, 2016 at 19:36

3 votes

Accepted

What's the benefit of not soldering NC pins compared to soldering them to a disconnected pad?

pins dip floating-pin

answered Aug 7, 2013 at 10:52

3 votes

Accepted

What is a switching node island?

switch-mode-power-supply layout dc-dc-converter

answered Jul 10, 2013 at 18:34

3 votes

Tapering of planar waveguides

pcb-design ac impedance-matching waveguide

answered Jul 8, 2013 at 14:05

3 votes

Accepted

How to clamp a signal?

pulse

answered Nov 27, 2013 at 14:46

3 votes

Is Ohm's Law violating itself?

voltage current resistance ohms-law

answered Feb 5, 2014 at 13:19

3 votes

Accepted

Closed circuit Wifi over coax?

wifi coax

answered Mar 19, 2014 at 12:27

2 votes

Accepted

2.4G signals over single antenna

wifi

answered Oct 10, 2014 at 15:22

2 votes

Where is the memory inside this RFID tag

rfid

answered Feb 23, 2015 at 14:10

2 votes

Accepted

Automatic impedance matching in microwave waveguides

impedance impedance-matching microwave waveguide controlled-impedance

answered Feb 21, 2014 at 18:20

2 votes

AVR32 Drive Strength

microcontroller atmel avr32 uc3 drive-strength

answered Dec 11, 2013 at 13:55

2 votes

Pseudorandom bit generator: analogue circuit for microcontroller digital input

noise random-number

answered Aug 2, 2013 at 14:16

2 votes

Are op-amp circuits more noisy than amplifiers built from discrete components and why?

operational-amplifier signal noise

answered Aug 2, 2013 at 17:39

2 votes

New to microcontrollers...options for getting up and going cheaply

microcontroller development development-tools signal-processing

answered Sep 26, 2013 at 21:44

2 votes

terminated cable capacitance

rf capacitance transmission-line impedance-matching characteristic-impedance

answered Aug 8, 2013 at 18:06

2 votes

Accepted

What is a rotating "button" called?

components

answered Jul 28, 2015 at 0:49

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51 Answers

"two bypass/decoupling capacitors" rule?

Fundamentally knowing when to use capacitors / inductors

How can PCB trace have 50 ohm impedance regardless of length and signal frequency?

What is this white stuff inside this circuit board?

Why can't two series-connected diodes act as a BJT?

Resettable mechanical switch?

A transmission line with continuously varying impedance, how would reflection occur in this case?

How to reliably and safely recreate a blue smoke monster for a workshop?

I have a "typical" 5 ohm resistor. Is there any way I can know the max power it can handle without the smoke test?

Why does electricity have a phase?

PCB colors - what's available, and why?

Benefits of top and bottom ground pour in multilayer boards with proper ground plane layers and stackup

Why is the output from this regulator not a constant DC?

What does battery charger's current rating mean?

Adding voids underneath analog signal for improved impedance matching

What's the benefit of not soldering NC pins compared to soldering them to a disconnected pad?

What is a switching node island?

Tapering of planar waveguides

How to clamp a signal?

Is Ohm's Law violating itself?

Closed circuit Wifi over coax?

2.4G signals over single antenna

Where is the memory inside this RFID tag

Automatic impedance matching in microwave waveguides

AVR32 Drive Strength

Pseudorandom bit generator: analogue circuit for microcontroller digital input

Are op-amp circuits more noisy than amplifiers built from discrete components and why?

New to microcontrollers...options for getting up and going cheaply

terminated cable capacitance

What is a rotating "button" called?