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user42875
  • Member for 8 years, 4 months
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33 votes
4 answers
6k views

Why do characteristic impedances matter only when traces are longer than half a wavelength?

23 votes
3 answers
2k views

Is twisting a single ended signal with its own GND really useful?

12 votes
2 answers
2k views

Should each trace carrying RF be 50Ohm in characteristic impedance? How?

10 votes
3 answers
2k views

How to tune a PID controller to a nonlinear process

8 votes
9 answers
6k views

Why are we not always isolating the mains supply?

6 votes
4 answers
10k views

Why are induction motors controlled with a constant V/f?

6 votes
3 answers
869 views

Does the 1x oscilloscope probe setting slow down MHz digital signals?

5 votes
2 answers
6k views

Most efficient and rigorous way to calculate input/output impedances (transistor circuits)

5 votes
3 answers
2k views

Transfer functions with constant voltage sources in them?

4 votes
2 answers
1k views

Multimeter circuit review

4 votes
2 answers
423 views

Design a high accuracy ADC circuit (example of differential ADC LTC2348 for PSD signals)

4 votes
3 answers
881 views

Can EEPROMs have feedback networks to make state machines?

3 votes
3 answers
3k views

How do signal reflections work?

3 votes
1 answer
2k views

Why use a N channel MOSFET as high side H bridge switches?

3 votes
2 answers
301 views

What is the simplest 100km RF communication link there is?

2 votes
0 answers
60 views

What are the connectors for GND and power supply on these RF LNAs?

2 votes
2 answers
46 views

Can regular ON/OFF solenoid valves be turned into a proportional valve just by changing the control electronics?

2 votes
1 answer
344 views

Input impedance of a transistor amplifier from an example

2 votes
2 answers
1k views

How to protect a MAX232 from PIC programming high voltages?

2 votes
3 answers
13k views

Can a faulty USB device fry other devices on the same hub?

2 votes
2 answers
165 views

How to be sure a SSR has not been damaged when its circuit breaker has tripped?

2 votes
2 answers
3k views

Why can a 74HC595 drive 8 LEDs?

2 votes
2 answers
611 views

How to estimate the settling time of the rotor of a stepper motor?

1 vote
3 answers
2k views

Limit current of ESC by software

1 vote
1 answer
670 views

What is the type of this legacy motor and how is it supposed to be controlled?

1 vote
2 answers
187 views

In a H-bridge, when the motor is actively braked, why is the supply providing power when kinetic energy decreases?

1 vote
3 answers
620 views

Are benchtop lab power supplies usually isolated?

1 vote
1 answer
2k views

Review of: voltmeter, ampmeter, ohmmeter circuits for Arduino [closed]

1 vote
1 answer
251 views

Bidirectional control of two different actuators

1 vote
1 answer
35 views

Is there a way to predict the VDC rating of a relay in function of its VAC rating?