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90 votes

8 answers

87k views

When is a MOSFET more appropriate as a switch than a BJT?

asked Apr 14, 2011 at 21:45

64 votes

9 answers

125k views

How do I saturate an NPN transistor?

asked Apr 14, 2011 at 17:54

29 votes

5 answers

46k views

Is it safe to drive a MOSFET from an output pin of a microcontroller?

asked Apr 14, 2011 at 20:32

25 votes

1 answer

4k views

PCB layout questions for MCU breakout board

asked Sep 28, 2011 at 15:06

25 votes

8 answers

13k views

Is there such a thing as a switch that can be actuated automatically?

asked Mar 13, 2014 at 17:22

18 votes

5 answers

3k views

Can a switching power supply be built on a breadboard?

asked Jul 18, 2011 at 22:49

17 votes

4 answers

16k views

What is a one-bit ADC good for?

asked Feb 27, 2013 at 20:00

14 votes

5 answers

8k views

24VAC/5VDC power supply design

asked Jul 11, 2011 at 19:48

12 votes

2 answers

5k views

How do I read a datasheet for a solid state relay?

asked Jun 30, 2011 at 16:52

10 votes

2 answers

3k views

Is it normal to have a rats-nest of VCC/GND traces under an IC?

asked Sep 19, 2011 at 19:09

9 votes

3 answers

817 views

Is it safe to run long I/O wires to a microcontroller?

asked Sep 2, 2011 at 16:30

8 votes

3 answers

11k views

SSR vs optocoupler with TRIAC output

asked Sep 9, 2011 at 16:02

8 votes

2 answers

3k views

How far is "too far" when routing traces for crystals, and how asymmetrical is "too much"?

asked Sep 29, 2011 at 14:37

8 votes

4 answers

8k views

Why does a speed-controlled computer fan require 4 pins?

asked Dec 1, 2011 at 17:13

8 votes

2 answers

40k views

How do I drive a TRIAC from a microcontroller (for low voltages)?

asked Apr 17, 2012 at 21:59

8 votes

2 answers

17k views

What is a phase difference between voltage and current?

asked Aug 5, 2011 at 17:30

7 votes

3 answers

659 views

Can I use an inductive load in an ATX-to-bench supply project?

asked Apr 1, 2011 at 14:40

7 votes

6 answers

8k views

What would a professional use to switch sprinkler solenoids?

asked Apr 17, 2012 at 14:20

7 votes

2 answers

9k views

Is it possible to have 16 simultaneous PWM outputs on a 64-pin STM32F4 device?

asked Mar 8, 2012 at 19:36

6 votes

1 answer

958 views

Playing with a shift register and some LEDs

asked Mar 15, 2011 at 17:06

6 votes

2 answers

5k views

What is a flyback regulator?

asked Jul 12, 2011 at 1:47

5 votes

4 answers

10k views

What is the common pin configuration upon microcontroller reset?

asked Mar 22, 2012 at 13:00

5 votes

4 answers

5k views

Is this a proper use of a PNP transistor?

asked Jul 26, 2011 at 21:52

4 votes

3 answers

3k views

Load capacitance for RTC Crystal

asked Sep 30, 2011 at 15:59

4 votes

3 answers

13k views

How should I set up my text in Eagle for the maximum chance of success?

asked Oct 7, 2011 at 21:10

4 votes

2 answers

3k views

Building a simple mcu-driven array of LEDs

asked Mar 11, 2011 at 21:56

4 votes

2 answers

3k views

How do I determine the power rating of a stepper motor?

asked Mar 24, 2011 at 15:02

4 votes

6 answers

4k views

Graphical equivalent to HD44780 LCD controller

asked Apr 8, 2011 at 16:17

4 votes

3 answers

8k views

How to determine proper stepper polarity?

asked May 10, 2011 at 18:53

3 votes

3 answers

23k views

Is silver-bearing solder appropriate for general hobbyist use?

asked Oct 5, 2011 at 17:42

Stack Exchange Network

39 Questions

When is a MOSFET more appropriate as a switch than a BJT?

How do I saturate an NPN transistor?

Is it safe to drive a MOSFET from an output pin of a microcontroller?

PCB layout questions for MCU breakout board

Is there such a thing as a switch that can be actuated automatically?

Can a switching power supply be built on a breadboard?

What is a one-bit ADC good for?

24VAC/5VDC power supply design

How do I read a datasheet for a solid state relay?

Is it normal to have a rats-nest of VCC/GND traces under an IC?

Is it safe to run long I/O wires to a microcontroller?

SSR vs optocoupler with TRIAC output

How far is "too far" when routing traces for crystals, and how asymmetrical is "too much"?

Why does a speed-controlled computer fan require 4 pins?

How do I drive a TRIAC from a microcontroller (for low voltages)?

What is a phase difference between voltage and current?

Can I use an inductive load in an ATX-to-bench supply project?

What would a professional use to switch sprinkler solenoids?

Is it possible to have 16 simultaneous PWM outputs on a 64-pin STM32F4 device?

Playing with a shift register and some LEDs

What is a flyback regulator?

What is the common pin configuration upon microcontroller reset?

Is this a proper use of a PNP transistor?

Load capacitance for RTC Crystal

How should I set up my text in Eagle for the maximum chance of success?

Building a simple mcu-driven array of LEDs

How do I determine the power rating of a stepper motor?

Graphical equivalent to HD44780 LCD controller

How to determine proper stepper polarity?

Is silver-bearing solder appropriate for general hobbyist use?