User abdullah kahraman

42 votes

8 answers

38k views

Which configuration is better for pulling down an NPN transistor's base?

transistors pulldown

asked Apr 16, 2012 at 9:49

23 votes

1 answer

17k views

How to do pulling up or down correctly when interfacing a microSD card?

microcontroller microsd

asked Sep 5, 2012 at 14:35

14 votes

1 answer

8k views

How to measure pulse width of an IR signal using an 8-bit PIC?

microcontroller pic frequency-measurement

asked Jul 4, 2012 at 20:45

14 votes

3 answers

16k views

Where should I put the kickback diode in a transistor switch?

transistors diodes kickback

asked May 1, 2012 at 15:25

13 votes

10 answers

29k views

How to make IR proximity detector immune to the daylight?

infrared proximity-sensor

asked Jan 11, 2012 at 11:11

12 votes

3 answers

8k views

Audio Amplifier PCB Design Tips

pcb audio pcb-design amplifier

asked Oct 9, 2011 at 12:10

11 votes

6 answers

2k views

What is the reason my PIC16 multitasking RTOS kernel doesn't work?

microcontroller pic c assembly rtos

asked Jun 11, 2012 at 7:42

9 votes

3 answers

4k views

SMPS PCB Design Critic

pcb layout switch-mode-power-supply buck

asked Aug 9, 2011 at 17:19

8 votes

4 answers

2k views

Can I create a backside "copper polygon" of the switch node in an SMPS?

power-supply switch-mode-power-supply emc thermal

asked May 18, 2012 at 5:05

7 votes

3 answers

3k views

How to implement simple stack switching in PIC12/16 cores?

pic rtos stack

asked Jun 8, 2012 at 16:26

7 votes

2 answers

10k views

Inductive kick-back voltage calculation

diodes inductive kickback

asked Feb 4, 2012 at 11:05

7 votes

3 answers

7k views

What is the reason this USB battery charge circuit will not work without a diode?

usb transistors battery-charging

asked Feb 8, 2013 at 13:25

6 votes

2 answers

11k views

How to realize this transfer function with OP-AMPs?

operational-amplifier transfer-function

asked May 24, 2013 at 14:51

6 votes

2 answers

508 views

What is this IC marked "1Y=61J"

identification markings

asked Sep 2, 2013 at 11:11

6 votes

3 answers

3k views

What is causing the oscillation in the feedback loop of an SMPS?

operational-amplifier switch-mode-power-supply constant-current feedback

asked Oct 18, 2012 at 18:47

6 votes

1 answer

4k views

How come a charge pump works without a reservoir capacitor?

charge-pump

asked May 6, 2012 at 17:33

6 votes

2 answers

834 views

Crosscoupling in SMPS PCB layout

pcb-design switch-mode-power-supply

asked Aug 5, 2011 at 13:53

6 votes

1 answer

10k views

Why do we need 100nF cap in the output of an SMPS?

capacitor switch-mode-power-supply decoupling-capacitor

asked Dec 16, 2011 at 9:15

5 votes

2 answers

6k views

How to configure the internal oscillator in a PIC16F616?

pic oscillator timer

asked Apr 18, 2012 at 15:43

5 votes

1 answer

4k views

PORTB Interrupt On Change changes state unintentionally

microcontroller pic interrupts

asked Mar 9, 2012 at 21:38

5 votes

3 answers

2k views

Is a parallel capacitor needed in this application?

capacitor ac

asked Dec 13, 2013 at 13:02

4 votes

2 answers

2k views

What is this PCB spark-gap on common-mode-choke for?

pcb-design

asked Feb 16, 2017 at 7:23

4 votes

2 answers

7k views

How to control X9C102 digitally controlled potentiometer?

microcontroller digital-potentiometer

asked Feb 6, 2013 at 11:50

4 votes

3 answers

5k views

How much capacitance do I need in the input of LM78L05

capacitor voltage-regulator decoupling-capacitor

asked May 3, 2012 at 17:07

4 votes

1 answer

3k views

Are small valued capacitors effective in the device power input?

pcb-design decoupling-capacitor decoupling

asked Apr 6, 2012 at 6:09

4 votes

2 answers

3k views

I2C - Cannot read temperature from TC74 with PIC16F887

pic temperature i2c noise

asked Jul 22, 2011 at 18:08

3 votes

1 answer

2k views

Designing a low-pass filter

power filter noise

asked Oct 4, 2011 at 13:22

3 votes

2 answers

3k views

Interfacing a keypad with a microcontroller

pic keypad

asked Mar 26, 2012 at 15:50

3 votes

3 answers

6k views

How does this OP-AMP offset voltage measuring circuit work?

operational-amplifier how-does-it-work

asked Jan 15, 2012 at 12:52

3 votes

4 answers

457 views

Is this noise in current amplifier feedback because of my PCB design?

pcb-design

asked Jun 20, 2017 at 6:40

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54 Questions

Which configuration is better for pulling down an NPN transistor's base?

How to do pulling up or down correctly when interfacing a microSD card?

How to measure pulse width of an IR signal using an 8-bit PIC?

Where should I put the kickback diode in a transistor switch?

How to make IR proximity detector immune to the daylight?

Audio Amplifier PCB Design Tips

What is the reason my PIC16 multitasking RTOS kernel doesn't work?

SMPS PCB Design Critic

Can I create a backside "copper polygon" of the switch node in an SMPS?

How to implement simple stack switching in PIC12/16 cores?

Inductive kick-back voltage calculation

What is the reason this USB battery charge circuit will not work without a diode?

How to realize this transfer function with OP-AMPs?

What is this IC marked "1Y=61J"

What is causing the oscillation in the feedback loop of an SMPS?

How come a charge pump works without a reservoir capacitor?

Crosscoupling in SMPS PCB layout

Why do we need 100nF cap in the output of an SMPS?

How to configure the internal oscillator in a PIC16F616?

PORTB Interrupt On Change changes state unintentionally

Is a parallel capacitor needed in this application?

What is this PCB spark-gap on common-mode-choke for?

How to control X9C102 digitally controlled potentiometer?

How much capacitance do I need in the input of LM78L05

Are small valued capacitors effective in the device power input?

I2C - Cannot read temperature from TC74 with PIC16F887

Designing a low-pass filter

Interfacing a keypad with a microcontroller

How does this OP-AMP offset voltage measuring circuit work?

Is this noise in current amplifier feedback because of my PCB design?