User Christianidis Vasileios

12 votes

4 answers

2k views

Why are these SMD heatsinks designed to not touch the IC?

thermal heatsink

asked Sep 17, 2021 at 9:29

6 votes

6 answers

1k views

Boost voltage without switching

asked Apr 21 at 9:29

5 votes

3 answers

924 views

Two layer FR4 PCB: should you place GND pour on signal layer?

ground crosstalk two-layer-pcb gnd-pour

asked Mar 27, 2021 at 11:25

4 votes

3 answers

258 views

Weird rectifier attenuation or bad probing?

ac mains high-voltage bridge-rectifier

asked May 28, 2021 at 12:31

4 votes

3 answers

1k views

Convert the type of calculation result in if() to uint8_t

microcontroller c avr-gcc atmel-studio

asked Aug 18, 2021 at 8:10

3 votes

2 answers

392 views

What capacitor voltage rating should I use?

capacitor buck constant-current bootstrap

asked Sep 15, 2021 at 11:00

3 votes

2 answers

280 views

Potentiostat circuit: Cannot understand how op-amp behaves

operational-amplifier potentiostat

asked Feb 7 at 15:49

3 votes

3 answers

430 views

Op amp Power supply splitter with totem pole

operational-amplifier buffer emitter-follower virtual-ground

asked Mar 30, 2021 at 15:10

2 votes

0 answers

201 views

Is there a Kicad Library loader for Linux?

pcb kicad library

asked Mar 14, 2021 at 17:25

2 votes

1 answer

102 views

AC filtering: Medical vs Standard Version

ac filter mains medical

asked Nov 19, 2021 at 15:09

2 votes

1 answer

160 views

Faraday Cage: incomplete graph?

faraday-cage

asked Jan 1 at 11:19

2 votes

3 answers

79 views

LM1085 constant current mode: changing input voltage deviates the ADJ pin in a non-linear fashion

constant-current lm1085

asked Jun 6 at 13:12

1 vote

1 answer

30 views

USB isolated HUB : USB Data In series component identification

usb usb-hub isolator

asked Jul 26 at 14:23

1 vote

2 answers

157 views

How to interpret S parameters on a Smith chart

s-parameters smith-chart

asked Jan 25 at 19:42

1 vote

0 answers

56 views

LMP91000 noise issue when using MCP4725 as Vref

operational-amplifier noise ripple lmp91000

asked Feb 2 at 17:31

1 vote

1 answer

57 views

end-fire antenna array: find the angles of the fire-end array for the minor Lobe maxima

antenna balanis end-fire

asked Apr 26 at 19:06

1 vote

2 answers

91 views

Techniques how to join two wearable-flexible pcb parts

flexible

asked May 3 at 10:15

1 vote

0 answers

63 views

Servo creates a constant "angle error" depending on its original position

pwm servo error

asked Nov 12, 2021 at 10:40

1 vote

0 answers

68 views

Room's AC fan on/off switching creates interference on USB cable

rf usb noise mains

asked Nov 15, 2021 at 8:57

1 vote

1 answer

91 views

AC line capacitors: why did the safety breaker activate?

ac mains ac-filtering

asked Feb 14 at 10:44

1 vote

0 answers

43 views

AVR MCUs parametric search shows number of USB modules but no USB interface

microcontroller usb avr

asked Mar 17 at 11:32

1 vote

1 answer

54 views

What is the Bluetooth Version of CC2541 (HM10)

bluetooth hm-10

asked Mar 17 at 13:11

1 vote

1 answer

50 views

What is k variable on antenna theory

antenna

asked Apr 10 at 12:46

1 vote

1 answer

68 views

What is "SW current limit" on Led Driver?

led-driver constant-current

asked Sep 13, 2021 at 8:30

1 vote

1 answer

1k views

STM32 ST-Link Unitily does not have the latest firmware

stm32 st-link update

asked Oct 27, 2021 at 18:30

1 vote

1 answer

50 views

FT230XS is not in sync when trying to burn bootloader

bootloader avrdude

asked Sep 30, 2021 at 15:12

1 vote

1 answer

150 views

Decoupling capacitor at the Drain of N-Channel mosfet when using saturation mode?

mosfet decoupling-capacitor

asked Oct 6, 2021 at 14:05

1 vote

1 answer

114 views

How to tell a inductor's self-resonant frequency if its not mentioned in datasheet

inductor self-resonant-frequency srf

asked Oct 7, 2021 at 9:06

1 vote

1 answer

113 views

What is this black thing inside LEDs?

led

asked Sep 1, 2021 at 11:27

1 vote

1 answer

67 views

How to use the "Function type" fans

brushless-dc-motor fan

asked Sep 9, 2021 at 8:16

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81 Questions

Why are these SMD heatsinks designed to not touch the IC?

Boost voltage without switching

Two layer FR4 PCB: should you place GND pour on signal layer?

Weird rectifier attenuation or bad probing?

Convert the type of calculation result in if() to uint8_t

What capacitor voltage rating should I use?

Potentiostat circuit: Cannot understand how op-amp behaves

Op amp Power supply splitter with totem pole

Is there a Kicad Library loader for Linux?

AC filtering: Medical vs Standard Version

Faraday Cage: incomplete graph?

LM1085 constant current mode: changing input voltage deviates the ADJ pin in a non-linear fashion

USB isolated HUB : USB Data In series component identification

How to interpret S parameters on a Smith chart

LMP91000 noise issue when using MCP4725 as Vref

end-fire antenna array: find the angles of the fire-end array for the minor Lobe maxima

Techniques how to join two wearable-flexible pcb parts

Servo creates a constant "angle error" depending on its original position

Room's AC fan on/off switching creates interference on USB cable

AC line capacitors: why did the safety breaker activate?

AVR MCUs parametric search shows number of USB modules but no USB interface

What is the Bluetooth Version of CC2541 (HM10)

What is k variable on antenna theory

What is "SW current limit" on Led Driver?

STM32 ST-Link Unitily does not have the latest firmware

FT230XS is not in sync when trying to burn bootloader

Decoupling capacitor at the Drain of N-Channel mosfet when using saturation mode?

How to tell a inductor's self-resonant frequency if its not mentioned in datasheet

What is this black thing inside LEDs?

How to use the "Function type" fans