Kranulis‭

The particular IC I ran into this issue with was DS3231 RTC. The pin configuration shows: However, the datasheet specifies To my knowledge, 'N.C' appears on ICs when it is decided to use a cer...

1 answer  ·  posted 3y ago by Kranulis‭  ·  last activity 3y ago by Olin Lathrop‭

When soldering Micro-USB or USB-C connectors by hand, flux is applied generously. This sometimes results in flux getting inside the connector housing, making it sticky and creating high physical re...

1 answer  ·  posted 4y ago by Kranulis‭  ·  last activity 1y ago by Lorenzo Donati‭

After some research I found some reasoning behind the voltage range: 1500V is sufficient to destroy the somatic nervous system, which is responsible for consciousness and feeling of pain. After ap...

posted 4y ago by Kranulis‭  ·  edited 4y ago by Kranulis‭

At some point the MOSFET approach will lose to diode if current is sufficiently high: The drain-source resistance will cause the forward voltage drop to go up linearly. So picking a MOSFET with ...

posted 3y ago by Kranulis‭

While doing some reading on RF designs I ran across this paragraph: I have never designed an RF circuit, but all the PCB trace antennas I have seen on development boards are square. For example,...

2 answers  ·  posted 3y ago by Kranulis‭  ·  last activity 3y ago by TonyStewart‭

A quick google search provides the answer. Lower capacitance will shift the graph to the right. 0 effort, should be closed.

posted 3y ago by Kranulis‭

One of the most annoying things about stackexchange has always been the borderline fanatic post closing or duplicate marking. Another question in meta was posed some time ago about the added value ...

3 answers  ·  posted 4y ago by Kranulis‭  ·  last activity 3y ago by leroy105‭

Measuring the resistance of water from my tap I got 500kOhm. Adding considerable amount of salt brought it down to 20kOhm: The question I have is why water is such a danger for short circuits if t...

4 answers  ·  posted 3y ago by Kranulis‭  ·  edited 1y ago by Lorenzo Donati‭

I have had my soldering iron tips degrading at ridiculous rates. Granted, they are not very expensive, but sometimes it takes less than 8 hours of soldering for them to degrade to the point where t...

2 answers  ·  posted 4y ago by Kranulis‭  ·  last activity 4y ago by Pete W‭

My step-up converter makes audible noise both with and without a load.I am almost certain it is the inductor, because when I hold my finger on it I can feel vibration and it gets quieter. Unfortuna...

2 answers  ·  posted 4y ago by Kranulis‭  ·  last activity 4y ago by Olin Lathrop‭

I want to include a wirelessly charged battery pack into my design. However, I am worried that the wireless charging could damage my main logic board. What considerations, apart from not having loo...

1 answer  ·  posted 4y ago by Kranulis‭  ·  last activity 4y ago by Olin Lathrop‭

I was looking at this design: It uses MC34063 as switching controller. I wanted to adapt this circuit, and I was busy trying to pick R1 value. The datasheet has following formulas: The issue I hav...

2 answers  ·  posted 4y ago by Kranulis‭  ·  last activity 4y ago by Andy aka‭

One reason could be that N type MOSFET can switch loads that are in Drain, meaning that whatever the load voltage, you can turn it on/off directly with any microcontroller, provided that the MOSFET...

posted 3y ago by Kranulis‭  ·  edited 3y ago by Kranulis‭

I recall vividly a story told by my grandfather who worked with high voltage power lines. A worker drove heavy machinery into 700kV line and then jumped out of the truck, instantly combusting upon ...

2 answers  ·  posted 4y ago by Kranulis‭  ·  last activity 4y ago by manassehkatz‭