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Electrical Engineering : Recent Questions and Answers (Page 29)

Find answers to your questions about Electrical Engineering or help others by answering their Electrical Engineering questions.

How to detect when the lid of a box is loosened (as soon as the screws are unscrewed)?

I have an aluminium box (dimension about 10 × 10 × 10 cm) with a lid closed with 4 screws (such as this: https://www.hammfg.com/electronics/small-case/diecast/1590). I would like...

Asked on 11/14/2021 by Bau

2 answer

Switching a relay with a 5V PWM circuit

I have a coil that has the following specs:Coil Resistance: 123 ohmsCoil Current: 97.5 mASwitching Voltage: 14 VDCI am trying to use a 5V PWM output from an ECU to...

Asked on 11/14/2021 by SideSwipe PB

0 answer

simulating gain vs parameter in LTSpice

I tried to dc sweep V3 in my circuit and measure the gain.But it does not give a correct result. What I am trying to do is actually recreating...

Asked on 11/14/2021

2 answer

Importance of Sine Waves And Maxwell's Equations

Sine waves, by a huge margin, are the most important waveform in electronics - we measure a circuit's frequency response with sine waves and represent all other signals through sine...

Asked on 11/14/2021

2 answer

Is this a proper way to find the derivate of a 12-bit ADC?

I'm seeking a solution to find the derivative of an 12-bit ADC. It's for STM32 but let's say it's for likely for an arbitrary micro controller.while(1){ uint16_t a1...

Asked on 11/14/2021 by MrYui

3 answer

STM32L073xx Internal Bootloader - Get Flash Size issue

I tried recently to develop custom app flasher (based on stm32loader python module) for STM32L073xx microcontrollers but I stuck at one point. This lib tries to obtain flash size...

Asked on 11/11/2021 by voldi

1 answer

Problem in IR2112 use

What is wrong in this connection diagram. I had provided pwm with 20kHz and 5volts. But at the R3 I am not getting...

Asked on 11/11/2021

2 answer

Maximum Initial cutrent parameter of Lead-acid batteries

On lead-acid batteries, there is a parameter called "maximum initial current" which is generally written on it. I have added some pictures of it at the end of the question....

Asked on 11/11/2021 by Sourav Ghosh

1 answer

Using car radio output jacks for input

On the backside of my Sondpex RUSX903 car radio I found two RCA jacks: a red and a white one. With an adapter cable I connected these to my cellphone...

Asked on 11/11/2021 by user1785730

1 answer

Mplab X IDE insists I'm trying to change protected boot memory even though all CodeGuard options are disabled

I'm new to this whole thing, so forgive me if I'm missing something obvious, but the only relevant thing I could find is over 9 years old,...

Asked on 11/11/2021 by user1999728

0 answer

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