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Electrical Engineering : Recent Questions and Answers (Page 50)

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

Calculate LifePo4 charging amps

How do I work out the optimum charging amps for a life 2p4s battery? I have 8 x 66ah sinopoly batteries.http://www.sinopolybattery.com/userfiles/files/SP-LFP66AHA.pdf Charge Specs* Standard Current...

Asked on 01/18/2021

1 answer

ADC variable reference voltage

I'm working on a design which must read temperature using RTD pt100 with at least 0.5 degree Celsius accuracy in the range -10 to 50 degrees . I want to...

Asked on 01/18/2021 by sadegh satari

2 answer

What's the point in a preamp?

I'm talking in the context of guitar amps, but I assume that this question is relevant for any type of audio amplifier. Very often in amplifier schematics I see two...

Asked on 01/17/2021 by Jacob Garby

6 answer

In magnetically coupled coils, what is the difference between coefficient of coupling and the percentage of a flux linked to the other coil?

I have encountered this problem.A coil A of 400 turns and another coil B of 500 turns lie near each other so that 20% of the flux produced in A...

Asked on 01/17/2021

1 answer

How to use USB 3.0 inner cables by color?

I have an USB 3.0 cable I want to use only for powering a basic circuit with 5V and the max current I can get from USB 3.0. Once cut,...

Asked on 01/16/2021

0 answer

Mechanical vibrations picked by an audio amplifier (Strange microphone efect when there is no microphone)

I opened today my Philips audio system (30W woofer + 20w satellites) because it has a lot of noise.There is something weird with that amplifier: when I knock into...

Asked on 01/14/2021 by Ultralisk

2 answer

Degradation of resonant sine wave signal in coil/solenoid after adding second layer

I have hand-wrapped a couple of air core tube coils/solenoids with 50 gauge wire (0.001 inch diameter). My goal is to obtain a resonant frequency of ~10 khz without the...

Asked on 01/13/2021 by Justin Kennedy

1 answer

Difference between fuse diode and diode - is there is any?

I have a BSA motorcycle with a couple of lucas 1 and 2 amp diodes in the electrics. It is hard to find the original 2 amp lucas diodes so...

Asked on 01/12/2021 by Mark Crowder

0 answer

Phase margin is 90 degrees but transient step response shows overshoot

The bode plot of the loop is as shown here The transient step response looks like this ...

Asked on 01/12/2021 by SBO

1 answer

Inconsistent bootloader failure ATMEGA328P

I am creating a wireless charger with a microcontroller on it. I have assembled 3 boards. One of them has a microcontroller that works fine - burns bootloader and uploads...

Asked on 01/11/2021 by bem22

1 answer

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