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Electrical Engineering : Recent Questions and Answers (Page 3)

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

Bit Bang SCCB Issue

I am trying to bit bang an SCCB communication between an OV7670 camera module and an STM32F407 Discovery Board. In the datasheet, it is stated that the slave write and...

Asked on 01/02/2022 by user234217

1 answer

What causes a potentiometer to get "jittery" after cleaning?

I recently cleaned a potentiometer's resistive element by using general purpose contact cleaner (CRC). I now find that there is "jitter" or non-linear increase in the resistance as I...

Asked on 01/02/2022 by Steve Guidi

0 answer

Connecting signalling lines of the multiple devices with different power sources

I started to develop a simple device and this question arose. I need to make some uC device that will be connected to the PCI-E bus via M.2 socket. And...

Asked on 01/02/2022 by BbIKTOP

2 answer

Linearizing multi-star network for home automation

I'm designing a communication network for private home automation. My design goals are:Local wrt network changes. That is, changing one part of the network should not require modification of the...

Asked on 01/02/2022

1 answer

Want to reverse AC Motor direction - need help

I have this old Westinghouse motor it turns clockwise and I need counter clockwise. It has 3 leads at a junction on the rear, 2 line and 1 middle lead...

Asked on 01/02/2022 by Dlambe

0 answer

Wiring for stereo mic using MAX9814

My goal is to test some algorithms for sound localization, so I connected two microphones (MAX9814 boards from adafruit) to my soundcard. In the future I want to use four...

Asked on 01/02/2022 by M. Stern

2 answer

DC Motor Efficiency at a given operating point

I'm trying to select a motor for a design application that cares mostly about efficiency. Given a required torque and RPM output from the motor, I feel like it should...

Asked on 01/02/2022

1 answer

Mic amplifier noise

I build a mic amplifier for a standard hands free (Apple 4-pole jack). However, even without anything plugged into the jack there's audible noise at the output (MIC_IN in diagram)....

Asked on 01/02/2022 by roc1

3 answer

How BLE central determine the connection interval

After connection established between central and peripheral, they start communicate at specified intervals called connection interval. As far as i know, the interval determined by central not peripheral. But the...

Asked on 01/02/2022

1 answer

What is the formula for measuring Antenna range?

According to example 1 of this website The formula for measuring the antenna range is this => D = radical(2hR)which R is 6400km for earth and...

Asked on 12/31/2021 by aidin jj

0 answer

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