Electrical Engineering Questions, Problems & Solutions : TransWikia.com ~ Page 27

sConfig.SamplingTime = ADC_SAMPLETIME_28CYCLES_5;

sConfig.SamplingTime = ADC_SAMPLETIME_28CYCLES_5; This is an expression from ADC init function for stm32f1xx. I would like to know what this expression really does.I used cubeMX to generate code. Also kindly...

Asked on 11/16/2021 by Ananthakrishnan

1 answer

USB and LiPo power supply with charger

I'm having trouble designing a power supply circuit for a small microcontroller-based project. The board I'm building will be powered by a 3.7V LiPo battery most of the time, but...

Asked on 11/16/2021 by noearchimede

3 answer

Audio amplifier with strange open loop, is it an oscillator?

straight to the problem. Here is a picture of frequency response of my amplifier in the simulator (LTspice or Pspice both give same results). ...

Asked on 11/16/2021 by N. Bun Dem

1 answer

My BJT audio amplifier circuit isn't working as expected

I am trying to design an audio amplifier circuit using BJTs. These are the requirements of the circuit:Input signal: 50-100 mV (It's the output of my iphone's microphone.)2 W -...

Asked on 11/16/2021 by Henry Nguyen

1 answer

Derivation of this mho circle equation?

I'm picking through Protective Relaying Principles and Applications by Blackburn and Domin (4th ed), and am currently figuring out distance relaying. Intuitively, I understand their operation. However, I cannot figure...

Asked on 11/16/2021 by Michael Duncan

1 answer

Ohms law, resistance calculation

I'm new to electronics and I don't understand why you subtract source voltage by the components recommended voltage, but you just divide by the recommended amps...Why don't you subtract...

Asked on 11/16/2021 by TheAdmin

1 answer

Level transformation 0/+5 V TTL logic to +/-9V how to maximize gain and frequency range (DC to 4 MHz)

I see a lot of repeat answers and instructions how to convert dual supply levels to logic levels, but I have the inverse situation, converting 0/+5 V TTL logic to...

Asked on 11/16/2021

3 answer

Automatic Alcohol Dispenser: What is the Resistor's value for transistor?

I wanted to assemble the circuit below Link: https://www.instructables.com/id/DIY-Automatic-Alcohol-Dispenser-No-Arduino-Needed/ I read about the transistor's datasheet and I found out that...

Asked on 11/16/2021 by Beginner_Dude

0 answer

How does a Philips Hue Tap transmit a radio signal without a battery?

The Philips Hue Tap is a remote control for a Philips Hue lighting system. The buttons can be configured to trigger some action on the Hue bridge,...

Asked on 11/16/2021

0 answer

Does cassette tape change its velocity while playing?

Looking at the old cassette tape, From the POV of the head, let's say that it reads at speed $v$...

Asked on 11/14/2021 by Royi Namir

5 answer

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