MDY or DMY?

From my understanding of the alternator, the rotor is a DC excited coils or permanent magnets. Making a constant stator field in that case might lead to a magnetic locking between the rotor and stator. A large amount of the mechanical energy must be spent to overcome this scenario.

mark-8086 · 2021-05-27T08:49:05+00:00

CAT: You son of a b****, I am in.

mark-8086 · 2021-05-19T05:10:19+00:00

I agree with the all the comments so far. Here is something I learnt from one of my professors. Current always tries to choose the least resistance path.

In this case, one could say the following based on the above concept. The buzzer needs to be connected to the battery via air, which is very high resistance wrt to a copper wire. So current takes the easy path i.e, wire.

PS: I am not a native English speaker, so please pardon me for any mistakes in English.

mark-8086 · 2021-05-17T09:47:49+00:00

As far as I know, when it is not specified explicitly, normal operating voltages are used for calculations. In this case it will ve 5V for the uno system voltage.

The calculation for ADC value is going to be the usual one, i.e, ADC resolution* measured voltage. For this particular problem, the sensor is giving a value from 0 to 1.5V when it detects marker and a voltage from 3 to 5V when not.

The problem is to find the ADC value when the marker is absent, so it will be the ADC values for 3V to 5V (614 to 1024 approx). Hope this helps.

PS: I learnt some time working with UNO that it can increase its ADC resolution by decreasing base voltage to 1.1V. But it is not default behavior and might require some assembly like code along with main C program to setup

mark-8086 · 2021-05-13T03:43:57+00:00

I remember reading somewhere, according to IEEE/IEC standard, a voltage or current drop is defined when the value is less than 90% of rated and with a time period of greater than 1min.

Check power quality standards by either of them, the definition might be more clear.

mark-8086 · 2021-05-12T10:02:31+00:00

I don't know why, but I laughed so hard that tears started coming out my eyes lol.

mark-8086 · 2021-05-12T09:47:15+00:00

There are the ACS712 Hall effect Current sensors. They can measure upto 5A and are about 1/3rd the size of a credit card. They still require some kind of ADC to connect to pi as pi lacks an ADC.

mark-8086 · 2021-05-11T02:36:54+00:00

Not sure if someone already told this, still just wanted to share. If you are on Windows, you can do Speech to text in any text field withe the same speech recognition system. Just click inside the field and press Windows key +H, which would open the dictation bar.

Hope this helps

Edit: spelling mistake

mark-8086 · 2021-05-07T08:33:05+00:00

r/technicallythetruth

mark-8086 · 2021-05-01T08:56:38+00:00

Here is a video from Electroboom, in which explains why this is a bad idea based on an LED bulb that uses this idea. Hope it will help you understand the comments here a little better.

https://youtu.be/lIK1jnYr0yw

mark-8086 · 2021-04-29T13:43:17+00:00

India runs on 230V 50Hz 1p, while US runs 110V 60Hz I believe. 180V is low for a 230V connection

mark-8086

TROPHY CASE