0
votes
0answers
8 views

How can we calculate the required torque to move a massive object by means of gear assembly ? [closed]

i need to know the power of a motor in Hp, required to move a vehicle of about 150 Kg. vehicle is equipped with gear assembly. vehicle is required to run at 20 to 25 Km/h. image provided is a cart ...
4
votes
2answers
2k views

Strategies against 50 Hz mains hum on detector signals?

I'm having problems with a strong 50 Hz mains hum on signals created by photodetectors. I assume that they are due to ground loops and I realize that the best option would be to remove those. What are ...
1
vote
3answers
371 views

Intensity distribution of a LED light source

The light source: 190 high power LEDs in NIR. I have the datasheet of the LED. I want to make a graph showing the spatial distribution, and to measure the intensity of the beam on the whole field of ...