All Questions
Tagged with electrical-engineering design
30
questions
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So I am building this mechanism and I need to bring the rotation down without changing speed or direction
Just like the Title said I need to move rotation down without changing speed or direction. I can’t use belts because since I will be using a motor, when it stops the belts won’t.
0
votes
1
answer
22
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Can this new AC motor/generator design work?
I'm currently in the works of developing a vertically suspended flywheel, and I'm trying to figure out the best method to convert rotational energy to electrical energy and vice versa. I don't want to ...
- 105
0
votes
1
answer
129
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Would a conical-shaped solenoid be propelled by its interaction with the Earth's magnetic field?
I am wondering if the interaction between the magnetic field created by a conical-shaped solenoid and the Earth's magnetic field will result in this conical-shaped solenoid being propelled through the ...
- 303
1
vote
2
answers
762
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Braking system for a miniature ‘Drop tower’ rollercoaster
The tower itself is only max 400mm.
Designing the lifting system isn’t the problem but slowing down the gondola is posing a slight problem, any suggestions?
I have looked into using magnets but I can’...
- 11
0
votes
1
answer
128
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What would be the best capacitor to use for a railgun that uses a capacitor as the projectile?
I have had a long-time interest and fascination with railgun technology and for a long time I have wanted to build a small-scale, simple railgun as a scientific experiment. This railgun is designed to ...
- 303
0
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0
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47
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High speed linear actuator/motor design
I need to make a linear actuator to compress a spring 80mm in 0.1 seconds. This is a speed of 1600mm/s. It takes around 15kg of force to compress the spring. How can I design a linear actuator for ...
- 1
0
votes
1
answer
102
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How to design an electrical system on water?
Is there a way to design an electrical system (wires, resistors, batteries etc.) on the surface of water so that it doesn't sink, receives heat from water and doesn't deteriorate because of water ...
- 1
0
votes
2
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56
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Measuring angled surfaces with a lidar
I have been trying to create a sensor that detects when a golf club hits a golf ball. My idea was to have a lidar sensor to continuously poll the head of the golf club, and return a positive ...
2
votes
1
answer
62
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Power Electronics Project
Can I use 220-12v,1.5 Amps Stepdown transformer along with 12V 2A (KBP200) bridge rectifier to build a charger for 12v, 7.5AH battery or I should use transformer with Higher output, maybe 15V
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2
votes
1
answer
69
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Power a microcontroler with a motorcontroller?
I have a motor controller that operates at 10-50V and draws 5A controlling a 3V motor that draws less than 1A.
I had a an idea where I want to try to use a microcontroller to control this set up.
The ...
- 321
4
votes
1
answer
222
views
Mechanical/electronic chalkboard cleaning device to replace the conventional duster to clean the chalkboard
The chalk board duster which is used by teachers to wipe the chalkboard seems very agonizing for them. What new mechanical/electronic devices can be devised to replace conventional chalkboard duster ...
- 412
1
vote
1
answer
49
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Switching a Circuit on-and-off In-step with the Rotation of a Drive-shaft (Mechanically)
I'm working on a project. The Salient part here is a drive-shaft connected to a bearing, onto which a simple circuit is mounted. I want to switch the circuit on every $π$ and off for the other $π$ of ...
- 11
1
vote
1
answer
92
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Could a Jacob's Ladder produce enough hot air for a hot air balloon?
I am curious to know if a Jacob's Ladder would produce enough hot air to keep a hot air balloon afloat, or in other words, that it could be a substitute for a standard gas burner used for hot air ...
user26803
1
vote
0
answers
26
views
WEC linear inputs
I have seen some designs being made for linear generators for WEC(wave energy) applications. A buoy driving a shaft. But what if the shaft inside was a rack and pinion? If you converted the ...
2
votes
4
answers
3k
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When an elevator has two buttons next to it, ^ and v, what do they actually mean?
Both as a kid and as an adult, I've encountered elevators lined up next to each other, or single ones, which have two buttons on each floor (outside of the elevator):
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