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Electrical Engineering

Questions tagged [drill]

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37 questions
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0 votes
4 answers
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I am looking to build a prototype for a project of mine. There are two enclosures that I am going to be using. One made of plastic and another aluminum. I want to keep the enclosures wind and dust ...
Rabboni Rabi's user avatar
  • 31
2 votes
2 answers
380 views

I want assistance in determining an electric motor type suited to building a device for palm oil harvesting. Here is an example of one working palm cutting machine. This machine works similar to a ...
visahl's user avatar
  • 31
4 votes
4 answers
12k views

This question is the closest thing that I found similar to my needs, but it is still quite far from the answer I need. I have 2 cordless power drills, a 12V green Bosch and an 18V DeWalt. Their ...
virolino's user avatar
  • 593
0 votes
1 answer
297 views

I would like to start using the hole tolerances in Altium to provide more information to my fab house. What I'm trying to figure out is the interaction with the IPC fabrication allowances I have ...
Kontakt's user avatar
  • 61
2 votes
1 answer
434 views

I need your help to try to repair a battery charger of a Black & Decker drill. The charger is composed of two devices; one is a simple power supply, and the second one is the BMS. Unfortunately my ...
itseeder's user avatar
  • 121
3 votes
4 answers
260 views

Story Get my hands on two Metabo (made in Germany) cordless DC battery powered hand drills previously thrown away because of..... the batteries, how sad. The overall construction is simple however ...
Codebeat's user avatar
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0 answers
249 views

I have an angle grinder which has a maximum power of 950 W. My country provides 220 V as voltage source. It has only one speed, so I want to make a dimmer to control its speed. I used this circuit but ...
Bassem Faris's user avatar
  • 1
6 votes
2 answers
421 views

I'm working on an eighteen-layer board right now. Almost all of the signal layers have high-speed, single-ended traces that should run up to 15 gbit/s. The vias for these high-speed traces will be ...
wisner's user avatar
  • 207
0 votes
0 answers
355 views

I’m very desperate to solve this problem so any advice is greatly appreciated. I got a deal on a 9A corded drill and took it apart today after testing to make sure it has enough power to do what I ...
Jordan Isaacson's user avatar
  • 1
0 votes
0 answers
145 views

It is desired to be able to control the speed of my rotary drill as well as measure the average torque (or is RMS torque a thing?) of the universal AC motor. I am using this torque equation: τ = (I * ...
TheWillderness's user avatar
  • 1
1 vote
1 answer
294 views

I'm trying to repair a drill where the switch got broken. It's turning into something more difficult than I expected due to several issues. One of them is that the brush wires got peeled due to some ...
Pere's user avatar
  • 117
1 vote
2 answers
151 views

I'm using a relay for a PCB, but have trouble understanding some of the specs for the recommended hole drill sizes. As shown below, the spec sheet indicates a "6-1" diameter hole. What is ...
plu's user avatar
  • 743
1 vote
1 answer
258 views

I'm thinking about using a capacitive touch screen (the touch layer only, no display) to detect the position of two moving parts. Each part would have its 'stylus' just above the screen to mark the ...
Josef Kufner's user avatar
  • 113
1 vote
4 answers
2k views

Using KiCad, is there a way to have a pad with an slot shape (referred to in KiCad as "oval") be exported properly as a drill (.drl) file? The pad in KiCad looks like Fig. 1 below. But after ...
plu's user avatar
  • 743
21 votes
3 answers
3k views

I am reading this datasheet and I want to drill the correct size hole into the board and I am confused what 5-ø1.2 means. I can't understand what the 5 and - sign mean? Your help would be greatly ...
Mick Kelly's user avatar
  • 327

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