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sharptooth
  • Member for 13 years, 1 month
  • Last seen more than 2 years ago
73 votes
6 answers
123k views

Why do many laptops run on 19 volts?

51 votes
3 answers
10k views

What's the reason to make power supplies external?

42 votes
3 answers
40k views

How is wristwatch with 10 years battery life possible?

39 votes
4 answers
19k views

How do transposition towers in transmission lines work?

31 votes
3 answers
13k views

Why are lightbulbs considered resistive load?

28 votes
6 answers
25k views

Why exactly do chips start malfunctioning once they overheat?

25 votes
5 answers
5k views

Why are consumers located near high-voltage lines typically not connected to those lines but instead are connected through a lower high-voltage line?

21 votes
4 answers
4k views

Do conductors age under reasonable electric load?

21 votes
5 answers
3k views

Why is it so problematic to have close to zero standby power consumption?

21 votes
6 answers
15k views

How does earthing work when earth is dry?

19 votes
2 answers
8k views

How fast can a Li-Ion battery be charged?

19 votes
2 answers
691 views

What's the need for conductive bridges between the regions of a smart card contact pad?

17 votes
9 answers
1k views

What electrical design reasons are there for making rechargeable batteries non-removable?

17 votes
4 answers
6k views

Why are laptop power supplies marked "IT equipment only"?

16 votes
4 answers
4k views

Why does electric arc in a switch prefer a curved path over a straight path?

13 votes
3 answers
2k views

Is there any sense in this technique for charging Li-Ion batteries?

13 votes
3 answers
2k views

What's the purpose of such weird wiring inside this smart card?

12 votes
2 answers
1k views

Does switched-mode power supply feature galvanic separation?

12 votes
4 answers
11k views

Why are more powerful tools using higher voltage?

12 votes
5 answers
7k views

Why would a power supply unit with insulating case and galvanic separation need a grounded power cord?

11 votes
3 answers
14k views

How durable is a supercapacitor?

11 votes
7 answers
25k views

What causes overvoltage in power grid?

10 votes
2 answers
1k views

How is the fact that the resistor used to limit the LED current dissipates some of energy addressed in lighting applications?

10 votes
4 answers
13k views

How practical would a car booster using supercapacitors be?

10 votes
3 answers
2k views

Does solder being or not being uniformly thin and shiny really indicate reliability of the circuit?

10 votes
5 answers
21k views

How does corona ring help against corona discharge?

10 votes
3 answers
11k views

Why would a power cable need copper wire shielding?

10 votes
4 answers
13k views

How is fully charging a Li-Ion battery in 35 minutes possible?

10 votes
3 answers
15k views

How is transition from three-phase distribution without neutral to three-phase consumption with neutral achieved?

10 votes
3 answers
4k views

How realistic is the famous "Bill sux" picture of a chip internals artwork?

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