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17 votes
4 answers
5k views

Why are 555 timers so prevalent? [closed]

16 votes
8 answers
42k views

Are TV coaxial cables compatible with WiFi antennas?

16 votes
3 answers
9k views

Can a thyristor be built from two transistors?

16 votes
2 answers
4k views

Through-Glass WiFi Antenna

10 votes
4 answers
9k views

What's the difference between a laser diode and ordinary LED?

6 votes
1 answer
13k views

How do LCD screens repair themselves?

3 votes
2 answers
939 views

Li-ion Battery Rejuvenation

3 votes
1 answer
9k views

What are USB Connectors made of?

2 votes
2 answers
332 views

How does IR thermal vision work?

1 vote
3 answers
513 views

Discerning between transistor types

1 vote
6 answers
3k views

Time delayed deactivation of a circuit

1 vote
1 answer
1k views

Best Lamp Dimming Circuit? [closed]

0 votes
4 answers
841 views

Simplest Inverter

0 votes
1 answer
1k views

Identifying damaged, burnt out, or missing components [closed]

0 votes
2 answers
192 views

Is wireless technology only possible due to inductance?

0 votes
5 answers
2k views

Do 240V AC switches only need to open the active wire?

0 votes
2 answers
303 views

Bosch Glue Pen: Bypassing automatic timeout [closed]

0 votes
1 answer
2k views

Bypassing refrigerator door alarm piezoelectric buzzer

0 votes
0 answers
139 views

measuring wireless (inductive) power supplies

0 votes
2 answers
212 views

Regulating precision heating

0 votes
1 answer
308 views

How to measure extremely high temperatures?

0 votes
2 answers
143 views

Insulate active or neutral?

0 votes
3 answers
9k views

How to increase the power of an electric motor?

0 votes
2 answers
854 views

designing a mains powered car jump starter [closed]

0 votes
2 answers
4k views

Transistor use - Basic fan speed controller

0 votes
2 answers
324 views

Basic LC Circuit: Oscillator or Resonator?

0 votes
1 answer
166 views

Secondary linear lamp circuit interrupter switch

0 votes
2 answers
2k views

What is the simplest possible monostable 555 timer circuit?

0 votes
1 answer
169 views

Component ID: AA3 03

0 votes
1 answer
101 views

~12VDC+ Automatic Dimmer Switches