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MicroservicesOnDDD
  • Member for 7 years, 2 months
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  • Philadelphia, PA, United States
18 votes
2 answers
2k views

Why is a MEMS device affected by helium but not hydrogen?

12 votes
2 answers
2k views

Why use aluminum wire in an (old) TV degaussing harness

11 votes
2 answers
2k views

What does this beautiful 8-winding magnetics do?

10 votes
4 answers
326 views

Why are modern telephone lightning arrestors less prone to (rectification) RFI problems than old ones?

10 votes
4 answers
4k views

For this Art of Electronics circuit, why aren't the transistors specified? And what transistors do I use?

10 votes
2 answers
337 views

Is a balancing diode really necessary for the Balanced Boost converter?

9 votes
3 answers
2k views

What is this style of PCB called? It's single-sided, with lots of orthogonal jumpers and strange "horns"

6 votes
2 answers
2k views

How to prevent "Def Con" and simulation running at femtoseconds / second (running forever) for 1,600-run simulation

6 votes
3 answers
677 views

Why so much space around these toroid windings?

4 votes
2 answers
729 views

Preventing oscilloscope magic smoke by inverter vs isolation transformer? Good idea or not? [duplicate]

4 votes
4 answers
2k views

What is a lime green LED used for?

4 votes
2 answers
762 views

Please offer comments, critique on self-resonating invented buck joule thief converter for third world use [closed]

3 votes
1 answer
612 views

How does a microwave oven transformer shunt help resonate the voltage doubling capacitor?

3 votes
2 answers
247 views

Can I increase the inductive component stored-energy of a Piezo Buzzer?

2 votes
1 answer
255 views

What is this black square component actually part of a light bulb "LED"?

2 votes
1 answer
175 views

What is going on regarding power toroid shielding? (some shielded, some unshielded, no apparent difference)

2 votes
3 answers
484 views

How to reduce NPN reverse base current on this interesting "Super Efficient Joule Thief"?

2 votes
2 answers
336 views

How to fix common error causing multiplexed LED segments to flash and dim

2 votes
1 answer
645 views

How to prevent square wave oscillation circuit from producing backwards sawtooth shapes in LTSpice4

2 votes
2 answers
467 views

The Joule Thief is what kind of oscillator? Armstrong? Relaxation? or what? Thanks!

2 votes
3 answers
145 views

Is there a Semisynchronous Buck Topology which mixes the advantages & disadvantages of both?

2 votes
2 answers
2k views

How much current should a car draw from a battery when it is off?

1 vote
1 answer
345 views

What "mode" is static electricity (lightning?) Is it common-mode, differential-mode? It seems half-way, or "mono"

1 vote
2 answers
1k views

In an isolation transformer, to what is the electrostatic shield winding attached?

1 vote
3 answers
2k views

Tradeoffs for NTC Thermistors regarding 10K vs 100K vs 1Meg etc

1 vote
1 answer
561 views

Efficiency question of # of LEDs for 6 volt 4 cell Joule Thief Flashlight circuit

1 vote
1 answer
1k views

How can I make this Component Tester more accurate?

1 vote
2 answers
136 views

Is there any MPU where the watchdog has its own clock?

1 vote
1 answer
889 views

What is a field effect rectifier diode (FERD) and what is it used for?

1 vote
3 answers
4k views

What is a power factor correction choke (PFC choke) and how does it work?