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jose.angel.jimenez
  • Member for 10 years, 8 months
  • Last seen this week
  • Madrid, Spain
23 votes

Are UV LEDs really dangerous?

18 votes

Electronic aspects of iPhone 3.5mm audio output

14 votes
Accepted

What is a safe max. discharge rate for a 12V lead acid battery?

14 votes
Accepted

Negative feedback capacitor in Op-Amp comparator circuit

11 votes
Accepted

Ferrite bead vs common mode choke

11 votes
Accepted

Inductor selection for obtaining a noiseless analog power rail

10 votes
Accepted

What is the name/type of this DC power connector?

8 votes
Accepted

NFC reader long range antenna

4 votes

How can I view USB traffic on an oscilloscope?

4 votes

Linear regulator (L7805CV) outputting 5.8V

3 votes
Accepted

Why is the Vbe threshold of a Si NPN transistor 0.7V and not -0.7V?

3 votes

Why is this BJT not going into saturation?

3 votes
Accepted

BJT vs MOSFET for very low power flyback converter

3 votes

DC boost converter and Ohm's Law

2 votes

Difference between capacitors of same value but different sizes

2 votes

What are some smallest, cheapest microcontrollers with USB built in?

2 votes

Signs of overheated smd chip

2 votes

Using a microcomputer in the drive circuit of a piezo buzzer

2 votes

What's the difference between small signal bipolar junction transistors (BJTs) marketed as switches vs. amplifiers?

2 votes
Accepted

Measure battery voltage

2 votes
Accepted

Sending multiple channels with bluetooth

2 votes

Why do microcontrollers have so little RAM?

1 vote

Is there any current gain in a FET amplifier?

1 vote
Accepted

Linear regulator LM1084 5.0V capacitors choice

1 vote

Is a ceramic heater good to use in an etching process?

1 vote

PCB prototyping with Presensitized copper boards

0 votes

is any other technology than semiconductor transistors or vacuum tubes that can be used as active devices?

0 votes

MP1584 DC/DC step down converter cause whine in audio, how to avoid?

0 votes
Accepted

Sensing power supply - sensing after the on/off switch