Questions tagged [active-components]
Components which provide a gain in the circuit where they are applied. Typical examples are transistors and op-amps.
36 questions
4 votes
3 answers
350 views
What is the difference between a source and an active component?
I am having trouble forming a clear definition for a source component versus an active component. From my understanding, an active component is one which can supply power to a circuit, but may also ...
- 157
0 votes
1 answer
102 views
How to interpolate three points using a circuit?
Interpolating two points to create a circuit which will do what you want is easy, Suppose we have a input voltage Vin and a variable resistor and we want when the resistance of the variable resistor ...
- 498
3 votes
0 answers
103 views
Active load and current source purpose on NE5532
I'm trying to do some reverse engineering on the NE5532 schematic, but I can't understand how is designed the current source for the first stage. What I want to analyze now is in yellow on the picture....
- 369
0 votes
0 answers
369 views
Capacitors and batteries as active/passive components
I'm trying to better understand the concept of active and passive components, mainly with respect to capacitors and batteries. I found that - according to Wikipedia - there are two definitions of ...
- 194
5 votes
8 answers
3k views
Is a transistor truly an amplifier?
My understanding of transistor is that in it a tiny current controls a huge current. I get that concept. If that is the case, it is not amplifying anything in my opinion. Sure it does dictate when ...
- 271
0 votes
1 answer
513 views
PLCC4 footprint how to connect LED
I am confused as to how I should be connecting this design since this LED LTW-E670DS since it has 4 pins. How do I connect it? Pin 2 is Anode and 1 Cathode but 3 and 4?
- 45
0 votes
0 answers
108 views
Why does moving this ammeter change the polarity of the applied voltage?
Note: I'm not an electrical engineer, I'm a materials engineer. So maybe this question has an obvious answer, but I couldn't find one with a Google search. I also have no idea if I tagged this ...
- 145
3 votes
1 answer
740 views
Why isn't this active rectifier circuit working?
I built the following active rectifier schematic on a breadboard, and inputted a 15 KHz 1V peak to peak sine wave from my signal generator. The output looked like a sine wave and I have no idea why. ...
- 141