Do capacitors increase the voltage level ?
Capacitors, by their nature, do not increase the voltage level in a circuit. Instead, they store electrical energy in the form of an electric field between their plates. When a…
Category: Electronics
Is capacitor an active or passive device ?
A capacitor is considered a passive device in electronics. Passive devices are those that do not require an external power source to function but rather respond to applied voltages or…
What is the difference among LDR photo resistor and photodiode ?
The primary difference among an LDR (Light Dependent Resistor), a photoresistor, and a photodiode lies in their operating principles and response characteristics. An LDR or photoresistor changes its resistance based…
What if transistors could have 3 states ?
Transistors typically operate in two main states: cutoff and saturation. In cutoff, the transistor does not conduct current between its collector and emitter terminals, acting like an open switch. In…
Why is photo diode reverse bias while LED is forward bias ?
A photodiode is reverse biased while an LED is forward biased due to their different functions and operating principles. A photodiode is designed to detect light, and reverse biasing it…
How to choose a MOSFET ?
Choosing the right MOSFET involves considering several key factors to ensure it meets the requirements of the circuit or application: Firstly, voltage ratings are critical. You need to select a…
What is the difference between NPN and PNP proximity sensors ?
The difference between NPN and PNP proximity sensors lies in their output configuration and electrical wiring. NPN proximity sensors have their output transistor connected to the negative supply voltage (grounded),…
What are NPN and PNP diodes How do they work ?
Diodes are semiconductor devices that allow current to flow in one direction only. NPN (Negative-Positive-Negative) and PNP (Positive-Negative-Positive) are types of bipolar junction transistors (BJTs), not diodes. NPN and PNP…
Whats the difference between JFET and MOSFET ?
The main difference between a JFET (Junction Field-Effect Transistor) and a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) lies in their construction and operation principles. JFETs are typically constructed from a single piece…
What purpose does a solenoidal vector field serve ?
A solenoidal vector field, also known as a divergence-free vector field, plays a crucial role in physics and engineering, particularly in fields like fluid dynamics and electromagnetism. It describes a…