Wednesday, 30 April 2025

What does a capacitor store?

A capacitor stores charge (option 02). 
To explain in more detail, a capacitor is an electronic component that temporarily stores electrical energy in the form of an electric charge. It consists of two conductive plates separated by an insulating material called a dielectric. When a voltage is applied across the plates, positive and negative charges accumulate on the opposite plates, creating an electric field between them. This stored charge can be released when needed, making capacitors useful in various applications like filtering signals, smoothing power supplies, or storing energy for quick bursts.

- Current (01): Capacitors don't store current; current is the flow of charge, and capacitors store the charge itself, not its movement.
- Voltage (03): While capacitors have a voltage across their plates when charged, they don't store voltage—they store charge, and the voltage is a result of that charge (related by the equation ( V = Q/C ), where ( Q ) is charge and ( C ) is capacitance).
- Power (04): Power is the rate of energy transfer, not what capacitors store. They store energy in the form of charge, which can be converted to power when discharged.

The capacitor in the image is 3.15 µF (microfarads) with a voltage rating of 440 VAC, commonly used in applications like motor circuits or power factor correction.

Monday, 21 April 2025

Solar Power System Each Component Explained

Here's a detailed explanation of each component in a solar power system:

1. Solar Panel: Captures sunlight and converts it into DC electricity using photovoltaic cells. It's the primary energy source, producing power based on sunlight intensity.

2. DC-DB Box: Distributes DC electricity safely, housing fuses and circuit breakers to protect the system from electrical faults.

3. MPPT: Optimizes solar panel output by adjusting to the maximum power point, boosting efficiency by 20-30%.

4. Inverter: Converts DC electricity to AC, making it usable for household appliances like lights and TVs.

5. Battery: Stores excess electricity for use when sunlight is unavailable, ensuring a continuous power supply.

6. Load: Represents devices consuming electricity, such as fridges or chargers, determining system capacity needs.

Regulated Power Supply Block Diagram