Скачать или смотреть How to Build a Symmetrical ±15V Power Supply Using 7815 & 7915 Regulators in Proteus

This video demonstrates a symmetrical dual-polarity power supply using 7815 (positive) and 7915 (negative) voltage regulators in Proteus Software. The circuit generates ±15.1V outputs from a single AC input, ideal for applications like op-amp circuits, analog signal processing, and audio amplifiers.

Key Features:

Transformer & Bridge Rectifier: Steps down 220V AC to a lower AC voltage and converts it to pulsating DC.
7815 Regulator: Stabilizes the positive output to +15V.
7915 Regulator: Stabilizes the negative output to -15V.
Filter Capacitors (2200µF, 100nF): Reduce ripple voltage and stabilize output.
Output Meters: Real-time visualization of both ±15V outputs in Proteus.
How It Works:

AC-to-DC Conversion:
The transformer steps down 220V AC → 12V AC.
The bridge rectifier converts AC to pulsating DC.
Voltage Stabilization:
The 7815 regulator stabilizes its output to +15V.
The 7915 regulator stabilizes its output to -15V.
Ripple Filtering:
Input capacitors (2200µF) smooth pulsating DC.
Output capacitors (100nF) eliminate residual ripple.
What you’ll learn:

How to create symmetric ±V outputs from a single AC source.
Role of capacitors in filtering and stabilizing voltage.
Importance of dual-polarity power supplies in analog circuits.
Simulating real-world circuits in Proteus.
⚠️ Safety Note: Always use isolation transformers and follow safety protocols when working with high-voltage loads.

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