⚡ CORE ECE PROJECTS (POWER, SIGNALS & ELECTRONICS)

All projects are component-centric (not board-centric), built using transformers, MOSFETs, BJTs, inductors, op-amps, ICs, relays, LEDs, etc.

🔋 POWER ELECTRONICS & CONVERTERS

Single Phase AC to DC Controlled Rectifier
Controls output DC voltage using SCR firing angle.
Components: Transformer, SCR, firing circuit.
DC–DC Buck Converter Using MOSFET
Steps down DC voltage using PWM control.
Components: MOSFET, inductor, diode, PWM IC.
Boost Converter for Renewable Applications
Steps up low DC voltage efficiently.
Components: MOSFET, inductor, diode, control IC.
Buck–Boost Converter with Feedback Control
Provides regulated output above or below input voltage.
Components: MOSFET, inductor, op-amp feedback.
Single Phase PWM Inverter
Converts DC to AC using MOSFET H-bridge.
Components: MOSFETs, gate driver, transformer.
SPWM Inverter Using IC 555 / Op-Amp
Generates sinusoidal PWM for inverter control.
Components: 555, op-amp, MOSFETs.
Zener Regulated Power Supply
Maintains constant output voltage under load variation.
Components: Transformer, rectifier, zener diode.
Linear Regulated Power Supply Using IC 78xx
Provides stable DC voltage for electronics.
Components: Transformer, IC regulator.
Switch Mode Power Supply (SMPS) Prototype
High efficiency power conversion using switching.
Components: MOSFET, transformer, controller IC.
Soft Start Circuit for Power Supplies
Reduces inrush current during startup.
Components: MOSFET, RC network.

DC Motor Speed Control Using MOSFET PWM
Controls motor speed efficiently using duty cycle variation.
Components: MOSFET, PWM generator.
H-Bridge Motor Driver Circuit
Enables bidirectional motor control.
Components: MOSFETs / BJTs, diodes.
Relay-Based Motor Direction Control
Simple motor forward–reverse control.
Components: Relays, transistors.
Stepper Motor Driver Using Transistors
Controls stepper motor phase sequencing.
Components: BJTs, diodes.
Induction Motor Starter with Protection
Protects motor from overload and faults.
Components: Relays, current sensors.

Active Low Pass Filter Using Op-Amps
Removes high-frequency noise from signals.
Components: Op-amp, resistors, capacitors.
Active High Pass Filter for Audio Signals
Blocks low-frequency noise.
Components: Op-amp RC network.
Band Pass Filter for Communication Signals
Selects specific frequency band.
Components: Op-amp, RC components.
Instrumentation Amplifier for Weak Signals
Amplifies low-level sensor signals accurately.
Components: Multiple op-amps.
Signal Attenuator & Amplifier Module
Adjusts signal amplitude as required.
Components: Op-amp, potentiometer.

Audio Power Amplifier Using IC 741 / LM386
Drives speaker with amplified audio.
Components: Op-amp, speaker.
Tone Generator Using IC 555
Generates square wave audio tones.
Components: 555 timer, RC network.
Function Generator (Sine, Square, Triangle)
Generates multiple waveforms.
Components: Op-amps, diodes.
Audio Mixer Circuit Using Op-Amps
Mixes multiple audio inputs.
Components: Op-amps, resistors.
VU Meter Using LEDs & Op-Amps
Displays audio signal intensity visually.
Components: Op-amp, LEDs.

Digital Frequency Counter
Measures frequency of input signal.
Components: Counters, logic ICs.
PWM Generator Using IC 555
Generates adjustable duty cycle PWM.
Components: 555 timer.
Digital Voltmeter Using ADC IC
Displays voltage digitally.
Components: ADC, display IC.
Logic Analyzer Prototype
Analyzes digital signals.
Components: Logic ICs, LEDs.
Relay Logic Control System
Implements logic using relays.
Components: Relays, switches.

Overvoltage Protection Circuit
Disconnects load during voltage surge.
Components: Op-amp, relay.
Overcurrent Protection Using Shunt & Op-Amp
Detects abnormal current flow.
Components: Shunt resistor, op-amp.
Earth Leakage Detection Circuit
Detects leakage currents in power lines.
Components: CT, op-amp.
Surge Protection Circuit
Protects circuits from spikes.
Components: MOV, TVS diode.
Short Circuit Protection Module
Instantly cuts supply during fault.
Components: MOSFET, sensing circuit.

Transformer Health Monitoring Circuit
Monitors temperature and load.
Components: Transformer, sensors.
High-Frequency Transformer Design Study
Analyzes transformer behavior at high frequency.
Components: Ferrite core transformer.
Inductor Current Ripple Measurement
Studies ripple current in converters.
Components: Inductor, oscilloscope.
Power Factor Measurement Circuit
Measures phase difference between voltage & current.
Components: Op-amp, zero-cross detectors.
Power Factor Correction Circuit
Improves power factor using capacitors.
Components: Capacitors, inductors.

Closed Loop Voltage Control System
Maintains output voltage using feedback.
Components: Op-amp, power stage.
PID Controller Using Analog Circuits
Implements control theory using op-amps.
Components: Op-amps, RC networks.
Analog Servo Control System
Controls position using feedback loop.
Components: Op-amps, motor.
Phase Locked Loop (PLL) System
Synchronizes output frequency with reference.
Components: PLL IC.
Zero Crossing Detector Circuit
Detects AC waveform zero crossing.
Components: Op-amp comparator.

LED Driver Circuit Using Constant Current Source
Ensures uniform LED brightness.
Components: Op-amp, transistor.
High Power LED Driver Using Buck Converter
Efficiently drives power LEDs.
Components: MOSFET, inductor.
Seven Segment Display Driver Circuit
Drives numerical display.
Components: Decoder IC.
Relay Status Indication System
Displays relay states visually.
Components: LEDs, transistors.
Analog Panel Meter Interface Circuit
Interfaces analog meters with modern circuits.
Components: Op-amp, meter.