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.

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🔋 POWER ELECTRONICS & CONVERTERS

1. Single Phase AC to DC Controlled Rectifier

Controls output DC voltage using SCR firing angle.

Components: Transformer, SCR, firing circuit.

2. DC–DC Buck Converter Using MOSFET

Steps down DC voltage using PWM control.

Components: MOSFET, inductor, diode, PWM IC.

3. Boost Converter for Renewable Applications

Steps up low DC voltage efficiently.

Components: MOSFET, inductor, diode, control IC.

4. Buck–Boost Converter with Feedback Control

Provides regulated output above or below input voltage.

Components: MOSFET, inductor, op-amp feedback.

5. Single Phase PWM Inverter

Converts DC to AC using MOSFET H-bridge.

Components: MOSFETs, gate driver, transformer.

6. SPWM Inverter Using IC 555 / Op-Amp

Generates sinusoidal PWM for inverter control.

Components: 555, op-amp, MOSFETs.

7. Zener Regulated Power Supply

Maintains constant output voltage under load variation.

Components: Transformer, rectifier, zener diode.

8. Linear Regulated Power Supply Using IC 78xx

Provides stable DC voltage for electronics.

Components: Transformer, IC regulator.

9. Switch Mode Power Supply (SMPS) Prototype

High efficiency power conversion using switching.

Components: MOSFET, transformer, controller IC.

10. Soft Start Circuit for Power Supplies

Reduces inrush current during startup.

Components: MOSFET, RC network.

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🔄 ELECTRICAL DRIVES & MOTOR CONTROL

11. DC Motor Speed Control Using MOSFET PWM

Controls motor speed efficiently using duty cycle variation.

Components: MOSFET, PWM generator.

12. H-Bridge Motor Driver Circuit

Enables bidirectional motor control.

Components: MOSFETs / BJTs, diodes.

13. Relay-Based Motor Direction Control

Simple motor forward–reverse control.

Components: Relays, transistors.

14. Stepper Motor Driver Using Transistors

Controls stepper motor phase sequencing.

Components: BJTs, diodes.

15. Induction Motor Starter with Protection

Protects motor from overload and faults.

Components: Relays, current sensors.

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📡 SIGNAL PROCESSING & ANALOG SYSTEMS

16. Active Low Pass Filter Using Op-Amps

Removes high-frequency noise from signals.

Components: Op-amp, resistors, capacitors.

17. Active High Pass Filter for Audio Signals

Blocks low-frequency noise.

Components: Op-amp RC network.

18. Band Pass Filter for Communication Signals

Selects specific frequency band.

Components: Op-amp, RC components.

19. Instrumentation Amplifier for Weak Signals

Amplifies low-level sensor signals accurately.

Components: Multiple op-amps.

20. Signal Attenuator & Amplifier Module

Adjusts signal amplitude as required.

Components: Op-amp, potentiometer.

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🔊 AUDIO & WAVEFORM GENERATION

21. Audio Power Amplifier Using IC 741 / LM386

Drives speaker with amplified audio.

Components: Op-amp, speaker.

22. Tone Generator Using IC 555

Generates square wave audio tones.

Components: 555 timer, RC network.

23. Function Generator (Sine, Square, Triangle)

Generates multiple waveforms.

Components: Op-amps, diodes.

24. Audio Mixer Circuit Using Op-Amps

Mixes multiple audio inputs.

Components: Op-amps, resistors.

25. VU Meter Using LEDs & Op-Amps

Displays audio signal intensity visually.

Components: Op-amp, LEDs.

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🔢 DIGITAL & LOGIC SYSTEMS

26. Digital Frequency Counter

Measures frequency of input signal.

Components: Counters, logic ICs.

27. PWM Generator Using IC 555

Generates adjustable duty cycle PWM.

Components: 555 timer.

28. Digital Voltmeter Using ADC IC

Displays voltage digitally.

Components: ADC, display IC.

29. Logic Analyzer Prototype

Analyzes digital signals.

Components: Logic ICs, LEDs.

30. Relay Logic Control System

Implements logic using relays.

Components: Relays, switches.

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🔥 PROTECTION & INDUSTRIAL ELECTRONICS

31. Overvoltage Protection Circuit

Disconnects load during voltage surge.

Components: Op-amp, relay.

32. Overcurrent Protection Using Shunt & Op-Amp

Detects abnormal current flow.

Components: Shunt resistor, op-amp.

33. Earth Leakage Detection Circuit

Detects leakage currents in power lines.

Components: CT, op-amp.

34. Surge Protection Circuit

Protects circuits from spikes.

Components: MOV, TVS diode.

35. Short Circuit Protection Module

Instantly cuts supply during fault.

Components: MOSFET, sensing circuit.

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🔄 TRANSFORMERS & MAGNETICS

36. Transformer Health Monitoring Circuit

Monitors temperature and load.

Components: Transformer, sensors.

37. High-Frequency Transformer Design Study

Analyzes transformer behavior at high frequency.

Components: Ferrite core transformer.

38. Inductor Current Ripple Measurement

Studies ripple current in converters.

Components: Inductor, oscilloscope.

39. Power Factor Measurement Circuit

Measures phase difference between voltage & current.

Components: Op-amp, zero-cross detectors.

40. Power Factor Correction Circuit

Improves power factor using capacitors.

Components: Capacitors, inductors.

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🧠 CONTROL & FEEDBACK SYSTEMS

41. Closed Loop Voltage Control System

Maintains output voltage using feedback.

Components: Op-amp, power stage.

42. PID Controller Using Analog Circuits

Implements control theory using op-amps.

Components: Op-amps, RC networks.

43. Analog Servo Control System

Controls position using feedback loop.

Components: Op-amps, motor.

44. Phase Locked Loop (PLL) System

Synchronizes output frequency with reference.

Components: PLL IC.

45. Zero Crossing Detector Circuit

Detects AC waveform zero crossing.

Components: Op-amp comparator.

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💡 DISPLAY & INDICATION SYSTEMS

46. LED Driver Circuit Using Constant Current Source

Ensures uniform LED brightness.

Components: Op-amp, transistor.

47. High Power LED Driver Using Buck Converter

Efficiently drives power LEDs.

Components: MOSFET, inductor.

48. Seven Segment Display Driver Circuit

Drives numerical display.

Components: Decoder IC.

49. Relay Status Indication System

Displays relay states visually.

Components: LEDs, transistors.

50. Analog Panel Meter Interface Circuit

Interfaces analog meters with modern circuits.

Components: Op-amp, meter.