ECE Lab Kit 24 Audio Amplifier Design Lab
ECE Lab Kit 24 Audio Amplifier Design Lab — Compare Efficiency and Distortion Across Class A, B & AB
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This lab kit puts the theory of power amplifiers into practice. You’ll build Class A, Class B, and Class AB audio amplifiers on a single breadboard, inject an audio signal, and measure how each converts DC power into sound — observing crossover distortion, efficiency limits, and heat dissipation in real time. Perfect for ECE lab sessions or a deep-dive project on analog electronics.
What You'll Build
A working audio amplifier system that lets you switch between three fundamental topologies. You’ll wire discrete transistor circuits for Class A (single-ended with constant bias current), a push-pull Class B pair, and a diode-biased Class AB that eliminates crossover distortion. The kit includes an 8-ohm speaker and dual power supply so you can hear the sonic differences and record current draw to calculate true efficiency under load.
What You'll Learn
- Designing and biasing a Class A transistor amplifier for linear operation.
- Building a complementary push-pull Class B stage and identifying crossover distortion on an oscilloscope.
- Adding diode biasing to convert Class B to Class AB and quantifying the reduction in THD.
- Measuring amplifier efficiency (power out vs. DC power in) at different signal levels for each class.
Kit Contents
| Component | Quantity |
|---|---|
| BC547 Transistors | 10 |
| BC557 Transistors | 10 |
| TIP31C NPN | 2 |
| TIP32C PNP | 2 |
| 10kΩ Resistors | 20 |
| 1kΩ Resistors | 10 |
| 100µF Caps | 5 |
| Speaker 8Ω | 1 |
| Half Breadboard | 1 |
| Dual PSU | 1 |
| M-M Wires | 30 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Ideal for B.Tech ECE/EEE students tackling analog electronics lab courses (VTU, AKTU, Anna University, and autonomous colleges) who need to demonstrate Class A, B, and AB amplifier performance. Also used by CBSE Class 12 students exploring transistor amplifiers for physics projects, and by ATL Tinkering Labs running workshops on audio electronics. If you’re preparing for Smart India Hackathon hardware challenge or just want to deeply understand audio power amps, this kit gives you the exact breadboard experiment.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We’ve spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Our AI build companion walks you through every connection, and our WhatsApp support responds within hours. Scan the QR code, describe your issue, and you’ll get debugging steps specific to this amplifier lab.
Can I measure efficiency and distortion without an oscilloscope?
Yes — the AI companion shows you how to use the dual PSU’s current display and a smartphone audio spectrum app to estimate efficiency and observe crossover distortion qualitatively. For precise THD numbers, a basic DSO is recommended, but the learning can be done with the tools in the kit.
Is this kit aligned with university ECE lab curricula?
Absolutely. The experiment sequence mirrors the “Power Amplifiers” lab session in most Indian universities including VTU (15ECL38), AKTU (KEC-351), and Anna University (EC8461). You can submit readings and waveforms directly from your build log.
Does the kit include a signal source to test the amplifiers?
The kit relies on an external audio source — any smartphone with a 3.5 mm jack or a function generator app works perfectly. The AI companion guides you through connecting the line-out to the amplifier input using the breadboard wires.
Class A, Class B and Class AB audio amplifier circuits built on breadboard — compare efficiency and distortion.
What's in this kit
- BC547 Transistors x10
- BC557 Transistors x10
- TIP31C NPN x2
- TIP32C PNP x2
- 10kΩ Resistors x20
- 1kΩ Resistors x10
- 100µF Caps x5
- Speaker 8Ω
- Half Breadboard
- Dual PSU
- M-M Wires x30
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items