BD243 MINI Tesla Coil DIY Kit

The BD243 MINI Tesla Coil DIY Kit is an educational electronics kit designed to demonstrate high-frequency oscillation, electromagnetic induction and wireless power transfer. It uses a BD243/BD243C transistor, a wound secondary coil and a simple oscillator circuit to generate a high-frequency electric field. When assembled correctly, the coil can illuminate small fluorescent or neon lamps wirelessly when brought near the coil. The kit is suitable for electronics learning, science demonstrations and DIY experimentation. Basic soldering is required for assembly.

Technical Specifications:

• Input Voltage: 9–12V DC for this common BD243 mini-kit version
• Main Transistor: BD243 / BD243C NPN transistor
• PCB Size: Approx. 40 × 31 mm
• Main Components: PCB, Tesla coil, transistor, heatsink, switch, DC socket, capacitors, resistors and LEDs
• Circuit Type: Single-transistor high-frequency Tesla coil / resonant oscillator

Features:

• Demonstrates wireless energy transmission
• Can illuminate nearby fluorescent, neon or suitable LED lamps without direct wiring
• Compact DIY design suitable for desktop experiments
• Includes heatsink for the power transistor
• Useful for learning resonance, induction and high-frequency electronics

Applications:

• School and college science experiments
• Electronics and soldering practice
• Wireless power-transfer demonstrations
• Electromagnetic induction and resonance experiments
• DIY hobby, STEM and educational electronics projects