Wireless current detector circuit diagram
🔌 Wireless Current Detector Circuit Diagram In this post, we’ll discuss a simple wireless current detector circuit that can detect the presence of current without any direct electrical connection . This circuit is quite useful for household or industrial electronic applications and DIY projects. ⚙️ Circuit Overview This circuit uses three BC547 NPN transistors (Q1, Q2, and Q3) . Together, these transistors form a high-gain detection system that senses the surrounding electric or magnetic field created by a live wire. When current flows through a wire, it generates a weak electromagnetic field around it — this circuit captures that field and lights up an LED indicator, showing that current is present. 🧩 Components Used Component Value / Type Description Q1, Q2, Q3 BC547 NPN Transistor Used for signal amplification R1 1 MΩ High resistance for input sensitivity R2 100 kΩ Signal boosting resistor R3 220 Ω LED current-limiting resistor D1 LED Indi...