Circuits Simple Electronics Project with PNP Transistor (Dual LED Blinker Circuit) By Creative Creator - February 19, 2024 0 Simple Electronics Project with PNP Transistor (Dual LED Blinker Circuit) FacebookTwitterReddItWhatsAppEmail Here is the schematics for Dual LED Blinker Circuit. Used Components: BC557 PNP Transistor 220UF, 25V Capacitor 6.8k Resisotor SMD LED from old COB light 3.7v to 5V Power Supply