Simple two-transistor circuit lights LEDs

https://www.electronics-lab.com/simple-two-transistor-circuit-lights-leds/

Barry Tigner @ edn.com has a design idea on how to power a LED from a 1.5V battery using two easily available transistors. A previous Design Idea describes a circuit that uses an astable multivibrator to drive an LED (Reference 1). The circuit in Figure 1 uses a simpler alternative approach. The circuit uses a […]