Using only an ultra-bright white LED, red blinking LED, PNP transistor, and a diode, the circuit gives a strong visual indication of current consumption by blinking brighter and more frequently as ...

This is a simple flashing led circuit with 2 leds and 2 NPN transistors. It illustrates the behavior of transistors and capacitors and if you use an oscilloscope it will be very easy to determine what ...

The flashing LED works as an oscillator and switches the transistor on and off ... then 12 V will supply seven; alternatively, use six yellow (2.1 V each) or five green (2.7 V). You can of course ...

The ubiquitous LED continues to expand frontiers and applications with a plethora of sizes, colors, and output lumens. Flashing LEDs that incorporate internal electronics for oscillation offer ...

We must admit that we’ve been guilty of using a microcontroller to make two LEDs blink alternately in the ... All it takes is a pair of NPN transistors, which are then switched by on and off ...