Simplest Automatic Solar Light from Water Bottle
This is simplest automatic solar led light circuit that my son try to make it for basic small solar charger. to use 2 x AA NI-MH battery total 2.4V
The 1.5v led flashlight circuit which also use single AA 1.5V battery. But few parts. Such as we use one transistor only. And all other parts of 5 pcs only [...]
This is first mini emergency light of my son. It is very small, use LED display when power outage,use transistor instead relay use AA battery charger.
We will add beauty to CAR brake light circuit. With a display of 14 LEDs, visible clearly, for safety and beautiful. The installation format can fix by oneself as you like it.
When we use the bicycle(normal bike) at night. we used IC1 IC555 Oscillator signal is output to a lot LED super bright.
This is a simple LED music light circuit. Music can change the LED light level gamut. Operation of this circuit is a circuit OP-AMP IC1-LM318-Single High-Speed Operational Amplifier / 1-IC1…
These circuits are simple One LED flashers that use transistors as the main (first circuit), the transistor UJT (second circuit) and IC Op amps (the Third), Read more below. Using…