This is a simple 1.2V AA battery Solar charger circuit. Imagine, if you want to charge only one or two 1.2V AA Ni-MH batteries, and must be charged outdoor without home electricity. What could we do? If what you have are plain components. Is it possible to use those components? to create a circuit according … Read more
Learn how astable multivibrator using logic gates works in simple diagram. With example 5 oscillator circuits, NAND, NOR, Inverter, Not gates etcs Read more
This is simple condenser mic preamp circuit using 2N3904, The mic bring to change the sound to electrical signals. it is simple circuit and use 9V battery Read more
Learning experiments with simple constant current circuit using transistors, a few plain parts, so helpful, especially Ni-HM battery charger. Read more
Here is 3.7V to 5V boost converter or step up switching circuit using MC34063 and a few parts,1N5819,100uH. For 200mA-300mA of load current. Read more