Constant current circuit using transistors
Learning experiments with simple constant current circuit using transistors, a few plain parts, so helpful, especially Ni-HM battery charger. Read more
3.7V to 5V Boost/Step-up DC converter circuit using MC34063
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
1.5V/3V Step down switching regulator(5V input) using KA34063
It is a 1.5V Step down Switching regulator using KA34063/MC34063. Imagine you have an old MP3 player it needs a 1.5V battery. But you only have the power bank, USB port 5V output. Sure, it doesn’t work. Therefore, this circuit is a good solution. Read more
Gel cell battery charger circuit
It can charge any size of the Gel cell batteries and extend the life of the Gel Cell battery. While the circuit is running, the LED indicates charging. Read more
Simple Coin Toss Game circuits diagram
This is a simple coin toss game circuit with a time delay. It is a type of simple electronic game that simulates a real coin toss with LEDs. You could build it in your free time to play and enjoy with others. The circuit has been improved from an old coin-toss circuit to make it … Read more