How Astable Multivibrator or Logic Gate Oscillator Circuit Works
Learn how astable multivibrator using logic gates works in simple diagram. With example 5 oscillator circuits, NAND, NOR, Inverter, Not gates etcs Read more
Simple Condenser Mic Preamplifier Circuit
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
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
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
3V | 1.5V Switching Regulator circuit 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