USB 5V to 1.5V/ 3V Step Down Converter Circuit
See USB 5V to 1.5V/3V Step Down Converter Circuit using LM317. With this, we can use MP3 players (requires only 1.5V AA battery) with USB(5V). Read more
CD4047 Astable multivibrator circuit
Learn how use CD4047 CMOS datasheet as astable multivibrator circuits. Test example circuits, Basic square wave generator, and blinking two LED circuits. Read more
How analog and digital difference in electronics
Do you know analog and digital difference? What are they? Both the words such as any audio or video is transformed into electrical signals. Why use them? Read more
Simple transformerless power supply circuits
Learn these transformerless power supply circuits, use a capacitor instead, it smaller and lighter than transformer. There are circuits as follows. Read more
How many amps & hours to charging a battery be full
We probably used to use lead-acid batteries. But do you understand how to basic charge it yet? Let’s learn. Read more