Many electronic things need clean DC power to work good. This post show how to make one easy Simple Adjustable Power Supply Circuit. It changes dirty DC power to clean power and it uses one chip called LM338. This circuit take DC from 5 to 34 volt and gives clean DC from 1.25 to 30 […]
Simple MIC Preamplifier Circuit
This is small and Simple MIC Preamplifier Circuit using an op-amp IC LM358 It uses op-amp to make weak sound from MIC more strong. It is good to record voice or connect to speaker. This circuit is easy to make with not many parts needed. Also it have one knob to control how much it […]
Simple Wireless Power Transmission Circuit
Wireless power is not a new idea long time ago even Nikola Tesla try this! Now many things like phone, toothbrush and some medical stuff charge without wire. But still we can make it better. In this post we will show how to make a easy Simple Wireless Power Transmission Circuit with transmitter and receiver […]
Wireless LED Light Circuit
Nowadays there are wireless charging inside many things like phone and even big medical machines. In this article we will show how to make Wireless LED Light Circuit which light using one small chip called IC 555. No wire needed the LED will light up to show how wireless charging works. What is a Wireless […]
Red Blue Police Light Flasher Circuit
This article show how to make a Red Blue Police Light Flasher Circuit. It uses two IC 555 chips which are very common. Each chip run at different speed. They connect to two LED groups in special way in like opposite direction. This make LEDs blink one after other and back and forth and with […]
Battery Voltage Level Indicator Circuit using 3 LED
Battery Voltage Level Indicator Circuit using 3 LED is small circuit to show battery voltage with 3 LED One LED for low, one for medium and one for full charge. It helps to know battery is good or need charging. This circuit is easy to make and can be used for 12V battery but with […]