CD4066 / 74HC4066 Quad Analog Switch CMOS circuits
How to use CD4066 or 74HC4066 CMOS ICs Datasheet, pinout, as high-speed quad analog switches are controlled by an external logic signal. Read more
Controls & Timers
All controller, motor speed driver,switches,timer,sensor,and more : Timer switches • DC motor speed control • Delay timers • Light switchs • SCR controls • Light dimmers • Infrared remote control system • and more…
Solar Powered Automatic Plant Watering System
This circuit consists mainly of the following components: a solar cell, a DC pump, a 555 timer, and an LM311 comparator. It worked well and was also very efficient, requiring only power from the solar cell rather than a battery. Read more
Simple Solar-Powered 12V Water Pump Circuit with Battery
A solar-powered water pump circuit for a place with no power outlet, with a battery. We’ll learn how to use a MOSFET instead of a relay, as well as the NE555 timer circuit. Read more
Simple DC Motor / Pump Protection Circuit
If we were to use a DC water pump without an AC outlet, most likely we would power it with a 12V lead-acid battery. It is quite convenient, although their life span will shorten drastically down to around two years. However, there are things that we can do to prevent this, which are also features of … Read more
Simple Speaker Turn-on Delay Circuit
Today we are going to introduce you to a Simple Speaker Turn-on delay Circuit. Imagine after you finish building your own OCL power amplifier circuit. But every time you turn it on, within the first 3 seconds, you hear a loud “tlub” sound from a speaker. Wouldn’t you feel annoyed by that sound? Apart from … Read more