CD4066 / 74HC4066 Quad Analog Switch CMOS circuits

CD4066 / 74HC4066 Quad Analog Switch CMOS circuits

When it came to the analog switches in a digital circuit, most people thought of the CD4066 or 74HC4066, as both utilized a silicon gate CMOS technology to drive their high-speed quad logic gates that are controlled by an external logic signal. CD4066 / 74HC4066 Features Inside of the 74HC4066, or 4066 in general, are … Read more

Small Automatic Plant Watering with a Solar Cell Power System

Small Automatic Plant Watering with a Solar Cell Power 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

simple solar-powered 12v water pump

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 Pump Protection Circuit using TL431

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 … Read more

Simple Speaker Turn-on Delay Circuit

Simple Speaker Turn-on Delay

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