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