Automatic temperature control is essential in many DIY and real-world applications — from automotive heating and battery warmers to incubators and frost protection systems. In this guide, we’ll explore a temperature controlled heater circuit built around an LM358 dual op-amp,…
The NE555 timer IC is famous for its flexibility, and one of its most useful applications is PWM dimming. The circuit shown here is a 12V LED dimmer built around a 555 timer that produces pulse-width modulation (PWM) to control…
When power is connected, the timer automatically turns ON, stays active for a set amount of time, and then turns OFF by itself. Circuit Working — 555 Timer Power-On Delay This circuit uses a 555 timer IC to create a…
Below is the circuit diagram of a microphone audio amplifier using LM386 ic. This circuit amplify weak audio signal from an electret microphone and drive a small 4/8 ohm speaker or can be used as a pre-amplifier stage of an…
A detailed step by step guide to design a good power supply for your DIY electronic projects. The most important thing you need to consider while designing a power supply for your DIY Arduino project is the current and voltage…