Posts by Fariha Zahid

Today we are going to demonstrate one of the easiest heat or temperature sensor alarms. The most interesting feature of this circuit is that…

In this tutorial, we are making a project of 6V & 12V Battery Charger With an Auto Battery Detect Function. Usually, charger circuits have a…

In this circuit, we are making a project of a water alarm circuit using 555 IC. It will produce a sound alarming you when the water reaches…

In this tutorial, we are making an automatic plant watering/irrigation control circuit. This circuit is used for automatically water your pl…

Here is another interesting project of Power supply. This is a circuit of a 1.2V to 25V/3A Variable Power Supply Using LM350. This IC is an…

In this tutorial, we are making a 4 LED Battery Monitor Using Two LM358 ICs. This circuit is inexpensive and can monitor the battery voltage…

Here we are going to demonstrate a simpler version of a temperature-controlled DC fan. You can control any 12 volts 1A DC fan with this circ…

In this tutorial, we are making a project on a Temperature alarm circuit. This circuit activates a buzzer alarm when it receives or senses h…

In this circuit, we are making an Adjustable Low Battery Cutoff For All Rechargeable Batteries. Battery charging always has an issue of them…

In this tutorial, we are making a project of a Simple temperature sensor circuit. This circuit activates an LED when it senses or receives h…

In this tutorial, we are making an efficient and useful project of heat sensor with LM741 IC. It activates a relay switch on the level that…

Here is a circuit of a Battery Monitor using the LM339 IC. Battery monitors are useful circuits that help in saving your batteries from deep…

In this tutorial, we are making a project on a Cold sensor switch. This circuit is very sensitive and can easily be used to sense cold or lo…