Home » Blog » Page 200

Make this Simple Buzzer Circuit with Transistor and Piezo

In this article we learn how to make a very simple circuit for buzzer using piezo electric transducer, two resistors, a small coil and a BC547 transistor. Simple Buzzer using a Single Transistor Just a single transistor, a ferrite inductor, and a piezo transducer, that’s all you will need to make this circuit “buzz” or … Read moreMake this Simple Buzzer Circuit with Transistor and Piezo

10 Automatic Emergency Light Circuits

The article describes a 10 simple automatic emergency light circuits using high bright LEDs. This circuit can be used during power failures and outdoors where any other source of power might be unavailable. The circuit uses LEDs instead of incandescent lamp, thus making the unit very power efficient and brighter with its light output. Moreover, … Read more10 Automatic Emergency Light Circuits

Automatic Vehicle Headlight Dipper/Dimmer Circuit

The circuit described here can be built and used in your vehicle for an automatic dipping and dimming operation of the vehicle headlamps, in response to the intense lights coming from an opposite vehicle headlamps.  Why an Automatic Headlight Dimmer/Dipper is so Important in Vehicles You must have come across this irritating situation while driving at night … Read moreAutomatic Vehicle Headlight Dipper/Dimmer Circuit

How to Use LM317 for Making a Variable Power Supply Circuit

In this post we will elaborately discuss how to build a simple LM317 based adjustable power supply circuit using minimum number of external components. Introduction Whether it’s an electronic noob or an expert professional, an adjustable power supply unit is required by everybody in the field. It is the basic source of power that may … Read moreHow to Use LM317 for Making a Variable Power Supply Circuit

How to Hook Up a Solar Panel System – Living of the Grid

In thi post we learn how to connect and integrate readymade solar panel system with our home, without depending on technical personnel or experts. The main gadgets required for implementing this are: a solar panel, a solar controller, battery and an inverter Introduction It’s been there since the earth was born and it is here … Read moreHow to Hook Up a Solar Panel System – Living of the Grid