# Automatic Street Light Dimmer Using Motion Sensor

“Save Energy For Future” one of the most common motto which we we’ve seen or heard throughout our life, Well, here we will be implementing it through this simple circuit. The power loss from street lights can be reduced to a large extent by implementing an automatic dimmer, which will reduce and increase the brightness automatically. This…

# Simple Wire Loop Alarm Circuit Schematics for Door Security

Home security alarm system is a big concern these days. Previously we had published some simple home security systems, the simple burglar alarm system and laser beam alarm circuit are some of them. In this tutorial we will explain how to make a simple wire loop alarm circuit schematics for door security using just four…

# Automatic Digital Visitor Counter Circuit Diagram Simple Electronics Hobby Project for Students

CircuitsGallery had posted many electronic circuit design projects suitable for School students as well as engineering students. Here we would like to demonstrate one of the hobby electronics projects called visitor counter project, it will be a simple electronics projects for school students. A digital visitor counter is necessary to count how many people entered…

# Simple Transistor Tester Circuit Diagram Using 555 Timer IC

Recently I received a comment from Mr. Simran, one of our reader regarding Home Security Alarm. He said he ran into some faults while setting up the circuit. I suggested that the problem is most probably due to troubles in transistor. After two days he replied back saying he has problem with transistor. Most of the electronics…

# PWM LED Dimmer/ Brightness Control by 555 Timer With Video Simulation

How to change the brightness of a LED? Whether led lights are dimmable? Is it possible to adjust the brightness of LEDs? LED is basically a diode, when the forward voltage exceeds 0.7 volt, it starts to glow, and if the forward voltage is less than 0.7 volt, it will be in the OFF state. What…

# Binary Up Counter Circuit with working animation and simulation video

Here we are going to discuss about an Asynchronous 4 Bit Binary Up Counter, a circuit made up of several J-K flip-flops cascaded to generate four bits counting sequence. An up counter is basically a digital counting circuit which counts up in an incremental mode. Here we have given the simple counting circuit setup using…

# Low Pass Filter/Integrator Circuit Using Op amp 741

Here we are opening the door to a very wide range of useful and exciting application of the opamp. Here we are discussing an opamp RC circuit named as opamp integrator circuit. This circuit simply performs the integration of the input waveform.The integrator output voltage Vo can be expressed as where K is the constant…

# Ring Counter Circuit Working Principle with Animation and Video

Digital counters have several applications in electronics circuits. Counters in digital electronics are used at different situations. Here we are going to deliver the idea of a Ring counter circuit, which is a register counter. Working animation and circuit simulation video of ring counter are also given along with this article. A ring counter is formed…