# All Circuits and Electronics

Circuits Geek is a free resource online portal with tutorials on various concepts related to Electronics. Yon can also find various mini-projects and guides which you can try yourself. Use Advanced Search tool to search for the tutorial or projects you want to try out.

### Unijunction Transistor

The Unijunction Transistor or UJT for short, is another solid state three terminal device that can be used in gate pulse, timing circuits and trigger generator applications to switch and control either thyristors and

### Power in AC Circuits

In a DC circuit, the power consumed is simply the product of the DC voltage times the DC current, given in watts. However, for AC circuits with reactive components we

### BH1750 Ambient Light Sensor with Arduino

In this project, we will learn about the BH1750 Ambient Light Sensor Module and also how to interface a BH1750 Ambient Light Sensor with Arduino to obtain the ambient light

### Phasor Diagrams and Phasor Algebra

Sinusoidal waveforms of the same frequency can have a Phase Difference between themselves which represents the angular difference of the two sinusoidal waveforms. Also the terms “lead” and “lag” as

### Three Phase Transformers

Thus far we have looked at the construction and operation of the single-phase, two winding voltage transformer which can be used increase or decrease its secondary voltage with respect to

### Smart Dustbin using Arduino, Ultrasonic Sensor & Servo Motor

In this project, I will show you How to Make a Smart Dustbin using Arduino, where the lid of the dustbin will automatically open when you approach with trash. The

### The Inductor

In our tutorials about Electromagnetism we saw that when an electrical current flows through a wire conductor, a magnetic flux is developed around that conductor. This affect produces a relationship

### Resistors in Parallel

Unlike the previous series resistor circuit, in a parallel resistor network the circuit current can take more than one path as there are multiple paths for the current. Then parallel

### The D-type Flip Flop

One of the main disadvantages of the basic SR NAND Gate Bistable circuit is that the indeterminate input condition of SET = “0” and RESET = “0” is forbidden. This state will

### Power Supplies for Beginners, Part 1

Power Supplies for Beginners, Part 1 A Video Tutorial for Beginners – Getting set up to test, modify and use power supplies without spending a fortune. Watch our Part 1