Existing frost free double door refrigerators function with the help of defrost timer and defrost heater for automatic defrosting. The objective of my circuit is to convert the existing refrigerator to one, without freezer (freezerless) Written and Submitted By: Subramanian. C.N. My circuit modifies the existing circuit of my refrigerator, by replacing the existing defrost […]
Explained
12 Simple IC 4093 Circuits and Projects Explained
The 4093 is a 14-pin package containing four positive-logic, 2-input NAND Schmitt trigger gates as shown in the following figure. It is possible to operate the four NAND gates separately or collectively. The individual logic gates of the IC 4093 works in the following manner. As you can see each gate has two inputs (A […]
Light Emitting Diodes (LED) Explained
The full form of LED is Light Emitting Diode. LEDs are special type of semiconductor diodes which emit light in response to a potential difference applied across their terminals, hence the name light emitting diode. Just like a normal diode LEDs also have two terminals with polarity, namely anode and cathode. To illuminate an LED […]
Simple Electronic Dog Whistle Circuit Explained
An electronic dog whistle is a device that generates ultrasonic sound waves and is used for training dogs and for controlling excessive barking habit. Because dogs and domestic cats can hear ultrasonic frequencies, humans cannot, this dog whistle device is employed to train these animals. It is also sometimes known as a silent whistle or […]
What are the Different Types of Transformers? Explained
In this post I am going to explain different types of electrical transformers that are used in a wide variety of applications. Transformers can be classified in many different ways, for example: based on their input / output character, voltage, frequency, application, power handling capacity etc. In this post we will be exploring all the […]
Different Types of UPS systems – Explained
In this post I am going to explain different types of uninterruptible power supply (UPS) that are available in the market and how they are classified according to the consumer’s requirement. We will also explore the different types of UPS’s block diagram to understand their technical difference between them. UPS systems are a type of […]