Power Supply Basics
[vc_row][vc_column width="2/3"][vc_column_text]Parts of a Power Supply A DC Power Supply Unit (commonly called a PSU) deriving power from the AC mains (line) supply performs a number of tasks: It changes…
Types Of Lamps
[vc_row][vc_column width="2/3"][vc_column_text]Energy conservation is becoming more and more of a concern. One solution is to use more energy efficient bulbs at home, schools, businesses and public places. Key Terms: Watt…
Semiconductors
[vc_row][vc_column width="2/3"][vc_column_text] Atomic Structure of Matter Matter is anything that occupies space and has weight. It may exist in any one of three states: solid, liquid or gas. Matter includes…
Power Supplies
[vc_row][vc_column width="2/3"][vc_column_text] In a basic power supply the input power transformer has its primary winding connected to the mains (line) supply. A secondary winding, electro-magnetically coupled but electrically isolated from…
Corona
[vc_row][vc_column width="2/3"][vc_column_text] Contents Introduction Theory of corona formation Factors Affecting Corona Advantages And Disadvantages Of Corona Methods Of Reducing Corona Effect Introduction When an alternating potential difference is applied across…
Potentiometers & Variable Resistors
[vc_row][vc_column width="2/3"][vc_column_text] Figure 1.Potentiometer Construction Resistive Controls Controls that produce a varying voltage using resistance are called either potentiometers or variable resistors. Although both types of control may be physically…
Oscillator (Working)
[vc_row][vc_column width="2/3"][vc_column_text] Parts of an Oscillator Most oscillators consist of three basic parts: Figure 1.The Essential Elements of an Oscillator An amplifier. This will usually be a voltage amplifier and…
Oscillator And Its Types
[vc_row][vc_column width="2/3"][vc_column_text] What is an Oscillator? Figure 1.Oscillator (AC Source) Circuit Symbol An oscillator provides a source of repetitive A.C. signal across its output terminals without needing any input (except…
Number Systems
[vc_row][vc_column width="2/3"][vc_column_text] Why so many Number Systems? Ask many people what the most commonly used number system is, and they would probably reply (after a bit of thought), the decimal…
Logarithmic & Linear Controls of Potentiometer
[vc_row][vc_column width="2/3"][vc_column_text] Two Types of Track Two types of potentiometers with different tracks are available. These are Linear (Lin) or Logarithmic (Log) tracks. Figure 1.Logarithmic and Linear Variation With linear…