Abbreviations used in electronics.
![Atom Energy Levels Shells](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNzQiIGhlaWdodD0iNDAwIiB2aWV3Qm94PSIwIDAgMjc0IDQwMCI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
Each discrete distance orbit from the nucleus corresponds to a certain energy level. The electron which rotates in the lowest
![Conduction Material Band](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyODgiIGhlaWdodD0iNDAyIiB2aWV3Qm94PSIwIDAgMjg4IDQwMiI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
When no of atoms is combining then the whole energy levels are dividing in sub energy levels and become overlapped.
![Thermal Efficiency Formula](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNDQiIGhlaWdodD0iMTQwIiB2aWV3Qm94PSIwIDAgMjQ0IDE0MCI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
What is work, Power & Energy. Thermal efficiency, Joules Law, Heating effect of current, Horse Power
There are three main series of transistor codes used in the UK:Codes beginning with B (or A), Codes beginning with TIP, Codes beginning with 2N
![Crocodile Clip](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMzUiIGhlaWdodD0iNjIiIHZpZXdCb3g9IjAgMCAxMzUgNjIiPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIHN0eWxlPSJmaWxsOiNjZmQ0ZGI7ZmlsbC1vcGFjaXR5OiAwLjE7Ii8+PC9zdmc+)
Transistor is an three layer PNP or NPN semiconductor device with two junctions. Transistor is made from semiconductor materials
![Transformer Resistance Test](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI3MDEiIGhlaWdodD0iMjAxIiB2aWV3Qm94PSIwIDAgNzAxIDIwMSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
Resistance Test on a Transformer Connect an ohmmeter across the two ends of the primary winding of the transformer and record the resistance.
![Transfer Of Power in Transformer Circuit](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1MDMiIGhlaWdodD0iMTc0IiB2aWV3Qm94PSIwIDAgNTAzIDE3NCI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
The power in the primary winding of a transformer transfers to the secondary. This is illustrated in the example below.
![Step-Down Transformer](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0OTMiIGhlaWdodD0iMjI2IiB2aWV3Qm94PSIwIDAgNDkzIDIyNiI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
There are basically two transformer types . Step Down Transformer, Step Up Transformer
![Transformer Construction](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1OTUiIGhlaWdodD0iNTgyIiB2aWV3Qm94PSIwIDAgNTk1IDU4MiI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
A transformer is an electrical device used to change the value of an alternating voltage. transformers are widely used in electrical work.
![Thevenin's Theorem Circuit Diagram](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0MjAiIGhlaWdodD0iMTkxIiB2aWV3Qm94PSIwIDAgNDIwIDE5MSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
Thevenin's theorem is a procedure by which we change a complex network in to simple network called thevenin's equivalent circuit.
![Super Position Theorem Circuit 1](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyODgiIGhlaWdodD0iMTE1IiB2aWV3Qm94PSIwIDAgMjg4IDExNSI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
In superposition theorem any linear bilateral circuit, which contain, G/R of same frequency the current that flows in any branch
![Node Voltage Method](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0MzgiIGhlaWdodD0iMjIyIiB2aWV3Qm94PSIwIDAgNDM4IDIyMiI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
Another alternate method of analysis of multiple loop circuits is called the node voltage method.
![Mesh Current Method](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0NDQiIGhlaWdodD0iMjIzIiB2aWV3Qm94PSIwIDAgNDQ0IDIyMyI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgc3R5bGU9ImZpbGw6I2NmZDRkYjtmaWxsLW9wYWNpdHk6IDAuMTsiLz48L3N2Zz4=)
In the mesh current method, you will work with loop currents instead of branch currents. A branch current is the actual current through a branch.
![Maximum Power Transfer Equation](data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxNDMiIGhlaWdodD0iNjMiIHZpZXdCb3g9IjAgMCAxNDMgNjMiPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIHN0eWxlPSJmaWxsOiNjZmQ0ZGI7ZmlsbC1vcGFjaXR5OiAwLjE7Ii8+PC9zdmc+)
A resistive load will abstract maximum power from a net work when the load resistance is equal to resistance of the network