This post explains for the Voltage Regulator.
The Part Number is 7812CT, MC7812CT.
The function of this semiconductor is 1A, 12V, Voltage Regulator.
The package is TO-220 Type
Manufacturer: Fairchild Semiconductor
Preview images :
Description
The 7812CT, MC78XX / LM78XX / MC78XXA series of three terminal positive regulators are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
Block Diagram:
Features
1. Output Current up to 1A
2. Output Voltages of 12V
3. Thermal Overload Protection
4. Short Circuit Protection
5. Output Transistor Safe Operating Area Protection
7812CT PDF Datasheet
