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Test the iron loss and copper loss in a transformer
If the new transformer, then it must have been tested at the manufacturer's automatic seccara. but
how to use a LCD 16x2 Character with CodeVision AVR
LCD (Liquid Crystal Display) is a viewer module that is widely used because it looks interesting. LCDs are the most widely used today is of type M1632 LCD 16 × 2 because the price is quite cheap. M1632 LCD 16 × 2 LCD module to display a 2 × 16 (2 rows x 16 columns) with low power consumption. The module is equipped with a microcontroller specifically designed to control LCD.
For interfacing circuit, LCD 16 × 2 does not require a lot of supporting components. Only takes a variable resistor to provide a voltage contrast on the LCD matrix.
By using AVR CodeVision, programming to show the character or string to the LCD 16 × 2 is very easy because it is supported libraries provided by CodeVision AVR itself. We do not have to understand in depth the characteristics of the LCD, write and initialization commands already provided by the library of CodeVision AVR.
By using AVR CodeVision, programming to show the character or string to the LCD 16 × 2 is very easy because it is supported libraries provided by CodeVision AVR itself. We do not have to understand in depth the characteristics of the LCD, write and initialization commands already provided by the library of CodeVision AVR.
How a Keypad Matrix Work ?
Keyboard like on a computer keyboard, has a lot of input in the form of letters, numbers, symbols, functions, etc.. Using synchronous serial communication protocol and uses 2 lines of communication so that the SDA (serial data) and SCK (serial clock). Both are used for systems with many input and complex and very useful for some applications microcontroller.
While the keypad input matrix is the solution to quite a lot with a little pin mikrokontroller.Keypad using matrix generally consists of button / Push Button NO ( Normally Open ) which is coupled with an array of rows and columns to form a matrix . The composition of the matrix is what causes a lot of buttons by using the little pin microcontroller . If the composition of the matrix of 4 rows and 4 columns or 4x4 matrix keypad achieved so much is 16 buttons ( maximum of 28 keys ) , while as many as 12 key 4x3 matrix ( maximum 21 buttons ) .
Power supply
A power supply is a device that supplies electric power to an electrical load. The term is most commonly applied to electric power converters that convert one form of electrical energy to another, though it may also refer to devices that convert another form of energy (mechanical, chemical, solar) to electrical energy. A regulated power supply is one that controls the output voltage or current to a specific value; the controlled value is held nearly constant despite variations in either load current or the voltage supplied by the power supply's energy source.
Every power supply must obtain the energy it supplies to its load, as well as any energy it consumes while performing that task, from an energy source. Depending on its design, a power supply may obtain energy from:
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