Reset in 8051 microcontroller is an operation to reset all operation , clears register value and set to it initialize mode.
To reset microcontroller RESET (Pin No: 9) must be active high at least two machine cycle.
The 8051 microcontroller has on chip oscillator circuits, which act as clock generating source for it. The output pulses of oscillator circuits are stable . So, it can be used to synchronize the operation of all circuit block inside the microcontroller and external circuits.
Clock cycle and machine cycle in microcontroller Read More »
The pin diagram of 8051 microcontroller gives information about input and output ports, interrupts, serial ports etc. about microcontroller. So, it will be useful to configure it perfectly in any kind of circuit to be build. The 8051 microcontroller has 40 pin to communicate with external machines and interfaces. Each pin has its unique functions.
This 8051 micro controller is designed by intel company in 1980. It designed in based of Harvard architecture used in embedded system. The 8051 micro controller block diagram is shown below. This divided into various parts as various parts. Let us study in details.
positive shunt clipping circuits is device which restricts positive wave form to flow across output devices,
The Series clipping circuits is mostly used in electronics circuit to trim unwanted portion of signals. So that necessary magnitude of signal can be passed to further stage for processing. The clipping circuit is most necessary to clip more than desired amount of signal. Because it will safe devices from damages due to unexpected large
This article will explain in detail about efficiency of transformer under various conditions. As we know that efficiency is most important criteria in all equipments. This efficiency determines performance of a machine. Also defines about how it is useful for practical applications Definition of efficiency Efficiency of a equipment generally said as ratio of output
As long as study that flux induced in primary winding in linked with secondary of the transformer without any losses. But in practical scenario it is not correct. There are few amount of flux definitely leaks while linking with secondary winding. If transformer is air core, flux transfer via air medium. On other hand iron
This article shows about, why high voltage transmission is required in transmission of electrical power. The Alternating supply generated from generating station preferably transmitted with high voltage level. Because transmission of supply with high tension supply has numerous advantages as follows
Transmission line are neural scheme of electrical system. Because it transfer electrical energy from power stations to different locations. To transmit electrical energy suitable conductor and transmission system is necessary. This article study about classification of transmission lines basis on distance travelled by electrical energy through conductor. Because load center are not lumped at single place. It will be spread to all over area.
The ideal transformer is a term used to study its characteristics in theoretical study purposes. Because Ideal transformer does not have losses. Power delivered to load in equal to power given to transformer. It also may be said as there are no internal losses in the transformer.
In this article let discuss about What is Transmission lines and its types. Electrical energy plays vital role in our every day life. Because without consumption of electrical energy it is very difficult to fulfil our daily needs. In addition to , it useful source to development of modern scientific development in the world. We use different form of energy in our daily life, which can be generated using electrical energy. In absence of electrical energy life become nightmare.
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This article let us discuss about various types of losses in transformer. When transformer connected with primary input power supply, it transforms and feed to load through secondary winding. But it never supplies output power equal to the input power given to it. Few power losses are happened inside transformer. So, output power is always less than input power.
he energy needs to transformed and energy in form of transformation has to obey few relations with ratios of the transformer. These ratios are often called as transformation ratios of transformer. There are three types of ratios are involved in the transformer as listed below,
