In the transformer scheme in addition, when the electric current flowing from the voltage source to

Coil is a coil of wire on top of a core. Depending on the need, which is widely bedroom doorbell used in radio air core and ferrite core. Coil also called an inductor, inductance values expressed in magnitudes Henry (H). In radio, the coil is used: As a regulator of frequency coil damping As As As a means of coupling filters (connective)
Transformer (transformer) is a device used to raise or lower the voltage of alternating (AC). The transformer consists of three basic components, namely: first coil (primary) bedroom doorbell which acts as the input, bedroom doorbell the second coil (secondary) which acts as an output, and an iron core that serves to strengthen the magnetic field generated.
The working principle of a transformer is as follows. When the primary coil is connected to a source of alternating voltage, electric current changes in the primary coil cause a changing magnetic field. Changing magnetic field is strengthened by the presence of an iron core and iron core is delivered to the secondary coil, so that the ends of the secondary bedroom doorbell coil induced emf will arise. This effect is called mutual inductance (mutual inductance).
In the transformer scheme in addition, when the electric current flowing from the voltage source to the primary coil reverse direction (change polarity) magnetic field generated will change the direction so that the electric current generated in the secondary coil will change polarity.
Based on a comparison between the number of primary winding and a secondary winding transformer number there are two types: step-up transformer is a transformer that converts a low voltage alternating be high, the transformer secondary coil windings bedroom doorbell has a number greater than the number of primary winding (Ns> Np). A step-down transformer is a transformer that converts alternating high voltage is low, the transformer has a primary coil winding number greater than the number of secondary windings (Np> Ns).
In transformer (transformer) issued by the magnitude of the voltage of secondary coil is: Comparable to the number of secondary winding (Vs ~ Ns). Proportional to the magnitude of the primary voltage (VS ~ VP). Inversely proportional to the number of primary windings,
Transformer (transformer) used in electrical bedroom doorbell equipment particularly those requiring a change or adjustment bedroom doorbell of the magnitude of alternating voltage. Eg radio requires a voltage of 12 volts when 220 volts of electricity, it is necessary transformer to convert alternating electrical voltage of 220 volts of electricity into alternating voltage of 12 volts. Examples of power tools that require a transformer are: TV, computer, copy machine, and so on electrical substations.
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Understanding Integrated Circuit / IC | Integrated Circuit or IC is commonly referred to as an electronic circuit that is packed into a small package. Or some great series that are integrated into one and packed in small packs. One small IC can contain hundreds or even thousands of electronics components. IC shape can vary, there is a 3 legged LM7805 bedroom doorbell for example, there are exactly like the transistor and there is also a many-legged example LM741 or as in today's modern mobile devices, tablets, Personal Computer (PC), which has up to hundreds of feet and other . Form of ICs such as Transistors ICs various shapes other than as shown above there is also that resembles a comb (single in-line) single-in-line IC Form Form Integrated Circuit (IC) is another rectangle with legs are on the four sides, and a dual-shaped IC in-line (DIL) legs only be on both sides. DIL IC IC & Legs are on all four sides How to read the serial number of the IC: Integrated Circuit (IC) that is round and dual in line, his legs were given numbered in the order in a clockwise bedroom doorbell direction, the feet always be number ONE dot ( small spheres). Each IC is marked with a type number, type number usually indicates the type of IC, so if the number is the same then the same function IC. Other codes indicate the manufacturer, for example, type 741 operational amplifier can arise with signs uA741, LM741, MC741, RM741, SN72741, and so on. Good Work!!
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