There Are Two Types Of Transformers 5s2m1s

There are two types of transformers, namely: Step down and Step up transformers. Generally, the difference between them is the amount of voltage produced, depending on the number of secondary coils. Step-Down Transformer

In a step-down transformer is one who secondary windings are fewer than the primary windings. In other words, the transformer’s secondary voltage is less than the primary voltage. So, the transformer is designed to convert high-voltage, low-current power into a low-voltage, high current power and it is mainly used in domestic consumption. Step-down transformers are mostly used to convert the 220 volts electricity to the 110 volts required in most domestic equipment. Step-Up Transformers

A step-up transformer is the direct opposite of a step-down transformer. There are many turns on the secondary winding than in the primary winding in the step-up transformers. Thus, the voltage supplied in the secondary transformer is greater than the one supplied across the primary winding. Because of the principle of conservation of energy, the transformer converts low voltage, high-current to high voltage-low current. In other words, the voltage has been stepped up. You can find step-up transformers located near power plants that are designed to operate megawatts of power. Apart from the power plants, step-up transformers can also be used for local and smaller applications such as x-ray machine which requires about 50,000 volts to work. Even a micro-wave oven requires a small step-up transformer to operate.

The value of the resistor is marked on the body using colors. Every color is different number and you can these numbers or you can just use the table on next step. OR there are much resistor calculators that you can use. It's for the laziest people :D . However it's your decision ,and I will show you all ways to calculate resistor value. Colors Here is the table with the colors and numbers. As you can see they are: BLACK:

0

BROWN: 1 RED:

2

ORANGE: 3 YELLOW: 4 GREEN:

5

BLUE:

6

VIOLET:

7

GREY:

8

WHITE:

9

But this is not for all colors. From right to left the second color is multiplier. Digits from the first colors must be multiplied with the number of this color. BLACK:

1

BROWN: 10 RED:

100

ORANGE: 1000 YELLOW: 10000 GREEN:

100000

BLUE:

1000000

GOLD:

0.1

SILVER:

0.01

And the last color: This is tolerance. Tolerance is the precision of the resistor and it is given as a percentage. For example a 390 resistor with a tolerance of ±10% will have a value within 10% of 390, between 390 - 39 = 351 and 390 + 39 = 429 (39 is 10% of 390). BROWN: 1% RED:

2%

GOLD:

5%

SILVER:

10%

NOTHING: 20% Examples Exemple: If first color is RED ,second is RED ,third is BLACK and the last is SILVER it means: RED - 2 -- RED - 2 -- YELLOW - x10000 -- SILVER - 10% 2 2 0000 +/- 10% * 2 2 0000 so... :D 220000 +/- 22000 This is 220 000 Ohm or 220 kOhm or 220 000 - 22 000 Ohm or 220 - 22 kOhm or 220 000 + 22 000 Ohm or 220 + 22 kOhm

so...