There are many times you wish to a specific device of your own to reduce volumes or any measurements of your concern. An example could be your audio equipment, deflections in a cantilevered stairway, or even the noisy tachometer of your motorbikes. For these adjustments, you may opt to use a potentiometer which is a variable resistor.

In some cases, devices which involve circuitry and an equation are produced as an aid to these situations. Known as the most fundamental circuit, this tool is called a Voltage Divider. It is a passive circuit which helps reduce the large volumes of your audio equipment or other electronics.

The Ohms law is used to understand the result of this device. It states that current flowing in a conductor is proportional to the difference between its ends. Meaning, if the current is reduced, then the Volt is also reduced.

There are two essential parts of this divider, one is the circuit and the other is the equation. The circuit pertains to a source of the Volt which goes across two resistors. For the equation, you have to assume three values namely input voltage, resistor one R1, and resistor two R2. The output value could be found by taking the ratio between R1 and R2.

You can also create your own device if you wish to but you have to be mindful that when creating your portable gear. Most simple electronics can only withstand 5V, however, most sources like for example your remote control, a standard 9V battery will do. To do so, first, you should prepare the specific tools needed such as your leads, resistors, your battery, three alligator clamps, connectors and your voltmeter.

Start by connecting one lead to a red lead of a 9V battery with an alligator clamp. Then using another lead, do the same steps but this time using the black lead of the connector. After, you can twist the free end of each resistor together.

Make sure that you have provided a solid twist for it by clamping an alligator clamp on it. Then look at the positive and negative terminals of the battery. When found, attach the red wire to the positive and the black wire to the negative. Then turn your meter on.

As you can see from 9V, your voltage goes down to 3V. When this happens, the positive terminal of the circuit is now the one where the twist is located. Meanwhile, the negative terminal is retained as the negative source.

Creating your own portable device is just easy. However, you have to take safety measures for this. When dealing with a 9V battery, however, you may not see a lot of danger for it in terms of electrocution possibilities. But for other electronics, make sure that you have unplugged the wires before working on it.