How To Create Your Portable Voltage Divider

By Melissa Williams


When you are designing a piece of audio equipment, one of your major concerns is how you get to regulate or control its volume. In this case, a potentiometer which is a variable resistor may be used for specific adjustments. The device used in this situation helps you gain controls for any variable.

This type of circuitry is of great aid when wanting to divide volumes of voltages sent. To simplify, the specific device that you should have is called a voltage divider. This happens to be one of the most fundamental circuits you will be dealing with in the field of electronics.

With three variables namely two resistors and an initial voltage, you can already turn a large Volt count into a smaller one which is considered as the output Volt. To simplify this, you could understand the process better using a certain equation. This equation is basically a representation of the Ohms law which observes a direct proportion relationship between a current and the difference of ends. Having said so, it is understood that as the current is reduced by the attached divider in between two resistances, the voltage released is also lowered.

This divider has two main parts namely the circuit and the equation. To make it work, first, you should secure a circuit by putting in two resistors together. The equation, on one hand, allows you to calculate the output after you have found the ratio of both resistors while considering the input volt as another variable.

Knowing these essentials, you may realize that you can also create your own portable divider. For this, you have to prepare the leads, resistors, alligator clamps, snap on connectors, a voltmeter and a standard 9V battery. This is the highest possible amount of V a simple electronic can handle. Some would limit it to a 5V only.

Begin by connecting the leads with an alligator clamp. One should contain the red lead resistor with 10 Ohms and the other should contain the black one which has 20 ohms. Then after connecting these leads, use the free end to twist these two together.

Putting together the two leads. Twist together both lead ends and lock it up using the last alligator clamp. After doing so, take the connector of your voltmeters then do the correct terminal placing. Red wires go to the positive terminal of your battery while the black wires refer to the negative one. Then you can start turning 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.




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