How To Connect A Voltage Stabilizer

A voltage stabilizer is any device that keeps the voltage of a circuit at a specified level. There are many different types of voltage stabilizers but integrated circuit (IC) voltage stabilizers are among the most common. You will frequently need a voltage stabilizer for components that require regulated power. You can demonstrate the use of a voltage stabilizer in a circuit with a few components from an electronics parts store.

Step 1

Identify the parts of the voltage regulator. Place the voltage regulator so that you can read the printing on it. The digits "78" indicate a positive voltage regulator and the digits "05" indicate a 5-volt regulator. For a positive voltage regulator like a 7805, the left lead is the input, the middle lead is the ground and the right lead is the output.

Step 2

Mount the voltage regulator on the mounting board. Each of the voltage regulator's three leads should be inserted into a different hole in the mounting board so that the three holes are in the same column but different rows.

Step 3

Mount the light bulb on the mounting board. Insert the lead for the light bulb's positive terminal into a hole on the same row as the voltage regulator's output lead. Insert the light bulb's negative lead into a hole on the same row as the voltage regulator's ground lead.

Step 4

Insert the positive lead of the battery holder into a hole on the same row as the voltage regulator's input. Insert the negative lead of the battery holder into a hole on the same row as the voltage regulator's ground and the light bulb's negative lead.

Step 5

Place the battery in the battery holder. The light bulb now receives a stable voltage of 5 volts even though the power supply is a 9-volt battery. This type of voltage regulator will dump the excess voltage as heat.