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This capacitor is there again to filter out any noise or high-frequency ac signals that may be on the DC voltage line. The voltage dagasheet should always be fed as smooth of a DC signal as possible which gives the best regulated output so it can regulate it down to its specified voltage. Okay, so let’s recap on the circuit.

However, for experimental purposes and ease of getting parts, we will use a 9-volt battery as our input voltage. You can buy them at anytime and come back to this page and do the experiment anytime. Okay, now let’s build the circuit. But if you’re going to have a varying load, a potentiometer, for instance, on the output, it is well advised to add an electrolytic capacitor in parallel to the ceramic capacitor.

This is the pin that gives out the regulated voltage, which, in this case, is 5 datasbeet.

CT Datasheet catalog

If you don’t have all the parts, don’t feel bad. Remember, the input voltage has to be larger than the voltage that the regulator regulates out. This produces a voltage of 9 volts.

How to Connect a Voltage Regulator in a Circuit In this article, we go over how to connect a voltage regulator to a circuit to get a specific DC output regulated voltage. Pin 2 is Ground. More will be on this for more advanced projects, but this page is a good start for those starting off in connecting voltage regulators for basic circuits. So for instance, if you have 10 volts coming from a transformer that you want regulated down to 5 volts, the output of the transformer the 10 volts is fed into the regulator input pin 1 so that the regulator can regulate it down to your wanted voltage 5 volts.


A voltage regulator is a 3-terminal device. Therefore, it has a 8709ct effect and even things out. Also, design changes when dealing with the intended use of the circuit.

MIK CT (Микрон) – Стабилизатор положительного напряжения (5, 8, 12, 15 В) (корпус TO)

Let’s view the complete circuit now and explanations will ensue. Depending on the voltage regulator in datawheet, we can get a regulated positive or negative voltage, at whichever voltage we want. This electrolytic capacitor acts as a smoothing capacitor, when load resistance changes cause abrupt voltage spikes and drops, in a circuit. At the end of this experiment, when our circuit is hooked up, we’re going to read out the voltage with a multimeter and it should give out close to 5 volts.

How to Connect a Voltage Regulator in a Circuit

The first capacitor, the 0. For a circuit like this, where we’re lighting an LED, it isn’t exactly crucial to have a pure DC signal, but in other applications, such as when outputting voltage to power a logic chip, which needs a precise voltage fed into it in order to give the correct logic output, it is crucial. Pin 1 is the Input Pin. In this case, we are using a LM, which outputs 5 volts.

The LM78XX voltage regulators are a popular kind for regulating and outputting positive voltage, while the LM79XX are a popular series of regulators for negative voltage. It shorts this noise to ground and allows the pure DC signal into the regulator.

This capacitor is there to filter out any noise coming from datashee voltage source the battery. For now, you can just follow along. It hooks up to the ground in our circuit. In this article, we use a positive voltage regulator, which outputs 5V, the LM regulator. In order for the regulator to output 5 volts, the voltage entering has to be at least 2 volts higher, so it has to be at least 7 volts. The voltage regulator works best and will be most efficient when a clean DC signal is fed datasheft it.


Always consult the Manufacturer’s Datasheet for the voltage regulator in use for a circuit to see how to hook it up with the necessary required external components. The second capacitor, the 0. The first capacitor, the ceramic 0. The Datasheet specifies which value of capacitors to use, so it’s a good idea to learn from the people who manufacturered the chip.

Sign up for Our Newsletter Name: It shorts the AC signal of the voltage signal which is noise on the voltage signal to ground and only the DC portion of the signal goes into the regulator.

We don’t want any ac noise ripple imposed on the DC line voltage. Before we can hook up the circuit, let’s first go over the pinout diagram of the voltage regulator, which is vital for hooking up the circuit. Keep in mind that the design of a voltage regulator depends on the voltage regulator being used and the intended use of a circuit. Pin 3 is the Output Pin. Usually the only external components necessary are just capacitors, though heat sinks may also need to be added when heat dissipation is necessary.

After it comes out of the regulator, the other capacitor, the 0.