12V to 5V | 7805 Voltage Regulator Full Simulation & Connection Diagram.

How are you all? I hope everyone is well and healthy by the grace of Allah. Today I will share with you the 7805 voltage regulator diagram and connection.

Edited with Canva.

We work on different electronics topics at different times. Sometimes we are unaware of some things, so today we will share one thing, which is a voltage regulator. Suppose you want to run a Bluetooth speaker, but you do not have a Bluetooth connection inside that speaker; everything is powered by the cable. Now suppose that the loudspeaker you have is powered by 12 volts and the Bluetooth circuit that you will replace inside that speaker is powered by 5 volts.

Now if you want to make a Bluetooth speaker, you have to generate 5 volts from 12 volts and power that Bluetooth circuit. That is why sometimes we use some voltage regulators to get a stable 5 volts from 12 volts. Today I will show you that, so let's show you step by step.

Parts Used and Function:

12 Volt Power Supply:

Edited with Canva.

Used to provide the main input voltage for the regulator circuit.

7805 Voltage Regulator:

Used to convert the 12-volt input into a stable 5-volt output.

LED (5 Volt):

Used to visually indicate the output voltage by lighting up.

1 µF Capacitor (25 Volt):

Used to smooth the output and reduce voltage noise.

Digital Voltmeter:

Used to measure and display the 5-volt output from the regulator.

Step -01

Here you can see I have drawn a voltage regulator symbol diagram, and there are three pins: 1, 2, and 3. The first is 12 volts in, the second is ground, and the third is the 5-volt output.

Step -02

Now you can see from the diagram on the left side I have taken a 12-volt power supply and connected it to pin one of the 12-volt positive regulator and connected it to the ground of the 12-volt negative regulator.

Step -03

Now you can see that I have used a 5-volt LED light from here. Here the connection from ground to the negative end of the LED has come, and the output of the voltage regulator has come from pin 3 to the positive connection of the fixed 5-volt LED.

Step -04

In diagram number 4 you can see that I have drawn a real picture of a voltage regulator, and I have connected a 1 µF 25-volt capacitor to the positive and negative of the LED, and I have connected a voltmeter on top, which shows the remaining voltage after taking the load.

Step -05

Here you can see a simulation picture. I will show you a real output here, and a video is given below. If you want to know how the connection was given, how its output was taken, how the output was checked with a digital multimeter, and up to what voltage was given—everything is explained in the video. If you want, you can watch the simulation video.

Video Tutorial: To better understand the practical part of this tutorial, you can watch the video below.

7805 Voltage Regulator – Output Data Sheet

Parameters	Values / Details
Model Number	7805 (Fixed 5V Regulator)
Input Voltage Range	7V – 35V
Recommended Input	9V – 12V
Output Voltage	5V DC (Fixed)
Maximum Output Current	1A (Typical)
Dropout Voltage	2V – 2.5V (Approx)
Load Regulation	50mV – 100mV
Line Regulation	3mV – 30mV
Operating Temperature	0°C to 125°C
Package Type	TO-220
Pin 1	Input (+12V)
Pin 2	Ground (GND)
Pin 3	Output (+5V)

🟩 Thank you for reading my post and giving your valuable time. Stay well and stay healthy. God bless you. 🟩

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