Simple electronic circuits

We understand that simple electronic circuits are very important. My friends used to say the large projects electronics, came from small several electronic circuits to combinations. You would think that this statement is true. And some of your work. Lack of small things. The circuit will allow it to work well.

Electronics are something near us. For example, cell phones, computers, televisions, etc. Everything needs electricity as a source of power, by plugging in a home or charging with AC adapter. Internal these appliances consist of devices called those electronic components. They are connected in a manner known as electronic circuit. The using of these appliances, we do not need to learn the workings of the electronic circuit within it.

Many simple electronic circuits
Many simple electronic circuits

But learning electronic circuit is a very good skill or ability. The working principle of electronics is tedious and useless. Because of all the knowledge. It is useless. If it is not used. We like the food stored in the refrigerator but it will not make full your stomach. We have to bring it to cook or eat before.

If you have a passion for electronics works. We should learn electronics by using electronic circuits to create the fun projects. To solve everyday problems, is good, Make your free time useful. If you have technical skills so can save money. Because when the appliance is broken, it can be repaired initially.

Also for the beginner. Seeking ideas decidedly. This article I would like to compile a simple electronic circuit. For convenience to my friends.

Top simple electronic Circuits

Popular 1A Fixed Regulator using IC-78xx

Top electronic circuit: Regulator 5V,6V,9V,10V,12V 1A By IC 7805,7806,7809,7812
As usual, the main power source of an electronic circuit is the battery. Because it is small, energy is clean and safe. For example, most circuits use 9v batteries. When its power is gone. We need to buy a new replacement. It’s not convenient at all. Thus I make 9V power supply instead it. The first choice we recommend using LM7809 from family IC-78xx as popular three-terminal linear regulators. In circuit ACV 12V to 18V from a transformer is fed to D1-D4 Bridge Diode to rectifier AC to DC, then C1-capacitor filter to smooth DC. Next IC-7809 converts an unregulated DC voltage between +12V and +18V to stable +9V.

In addition, if we need other voltage levels. For example, 5V digital We use the IC-7805 instead of IC-7809. So IC-7812 = 12V DC output.

The load is typically regulated to within 10mV and no more than 50mV. You can see More simple electronic Circuits use them.

Variable power supply using LM317

Top electronic circuit: 1A Variable Power Supply for beginner
Sometimes we need to use 1.5V power supply circuit but we cannot normally use IC-7805. Or we need to use other voltage e.g. 13V or 4.5V. The best way we need the Variable Regulated power supply. We are beginner and easiest we use LM317 (3 terminal positive adjustable regulators).

The LM317 is an adjustable regulator IC that designed to many supplies for 1.5A output and adjustable over 1.2V to 37V, and with current limiting, thermal shutdown, full protection. This circuit is designed for you. It can supply voltage 1.2V to 30V at all range is 1A
Read more : LM317 simple electronic Circuits

30 Minutes Transistor Timer

Timer set for 30 minutes using transistors
We use this simple electronic circuits. To learn the basic timer circuit. The working of Circuit is based on learning of the charge and discharge the Capacitor. and can be applied in the off electrical appliances. The application has also put relay instead of LED can be enabled

5-30 minutes timer circuit using IC 555

Timer set for 30 minutes using transistors
This timer circuit uses a 555 IC timer number. This small, compact and portable. For the snooze alarm by buzzer when some 5 to 30 minutes. It makes clear the brain is ready to continue to work.

Two Simplest Inverter Circuits using 2 transistors only

Two Simplest Inverter Circuits using 2 transistors only
When we need to use an inverter. Sometimes we cannot find it. But We can build it easily. In two Circuit diagram below, just use 2 transistors,2 resistors, and one transformer only. They can convert 12VDC from battery to 220VAC or 120VAC to apply small light bulbs or lamps max 10 watts

Small High Volts shock using 2SC1815 transistor

Small High Volts shock using 2SC1815 transistor
This is small high volts shock circuit, pressure from the low current. It is perfect for fun play. In circuit has a few components just two small NPN transistors, 2 resistors and a transformer. So easy to builds and cheap!

Low watts Audio amplifier circuit with PCB

Low watts Audio amplifier circuit with PCB

This is my first audio amplifier circuit. I use LM386 is main, it is a low voltage (5V-12V) amplifier designed specifically for audio applications. Which can be used with a small 9 volts Battery operated, Current use as little as 5 milliamps. And amplification up to 500 mW. The gain is internally set to 20. The gain can be increased to 200 by connecting a 10-uF capacitor across pins 1(+) and 8(-). Enough to expand the sound from a mobile phone to 3-inch loudspeaker easily.

Low watts Stereo amplifier circuit

Stereo amplifier circuit
This is my first stereo power amplifier circuit kits that can be used with a small 9 volt Battery Operated, Current use as little as 5 milliamps.And amplification up to 500 mW.

LED Chaser circuits using IC 4017 + IC 555

LED Chaser circuits using IC 4017 + IC 555
There are 5 circuits with PCBs about LED Chaser circuits or Running lights. They use IC-4017 to drive LEDs and IC-555 as oscillator pulse generator. It is best for a beginner or for kids learn digital also my son loves them.

Dual LED Flasher using 2N2907

Dual LED Flasher using 2N2907
This circuit calls more Free Running Multivibrator work resemble Flip Flop. Which encourage itself repeatedly. The Q1 and Q2 be Transistor PNP be usable general (2N3906,2N2907, etc.)

Simple music sound using UM66T

Simple music sound using UM66T
In the circuit basically usability base IC UM66T use the sound of music sweet-sounding origin and be usable easily. It uses just integrated one circuit and a loudspeaker, piezo buzzer, the small-sized, and have power supply 3V only.

Learn more : Simple Electronic circuits


  1. sardar ali March 13, 2014 Reply
  2. P450 March 21, 2014 Reply
  3. CHRISTY TOM VARGHESE June 7, 2014 Reply
  4. vasudev June 30, 2014 Reply
  5. peter July 9, 2014 Reply
  6. subramanin July 12, 2014 Reply
  7. Sura jamal October 20, 2014 Reply
  8. [email protected] October 23, 2014 Reply
  9. hussain December 14, 2014 Reply
  10. Robert February 11, 2015 Reply
  11. daniel June 16, 2015 Reply
  12. momename June 16, 2015 Reply
  13. Masud Rana June 22, 2015 Reply
  14. momename June 22, 2015 Reply
  15. muhammad arslan August 15, 2015 Reply
  16. muhammad arslan August 15, 2015 Reply
  17. IvanB December 30, 2015 Reply
  18. Yohanes December 30, 2015 Reply
  19. srst nikesh January 19, 2016 Reply
  20. nelson July 27, 2016 Reply
  21. Gibrilla Jalloh August 27, 2017 Reply
  22. Admin August 27, 2017 Reply
  23. john April 6, 2018 Reply

Add a Comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.