In this presentation we have mentioned few mini electronics projects circuit diagrams, the complete information of these electronics projects can be found by clicking on the link given below of each schematic diagram.

2. Introduction
Circuitdiagram.org is making continuous effort in the field of
electronics for helping electronic engineering students and
electronic engineers by providing project ideas that can be
used directly or added in their electronic projects. All the
circuits on our website are reliable, versatile and can be
further enhanced easily.
We frequently come up with a new idea and add that new idea
in the form of newly designed circuit on our website.
So to get updated with our new added circuits do not forget to
visit www.circuitdiagram.org often.
Thanks
Circuitdiagram.org Team.

3. About This Presentation
In this presentation we have mentioned
some mini electronic circuits, the
complete information of these electronic
projects can be found by clicking on the
link given at the bottom of each circuit
diagram.

4. Sensitive Sound To Light Project
A very useful sound to light project that can blink LEDs on Voice or
Music.
For complete information about this project
click here > Sound To Light LED Project

5. Non Contact AC Voltage Detector
Non Contact AC Voltage Detector Circuit. It flashes and LED and
beeps a buzzer when AC voltage is detected.
For complete information about this project
click here > Non Contact AC Voltage Detector

6. Temperature Sensor Relay Switch
Simple and low cost circuit of a temperature sensor relay switch.
For complete information about this project
click here > Temperature Sensor Relay Switch

7. Simple 12V & 6V Battery Charger
With Auto Cut off
A simple & easy to build versatile & adjustable automatic battery
charger for 12V, 6V & other voltage batteries with 5A, 10A or more
charging current depends on relay used.
For complete information about this project
visit : http://www.circuitdiagram
.org/12v-6V-battery-charger-with-auto-cut-off.html

8. 555 Repeating Timer
This is an adjustable repeating timer using 555 IC. A relay switch is
connected at the output to control AC & DC appliances.
For complete information about this project
click here > 555 Repeating Timer

9. Low Battery Voltage Cutoff Or
Disconnect Circuit
This automatic low battery disconnect circuit will disconnect the
battery from the load to save it from deep discharge / damage.
For complete information about this project
click here > Low Battery Voltage CutOff Or Disconnect

10. This simple long duration timer using 555 timer IC can be adjusted
from few minutes to many hours.
For complete information about this project
click here > Long Duration Adjustable Timer Using 555
Long Duration Adjustable Timer
Using 555 Timer IC

11. A completely automatic circuit of water pump controller using 555
timer IC. Very simple, reliable and low cost circuit.
For complete information about this project
click here > Automatic Water Pump Controller
Automatic Water Pump Controller
Circuit

12. A very simple laser security alarm using only a single transistor &
few other components.
For complete information about this project
click here > Simple Laser Security Alarm
Simple Laser Security Alarm.

13. A simple latch switch can be built using only two transistors. Using
a relay switch at the output to control AC or DC appliances.
For complete information about this project
click here > Latch Switch Using Transistors
Latch Switch Using Transistors.

14. This mains fluctuation time delay circuit will save electrical
appliances damaging from sudden mains voltage fluctuations.
For complete information about this project
click here > Mains Fluctuation Detecting Time Delay
Mains Fluctuation Time Delay.

15. A smart door bell that will become activated when someone knock
on the door. The circuit is quite sensitive & can even detect a very
slight knock.
For complete information about this project
click here > Door Knock Activated Bird Bell
Door Knock Activated Bird Bell.

16. This is a project of a universal automatic battery charger using 555
IC. The circuit can be adjusted to charge any voltage battery.
For complete information about this project
click here > 555 Universal Automatic Battery Charger
555 Universal Automatic Battery
Charger.

17. This useful main gate night light project can be used for security and
power saving purposes.
For complete information about this project
click here > Motion Sensing Main Gate Night Light
Motion Sensing Main Gate Night
Light.

18. A very simple and low cost plant watering or irrigation control
system can be built using this circuit.
For complete information about this project
click here > Automatic Plant Watering / Irrigation Control
Automatic Plant Watering /
Irrigation Control.

19. These are the few mini electronics projects from
our website, there are hundreds of more new &
unique electronics projects on our website, and new
projects are added frequently.
visit: http://www.circuitdiagram.org/ more
electronics projects.