Hi guys, I apologize for not publishing articles on the website but the two contributors do not participate anymore for reasons related to the quality of the published articles. I forgot to add the top 10 electronic circuits of the month because I am quite busy at my workplace. But enough with the personal talking and let’s see the top 10 for June 2011.
- Solar battery charger circuit
Here is a solar charger circuit that is used to charge Lead Acid or Ni-Cd batteries using the solar energy power. The circuit harvests solar energy to charge a 6 volt 4.5 Ah rechargeable battery for various applications.
- Vibration detector circuit
With the help of a simple ceramic piezo-electric detector it is possible to assemble an interesting and useful Impact sensor unit, which can be used to detect impact and vibration on doors, showcases, windows etc.
- Metal detector circuit
The metal detector circuit shown here must represent the limits of simplicity for a metal detector, yet the design works surprisingly well. It uses just one 40106 hex Schmitt inverter IC, a capacitor and a search coil – and of course the batteries.
- Stun gun circuit
This is a diy simple stun gun circuit schematic and In No Way Do I Recommend Building these Stun-Guns or the actual use of them for any purpose what so-ever.
- 12v to 220v inverter
This DIY 12V to 220V voltage converter is build with CMOS 4047 that is the main component of this small voltage converter that transforms a 12V DC into 220V AC.
- Sound activated switch
With this sound activated switch, control by sound may be very useful, not just on a robot but also for a bit of home automation, for example a sound-activated light responding to a knock on the door or a hand clap.
- Car battery monitor
Here is an interesting Car Battery Monitor circuit of a low power electronic dc voltmeter circuit that can be used with car electric systems that run on 12 volt batteries. The voltmeter is an expanded scale type that indicates small voltage steps over the 10 to 16 volt range for 12 volt batteries.
- Electronic dog repellent
The electronic dog repellent circuit diagram below is a high output ultrasonic transmitter which is primarily intended to act as a dog and cat repeller, which can be used individuals to act as a deterrent against some animals.
- Tachometer circuit
This digital DIY tachometer for bikes uses two reed switches to get the speed information of the bicycle. The reed switches are installed near the rim of the wheel where permanent magnets pass by.
- Laser door alarm
This laser door alarm is based on the interruption of Laser beam. A low cost Laser pointer is used as the source of light beam. When somebody breaks the laser path, the alarm will be generated for few seconds.
That’s all folks, hope to see you next month!