Heat-Blocking Features Imaged by Ultrasound
When power is applied, an integrated circuit begins to heat up within its package. It shortly reaches the operating temperature range for which it...
The Vivaldi Browser Releases for Raspberry Pi and Other ARM Based...
OSLO, Norway – 5 December, 2017 – The Vivaldi browser releases an experimental build for Linux on ARM devices, including Raspberry Pi. With this...
16-Way Clap Operated Switch
Control your home appliances with this clap operated switch, without getting out of your bed. You just have to clap in the vicinity of...
Continuity Tester With A Chirping Sound
Today, there’s a party at your home. And you are busy detecting faults in the decorative lights hanging over the boundaries of your house....
Shadow Alarm: Light Sensitive Circuit
This light sensitive alarm circuit sounds an alarm whenever a shadow falls on it. So it can be used at night by shopkeepers to...
Multicell Charger
Using this multicell charger, you can safely charge up to two pieces of Ni-Cd cells or Ni-MH cells. The circuit is compact, inexpensive and...
Bicycle Guard
This anti-theft device for bicycles is inexpensive and can be constructed easily using a few components.
At the heart of the circuit is a wheel...
Solar Powered Pedestal Lighting System
This solar-powered pedestal lighting system uses power LEDs for lighting. Solar energy is first converted into DC electricity by a solar photovoltaic cell and used to charge a storage battery.
3V PC Adaptor
Plug this circuit into the available USB output port of your PC to get 50mA, 3V DC. So it can be used to recharge, for instance, two NiCd cells (1.2Vx2) of a portable music player system.
Voltage Based Controller For Switches
Here’s a simple voltage based controller circuit for controlling four switches from a distance through just a pair of wires.
Voltage based controller circuit
In the...
