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Current Sensor

EFY Bureau
The circuit presented here senses the flow of electricity through the appliances and generate an audible beep after every fifteen minutes to indicate the ON state of device.

220V Live Wire Scanner

EFY Bureau
Presented here is a 220V live wire scanner. The clock input of the IC is connected to a wire, which acts as the sensor....

Telephone Conversation Recorder

Pradeep Vasudeva, Principal Chief Conservator, MP Forest Department
This is a circuit for a telephone conversation recorder that can record conversations over the telephone in a tape recorder...

Humanoid Robots: Machines Moving Towards Humanity

EFY Bureau
There are concerns about the increasing use of robots and their role in society. Robots have replaced humans in performing repetitive and dangerous tasks...

Ensuring Lower Thermal Dissipation for Higher Efficiency

EFY Bureau
A renowned manufacturing firm incurred heavy monetary losses when clients returned 5000 units of its LED lights after discovering that the supplied units failed...

What You Need to Know to Create Accurate, Wearable Optical Heart Rate Monitors

EFY Bureau
Wearable optical heart-rate monitors have become quite popular as people strive to be more proactive about managing their health. Resting heart rate, after all,...

Innovations to Improve Your Lifestyle

EFY Bureau
Instantly turn your bicycle into an electric bike Convert your bicycle into an electric bike in a few minutes just by replacing the bicycle’s conventional...

PIN Diode Based Fire Sensor

EFY Bureau
Here is a PIN diode based fire sensor that activates an alarm when it detects fire. Thermistor based fire alarms have a drawback; the...

Harvesting Radio Frequency Energy

EFY Bureau
Most people do not realise that there is an abundance of energy all around us, at all times. We are being bombarded with energy...

Noise Meter

EFY Bureau
Normally, sound intensity up to 30 dB is pleasant. Above 80 dB, it becomes annoying. And if it goes beyond 100 dB, it may...
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