Category Archives: Uncategorized

DESKTOP POWER SUPPLY

Useful for electronics hobbyists, this linear workbench power supply converts a high input voltage (12V) from the SMPS of a PC into low output voltage (1.25 to 9 volts). An adjustable three-pin voltage regulator chip LM317T (IC1) is used here … Continue reading

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Mobile Bug

This handy, pocket-size mobile transmission detector can sense the presence of an activated mobile phone from a distance of one and- a-half metres. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. … Continue reading

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Stress Meter

Stress Meter is a device which let us access our emotional pain. With the help of this device one can easily come to know about the stress level of human body. If the stress is very high, it gives visual … Continue reading

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