LASER based Door Alarm

This 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.

linK

Short circuit Protection

With this simple temperature to voltage converter circuit we can do a precise measurement of the temperature in a room. A NTC resistor or a thermistor is used as a sensor that has strong temperature dependence. If the NTC temperature rises then the output voltage rises with 0.5 V per 10C.
Short circuit Protection

Short circuit Protection

With this simple temperature to voltage converter circuit we can do a precise measurement of the temperature in a room. A NTC resistor or a thermistor is used as a sensor that has strong temperature dependence. If the NTC temperature rises then the output voltage rises with 0.5 V per 10C.
Short circuit Protection

Temperature to Voltage Converter

Temperature to Voltage Converter

Audio Mixer

Audio Mixer