Transistor is used to drive relay to connect AC loads. For efficient working, it is important to connect the relay correctly in NPN and PNP transistors. See the way of connection. Continue reading
7 segment display is used in Counter circuits, Temperature sensing circuits, Timers, Clock circuits etc. Let us see its pins and way of connection Continue reading
CD 4060 is the versatile Binary counter IC that can be used in Timer applications.When a resistor is connected to its pin 10 and a capacitor in its pin 9, it forms an oscillator that gives pulses to its pin 11.According to the timing cycle, each output goes high one by one. Output gives around 10 mA current and a voltage near to the supply voltage. Timer oscillates only when its Reset pin 12 is grounded. Continue reading
PIR sensor is the ideal device to use as Surveillance systems that operates by sensing human body heat. It triggers the alarm from a distance of 10 meters when a human passes. It operates both day and night. Let us see how to fix it on the wall
The PIR sensor module has a Jumper arrangement to select single trigger and re trigger modes. Let us see how it works Continue reading
It is important to know the connections of PIR sensor module. It is easy to connect it with alarms, relay to drive AC load etc. Let us see Continue reading
PIR sensor module is an ideal device to make efficient alarm systems and save energy lights. Let us see how it works?