Security & Safety

Security & Saftey

PIR Sensor Based Security System

The circuit of an inexpensive and highly secure electronic security system is explained below. This electronic security system can be used in banks and other high security areas. A normal electronic security system will have a transmitter and a receiver. The transmitter sends out an IR laser and this will be received by the receiver. […]

Security & Saftey

Lightning/Surge Protector Circuit Using Gas Discharge Tube (GDT)

Gas Discharge Tubes (GDT) – Introduction GDT’s are special type of gas filled tubes used for wide range of electronic/electrical circuits for providing protection against lightning and other power surges.  These tubes basically has two electrodes that are kept inside a gas filled closed envelope. In case of electronic applications, the container is mostly ceramic

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