How to make a fire Alarm sensor
This Post only for demonstrate how a make a Fire sensor using Transistor and detect fire .. Its easier to make a Fire alarm project With this circuit. Ill make a project at future with this.. Requirement Components: 1. transistor 2x BC547 2. LED 3. 3 Register 10k Ohm 2x + 18k Ohm 1x 4. 9v Battery + battery Clip (You can use less or more then 9v , just need to change Resister with battery voltage. i prefer battery voltage should be between 6-12v). 5. some wires . normally use jumper cables. NB: Here I used Read LED , this led more voltage tolerant then white LED . so you must choose more Ohms Register for ignore fusing your LED. Circuit Diagram: How Diagram work: when the 3 number register's coil worm up a small current flow through base and on the other hand the first transistor collector already got current , so base current with collector current make flow emitter current which flow towards...