A D V E R T I S E M E N T
Above circuit is an fire alarm circuit which build using a fire alarm sensor component and sound generator component. With simple and cheap component, you can build this circuit for low cost.
The termistor is a fire detector sensor and the NE555 is an audio frequency generator which will resulting the sound of alarm from the speaker.
Source: fire alarm circuit
A D V E R T I S E M E N T
No. 1 — September 13th, 2011 at 1:41 pm
nice