Monday, September 8, 2014

Mosquito repeller power saver


Almost all liquidator type mosquito repellers are rated 5Watts.It is a pretty energy consuming game when these repellers are operated through out the night.Even though these liquidators are switched ON and OFF in discrete intervals there will be no considerable loss in the effectiveness,and more over there will be a great saving of energy.Then why can’t we do that and that’s why I designed this schema.







The schema is nothing but an astable multivibrator designed of IC NE 555 (IC1) operates in a frequency determined by the values of R1 and C2.When the power is switched on the out put of the IC goes high .This makes Q1 to conducts and the relay connects the mains supply to the repeller plugged in the socket shown.After the set time theout put of the IC goes low and now the repeller is removed from mains by the relay.This cycle repeats and the repeller will be switched On and OFF in frequent intervals,saving a lot of power.Diodes D2,D3 forms a half wave rectifier with C1 as the filter,supplies the schema with power .




Notes.

* Assemble the schema on a good quality common board or PCB.
* The intervals of ON and OFF can be adjusted by varying Preset R1.
* Some parts of the schema are live with potential shock hazard.Be carefu


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