Evening Timer for Mosquito Repellent


Circuit-of-Evening-Timer-4Mosquito Repelling vaporizers are generally switched on throughout night to repel mosquitoes. This is not necessary because Mosquitoes become active during the evening hours for feeding. If it enters the home in the evening, it will bite in the night also if gets a chance. So the best method is to use the vaporizer in the evening hours. This circuit automatically turns on the vaporizer around 6 pm and keeps it on till 9 pm and after that, it switches of the vaporizer. This reduces the quantity of inhaling fumes and also increases the usage days of vaporizer. The circuit can be enclosed in the switch box itself.
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Code Reading Lamp


Here is a dual colour lamp to read the code printed on the Transistors and ICs. The code and number printed on the black coloured body of these components are difficult to read if the room light is low since the printing is in faint colour or as impressions. This LED lamp is useful to identify the components easily.

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Timer for Charger


Some Microcontroller based Laboratory instruments such as Digital balance, pH Meter etc have rechargeable battery inside. This inbuilt battery should be properly charged for the error free operation of these instruments. If the instrument is not using (or charging) for long time, its inbuilt battery will be destroyed permanently. This timer circuit helps to keep the battery in top condition through automatic charging for 5 to 6 hours daily so that the instrument can be left unattended. The battery will be charged only during the day time.

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Timely Beeper


You can fix this circuit in the switch board that provides power to the loads such as Water heater, Electric Iron etc to remind you that the load is switched on. LED blinks indicating the load on status and the buzzer beeps every 30 minutes. This helps to prevent the wastage of energy usually happens when we forget to switch off these devices. This can be also used to remind, if remote lights such a terrace light is switched on unnoticed.

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