The Light Actuated Relay Circuit be office circuit with the light. The prominent point of this circuit be meet the light has fast more using LDR the very. When the light leaves work suddenly. When meet the light makes Photo Transistor work bias current change it has made the transistor works to cause Relay work [...]
The Sun - Up Relay Switch can be used to provide a audible switch for when the sun comes up. It can also be used to detect a light beam, headlights etc.
This circuit is easy because it used one Transistor 2N2222-2SC945-2SC828-BC549 etc , Relay and Photo transistor Only. The important part of the circuit is [...]
This track is designed to allow users to turn off a light switch away under beds, so that they may have enough time to lie down before the light switch off really.
It is clear that users will be able to find different applications on the track to meet their own needs.
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