This circuit is represented here serves to illuminate a garden or any device we want that illuminates dark.
The circuit operation is based on a circuit 555, the period or length of stay high in the output is set by the capacitor C2 and R3 using the formula T = 1.1. RC, which will give a periodicity of 10 seconds. This will estimate the level of tension you get on pin 2 which is the trigger level brand that will be 2 / 3 of Vcc. So when this value is above the 2 / 3 Vcc shoot out and this will remain high for 10 seconds, this time it has been estimated by if they had small variations in voltage on pin 2, and we do constantly vary the output.
The output transistor is provided which oversees a relay and its associated protection diode. At the end of this relay connect a charge no more than 1500W.
Vin: +9 to +12 Vdc
Designed in Proteus v.7.1 SP2
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