PIR Controlled LED Driver Circuit


Posted on Feb 6, 2014

The circuit is a LED driver which responds to ambient lightas wellas to the presence of any intruder, and varies its illumination accordingly, lets know more. Also I would like to have an ambient sensor to switch on and off and a proximity sensor to switch to full brightness if some one approaches and to switch to half or 30% brightness after 30 s


 PIR Controlled LED Driver Circuit
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econds. I need this for commercial use. I need asimplecost effective circuit. I have been following the blog and am sure that you know the subject. Please get back to me. " The uppersectionis aproximitysensor circuit. The transistors T2 and T3 are configured as high gainamplifierand is able to sense even minute voltages from the PIR sensor.




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