https://electronicscheme.net/car-parking-guard-based-ir-sensor/?utm_source=rss&utm_medium=rss&utm_campaign=car-parking-guard-based-ir-sensor Schematic Diagram & PCB Design Mon, 04 Jul 2016 14:58:48 +0000 hourly 1 https://electronicscheme.net/car-parking-guard-based-ir-sensor/#comment-227789 Mon, 04 Jul 2016 14:58:48 +0000 http://electronicscheme.net/?p=2740#comment-227789 What is the range of photo Darlington transistor used in this circuit

]]> https://electronicscheme.net/car-parking-guard-based-ir-sensor/#comment-202524 Sun, 11 Oct 2015 03:16:17 +0000 http://electronicscheme.net/?p=2740#comment-202524 what was the purpose of the lamp DS1??

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