Remote tester circuit also resembles the logic of a “dark sensor (using BC557)”. LDR has been replaced with IR sensor TSOP 1738. The circuit works as a remote tester. Pressing a remote control switch near the IR sensor, switches on the LED D2.


Please note that these two schematics are independent.

Download datasheet

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  1. Le agradesco los multples esquemas ,Ahrra es tarde o temprano pero cuando vueva
    me regiistrare y vere más cosas

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