Originally posted by gotoluc
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Though I replied to you on the above topic about half an hour later after you had asked you did not build it with the light sensitive resistor but the reed switch. Probably I should have drawn a schematic too but was in a hurry then.
Here is an optical switch schematic from Naudin in the middle of this link and any type of opto coupler can be used. (Of course the generator idea is ALSO worth studying
2SGen, an amazing tiny Solid State Generator by JL Naudin
Some info on opto-isolators (optocouplers) : Opto-isolators In the schematics shown the OUT pin can go directly to a power MOSFET gate and the common negative to the source of the MOSFET. At the bottom of the link some manufacturers link is included to their opto devices.
rgds, Gyula
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