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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 70,858 of 72,318   
   Look165 to All   
   Re: component identification please   
   27 Dec 18 22:20:15   
   
   From: look165@numericable.fr   
      
   Just put a .jpg as attached file.   
      
   Look165 a écrit le 27/12/2018 à 18:36 :   
   > Try to test with ohm-meter ; but ways   
   >   
   > According to description, it seems to be the old OA something (Ge   
   > diodes), so 0.3V drop out and the diode-meter doesn't understand (it   
   > never met such a component).   
   > If you remove the black paint, you surely will see a cristal with a   
   > "s" connected to.   
   > Take care, after removal of the black paint, the semiconductor behaves   
   > as photosensitive.   
   >   
   > Can you post a pix ?   
   >   
   > stevwolf58@gmail.com a écrit le 27/12/2018 à 17:48 :   
   >> I have searched google but cant identify these two components.   
   >>   
   >> I think they are Diodes. they look like Diodes, Black with two   
   >> conductors at either end.   
   >>   
   >> 1 Says D1, only this. It has a two symbols on it that are printed at   
   >> one end that are repeated around the circumference of the component   
   >> that is mayb 1/8 of and inch thick. It is two solid triangles    
   >> repeated around the end.   
   >>   
   >> E.G. /\ \/ /\ \/ etc.   
   >>   
   >> When I put my volt meter on it, assuming that it is a diode and   
   >> setting my meter to Diode test I get nothing. There are about 4 of   
   >> them. So I doubt they are all blown if at all. There is no result no   
   >> matter which way I put the polarity.   
   >>   
   >> The Second component also looks like a diode. It is also in the row   
   >> that has the above components in them.   
   >>   
   >> It has sort of a chevron around one end. Repeated in circumference. E.G.   
   >> <==<  <==< . The only identifying mark apears to be the number 22 on it.   
   >>   
   >> I tried testing this also but no luck on diode setting.   
   >>   
   >> Any ideas.   
   >>   
   >> Perhaps if they are diodes the meter does not have enough to get it   
   >> moving forward. I believe many diodes use about .6 v. before working.   
   >> I assume that is what the meter is putting out?   
   >>   
   >> Thank you.   
   >>   
   >   
      
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