From: scientist77017@gmail.com   
      
   On Saturday, May 18, 2019 at 12:18:45 PM UTC-5, default wrote:   
   > On Sat, 18 May 2019 09:52:29 -0700 (PDT), AK   
   >  wrote:   
   >    
   > >I am trying to find info about what a low leakage capacitor is.   
   > >   
   > >I read that aluminum electrolytic caps have a higher leakage rate than most   
   other types.   
   > >   
   > >How do you determine if a capacitor is low leakage?   
   >    
   > How fast does it lose it's charge just sitting there?   
   > >   
   > >I was looking at this one.   
   > >   
   > >0.1礔 250 Volt 10% Metallized Film Capacitor Axial   
   > >Specifications   
   > >   
   > >    Capacitance: 100000 pF / 100 nF / 0.1礔   
   > >    Voltage rating: 250 VDC   
   > >    Tolerance: �   
   > >    Size: 14mm x 8.5mm x 4.5mm (W x H x D)   
   > >    Axial leads   
   >    
   > Metal film caps are all low leakage compared to electrolytics. There's   
   > something else call "dissipation factor" that only comes into play at   
   > some AC frequencies (how much power the dielectric wastes as heat).   
   >    
   > What you are doing is low frequency and the capacitors aren't   
   > critical.   
      
   Ok.    
      
   Thanks. I field tested my circuit on my patio.   
      
   Without the laser, ambient light is enough to keep buzzer off.   
      
   I passed my hand over the LDR from about a foot away and it sounded.   
      
   But it won't work from about 6 feet away which is about the range I need.   
      
   So it looks like even with a laser shining and someone breaks the beam, it may   
   not sound if the light level is high enough.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)