XPost: sci.electronics.design   
   From: erichpwagner@hotmail.com   
      
   On 16/04/2019 09:27, Terry Pinnell wrote:   
   > default  wrote:   
   >   
   >> I'd isolate the signal from the input to the CMOS gate....use relays   
   >   
   > Although having some negative practical downsides (like discarding the   
   > case for a larger one) I might try that. I assume you simply mean taking   
   > the noise-prone input to an NPN transistor driving a relay which then   
   > switches +V (or a fraction of it) to the original relay driver? A sort   
   > of mechanical, slower echo of the original?   
   >   
      
   Don't use a relay to directly clock the 4013 because the relay contacts   
   will have bounce and cause multiple triggers so you'd be no better off   
   as you'd need to clean up the relay contact bounce.   
      
   I think the suggestion was to use relays throughout, as in:   
      
      
      
   piglet   
      
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