Connecting capacitor and Diode

[nealcafrrey37]

What is the reason for connecting Diode across Capacitor?

 

[duke37]

Give us the complete circuit and we might be able to answer.

 

[nealcafrrey37]

I am trying to make an Fly Zapper circuit. Can you help me with the least complicated circuit possible and with how to implement it?

 

[Laplace]

A capacitor/diode voltage multiplier circuit?

See the application note: www.vishay.com/docs/88842/anusingr.pdf