Hi,
I have seen these "new" bug zappers formed like a tennis racquet on sale lately and I am trying to figure out (without having opened one) how they are working.
They are powered by 2 * 1,5 V batteries. This dc voltage is transformed into an ac-signal (inverter) and used to charge a big capacitor (perhaps with some kind of voltage multiplier in between). When a bug short-circuits the wires on the racquet the energy in the capacitor is discharged through it and it dies.
Am I on the right track or do I have to buy one and look inside? :)
Best regards, Kim.