Re: Switch-mode Supply For Bug Zapper (Fwd)

To: High Voltage listing Subject: Re: Switch-mode provide for bug zapper (fwd) You want the elements for the steel you intend to use. Differing types have different losses. You get hold of this from the mfgr. Digi-Key has some cheap IR kind emitters & detectors. Have the fly crawl a distance, like 4-6 inches inside the tube, after which, he triggers the IR beam which controls the zapper. A small single ended NST works great for this application. The current will burn them proper up. The fly hits the IR beam on the 1/2 mid-means point which energizes a small grid in each path. The midpoint has a section 2 inches long with no grid. They become trapped and can't exit both course without getting zapped. You would also use a 600 Ohm to 10K audio xmfr. They make nice HV sparks operating in a pulsed mode. If the time duration is brief, like 1-2 sec, they might additionally charge a cap rectified with a 1/2 wave diode in a short while interval. Then the charged cap waits for the fly. The charging cycle occurs each 5 minutes and is managed by a 555 IC chip --- a small relay controls the ability part. You set sugar crystals within the tube and at the top of the tube use a small glass take a look at tube so you may see your accumulated flies to regulate the time durations. The flies will accumulate and then attempt to go out the charged grid part. The one we now have uses a standard laminated iron, 50Hz transformer. I'd like, so I'm taking a look at making a switchmode model. 2) Ditto for sizing the elements for the snubber. HV rectification and that I'd need a string of excessive-velocity diodes.