To: High Voltage listing Subject: Re: Switch-mode supply for bug zapper (fwd) You want the elements for the steel you intend to use. Different types have totally different losses. You receive this from the mfgr. Digi-Key has some inexpensive IR kind emitters & detectors. Have the fly crawl a distance, like 4-6 inches contained in the tube, and then, he triggers the IR beam which controls the zapper. A small single ended NST works nice for this utility. The present will burn them proper up. The fly hits the IR beam at the 1/2 mid-means level which energizes a small grid in each direction. The midpoint has a bit 2 inches long with no grid. They grow to be trapped and cannot exit both path with out getting zapped. You might also use a 600 Ohm to 10K audio xmfr. They make good HV sparks working in a pulsed mode. If the time duration is brief, like 1-2 sec, they may also cost a cap rectified with a 1/2 wave diode in a short while period. Then the charged cap waits for Zap Zone Defender System the fly. The charging cycle happens every 5 minutes and is controlled by a 555 IC chip --- a small relay controls the ability section. You put sugar crystals within the tube and at the top of the tube use a small glass check tube so you can see your accumulated flies to regulate the time durations. The flies will accumulate after which try to exit the charged grid part. The one we have now makes use of a standard laminated iron, 50Hz transformer. I'd like, so I'm looking at making a switchmode model. 2) Ditto for sizing the components for the snubber. HV rectification and that I'd want a string of excessive-velocity diodes.

Dynatrap makes insect traps that work on the identical precept as others. They entice flying bugs with warmth and carbon dioxide, then catch them and prevent them from escaping. For warmth, they use a fluorescent extremely-violet bulb, which also emits bug-attracting light. The primary difference is that they don’t use propane to create carbon dioxide (CO2). Instead, they use a particular course of. More on that below. Since they don’t use propane, that means no need to buy and change cylinders, and better of all, no maintenance problems with clogged traces or failure of the propane to mild-points that bother many other traps. You continue to must plug them in, so you’ll want an out of doors outlet and an extension cord in order for you hang the lure greater than 7-10 toes from the outlet. The DT2000XL mannequin is dearer than the DT1000 mannequin, however it’s bigger, with a stronger fan and brilliant gentle, and might attract bugs from farther away, with protection as much as an acre for the DT2000XL and a half-acre for the DT1000, in keeping with the producer.

If you’ve positively determined not to purchase a propane mosquito trap, that is the following smartest thing. I’ll record the pros and cons of the 2 models together, because they’re comparable. Its preliminary price is cheaper than propane traps. It doesn’t require the problem and expense of replacing propane tanks. It catches other bugs moreover mosquitoes, although that’s not at all times good if they’re helpful ones. You need to use it indoors or outdoors. The only sound is the quiet humming of the fan and there’s no odor. It’s protected for pets, children and the setting, since it makes use of no insecticides. The large one: it doesn’t essentially kill mosquitoes specifically, so you may get more moths or other things instead. You’ll need to mount it about 5 to 6 toes off the ground. One mannequin, the DT1200, comes with its own hanger, but in any other case, it needs a tree department, publish, wall, fence, and many others. to hold or sit on.

If you employ it outdoors, it might have some rain shelter to forestall water from getting into the amassing area. It needs an outlet 7-10 ft away or an extension cord. It’s tough to empty with out letting some bugs escape. The claim that it emits an efficient quantity of CO2 has been questioned. Like all traps, it wants placed in a good location, shady and sheltered, the place mosquitoes can discover it, but not where you’ll be bothered by them. The lights in the highest of the trap emit warmth and ultraviolet rays, which entice mosquitoes as well as other insects, significantly moths at evening. There are openings below the lights where bugs can fly in. Once inside, they’re sucked down by the fan’s air currents into the retaining cage below, the place they’re unable to escape and Zap Zone Defender System die inside a day. Unfortunately, light and warmth are simply two of the issues that appeal to mosquitoes, since what they’re mainly searching for are folks to chunk.

Carbon dioxide is what they really seek, since we and different animals emit it after we exhale. Mosquitoes know that in the event that they follow that vapor trail, there might be a tasty animal on the opposite finish, able to be bitten. To produce carbon dioxide, the Dynatrap makes use of a broad sort of funnel above the fan, mosquito zapper coated with titanium dioxide (TiO2). The manufacturer claims that when the ultraviolet light reacts with the TiO2, "a photocatalytic response takes place that produces carbon dioxide." This is the method it uses, instead of burning propane like different traps. However, when the University of Wisconsin tried to measure the quantity of carbon dioxide emitted, they reported that they detected none in any respect. One reviewer pointed out that the TiO2 surface would want coated with a source of carbon, like mud or useless bugs, to ensure that the process to make carbon dioxide. See the review here (scroll down to Dr. Marsteller’s comment).