To: High Voltage listing Subject: Re: Switch-mode supply for bug zapper (fwd) You need the factors for the steel you intend to make use of. Differing types have completely different losses. You acquire this from the mfgr. Digi-Key has some inexpensive IR type 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 present will burn them proper up. The fly hits the IR beam on the 1/2 mid-manner point which energizes a small grid in each path. The midpoint has a piece 2 inches long with no grid. They turn into trapped and can't exit either path without getting zapped. You might additionally 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 additionally charge a cap rectified with a 1/2 wave diode in a short while period. 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 put sugar crystals in the tube and at the end of the tube use a small glass test tube so you possibly can see your accumulated flies to regulate the time intervals. The flies will accumulate after which try to go out the charged grid part. The one we have now makes use of a standard laminated iron, 50Hz transformer. I'd like, so I'm taking a look at making a switchmode version. 2) Ditto for sizing the components for the snubber. HV rectification and Zap Zone Defender that I'd want a string of high-velocity diodes.
Dynatrap makes insect traps that work on the identical principle as others. They attract flying bugs with warmth and carbon dioxide, then catch them and forestall them from escaping. For Zap Zone Defender Device warmth, they use a fluorescent ultra-violet bulb, which also emits bug-attracting gentle. The primary difference is that they don’t use propane to create carbon dioxide (CO2). Instead, they use a special course of. More on that beneath. Since they don’t use propane, which means no need to buy and ZapZone Defender alter cylinders, and better of all, no upkeep issues with clogged strains or failure of the propane to gentle-issues that trouble many other traps. You still must plug them in, so you’ll want an out of doors outlet and an extension cord in order for you dangle the trap greater than 7-10 ft from the outlet. The DT2000XL mannequin is dearer than the DT1000 model, however it’s greater, with a stronger fan and brilliant gentle, and might appeal to bugs from farther away, with protection up to an acre for the DT2000XL and a half-acre for the DT1000, in line with the producer.
If you’ve positively determined not to purchase a propane mosquito trap, that is the subsequent best thing. I’ll list the professionals and cons of the 2 models collectively, because they’re comparable. Its preliminary cost is cheaper than propane traps. It doesn’t require the problem and expense of replacing propane tanks. It catches different bugs besides mosquitoes, though that’s not always good if they’re helpful ones. You can use it indoors or outdoors. The one sound is the quiet humming of the fan and there’s no odor. It’s secure for pets, kids and Zap Zone Defender the atmosphere, chemical-free bug control because it uses no insecticides. The massive one: it doesn’t essentially kill mosquitoes particularly, so you may get more moths or different issues instead. You’ll need to mount it about 5 to 6 ft off the bottom. One mannequin, the DT1200, comes with its personal hanger, but otherwise, it needs a tree department, Zap Zone Defender Device submit, wall, fence, and so on. to dangle or sit on.
If you employ it outdoors, it might have some rain shelter to prevent water from getting into the accumulating space. It needs an outlet 7-10 toes away or an extension cord. It’s difficult to empty with out letting some bugs escape. The claim that it emits an effective quantity of CO2 has been questioned. Like all traps, it wants placed in a very good location, shady and sheltered, the place mosquitoes can find it, but not where you’ll be bothered by them. The lights in the highest of the entice emit warmth and ultraviolet rays, which attract mosquitoes as well as different insects, particularly moths at night. There are openings under the lights the place 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 die within a day. Unfortunately, mild and warmth are just two of the things that appeal to mosquitoes, since what they’re mainly searching for are folks to chunk.
Carbon dioxide is what they actually search, Zap Zone Defender Device since we and different animals emit it once we exhale. Mosquitoes know that in the event that they comply with that vapor path, there will be a tasty animal on the other end, able to be bitten. To supply carbon dioxide, the Dynatrap uses a broad kind of funnel above the fan, coated with titanium dioxide (TiO2). The producer claims that when the ultraviolet light reacts with the TiO2, "a photocatalytic reaction takes place that produces carbon dioxide." This is the method it makes use of, as a substitute of burning propane like other traps. However, when the University of Wisconsin tried to measure the quantity of carbon dioxide emitted, they reported that they detected none at all. One reviewer pointed out that the TiO2 floor would wish coated with a supply of carbon, like mud or useless bugs, to ensure that the process to make carbon dioxide. See the review here (scroll all the way down to Dr. Marsteller’s remark).