To: High Voltage record Subject: Re: Switch-mode provide for bug zapper (fwd) You need the elements for the steel you intend to make use of. Different types have completely different losses. You receive 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, 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 right up. The fly hits the IR beam on the 1/2 mid-method point which energizes a small grid in each path. The midpoint has a piece 2 inches lengthy with no grid. They become trapped and can't exit both path without getting zapped. You could 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 time interval. Then the charged cap waits for the fly. The charging cycle happens each 5 minutes and is managed by a 555 IC chip --- a small relay controls the power part. You place sugar crystals within the tube and at the tip of the tube use a small glass test tube so you possibly can see your accumulated flies to regulate the time periods. The flies will accumulate after which try to go out the charged grid section. The one we have now makes use of a traditional laminated iron, 50Hz transformer. I'd like, ZapZone Defender so I'm looking at making a switchmode version. 2) Ditto for sizing the elements for the snubber. HV rectification and that I'd need a string of high-pace 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 additionally emits bug-attracting light. 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 below. Since they don’t use propane, that means no need to buy and alter cylinders, and best of all, ZapZone Defender no upkeep issues with clogged strains or failure of the propane to gentle-issues that hassle many other traps. You continue to have to plug them in, so you’ll need an outdoor outlet and an extension cord if you need dangle the trap greater than 7-10 feet from the outlet. The DT2000XL mannequin is dearer than the DT1000 model, however it’s bigger, ZapZone Defender with a stronger fan and brilliant gentle, and might appeal to bugs from farther away, with protection up to an acre for Zap Zone Defender Device the DT2000XL and a half-acre for the DT1000, in response to the producer.
If you’ve positively determined not to buy a propane mosquito trap, this is the following neatest thing. I’ll checklist the pros and cons of the 2 fashions collectively, as a result of they’re related. Its preliminary price is cheaper than propane traps. It doesn’t require the problem and expense of changing propane tanks. It catches different bugs moreover mosquitoes, although that’s not all the time good if they’re beneficial ones. You should use it indoors or outdoors. The one sound is the quiet humming of the fan and there’s no odor. It’s protected for pets, kids and the environment, because it uses no insecticides. The big one: it doesn’t essentially kill mosquitoes specifically, so it's possible you'll get more moths or different things instead. You’ll have to mount it about 5 to 6 feet off the ground. One mannequin, the DT1200, comes with its own hanger, but otherwise, it needs a tree department, post, wall, fence, etc. to hang or sit on.
If you utilize it outdoors, it might have some rain shelter to stop water from entering into the gathering area. It wants an outlet 7-10 feet away or an extension cord. It’s tricky to empty without letting some bugs escape. The claim that it emits an effective amount of CO2 has been questioned. Like all traps, it needs positioned in a great location, shady and sheltered, the place mosquitoes can discover it, but not the place you’ll be bothered by them. The lights in the top of the trap emit warmth and ultraviolet rays, which appeal to mosquitoes in addition to other insects, significantly 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 under, where they’re unable to flee and die within a day. Unfortunately, mild and warmth are simply two of the issues that attract mosquitoes, since what they’re primarily searching for are people to chew.
Carbon dioxide is what they actually seek, since we and other animals emit it once we exhale. Mosquitoes know that in the event that they follow that vapor trail, there will likely be a tasty animal on the other finish, ready to be bitten. To provide carbon dioxide, the Dynatrap makes use of a broad sort 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." That is the method it makes use of, as an alternative 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 identified that the TiO2 floor would wish coated with a source of carbon, like mud or dead bugs, to ensure that the process to make carbon dioxide. See the overview right here (scroll all the way down to Dr. Marsteller’s remark).