To: High Voltage record Subject: Re: Switch-mode provide for bug zapper (fwd) You need the elements for the steel you intend to use. Differing kinds have different losses. You obtain this from the mfgr. Digi-Key has some inexpensive IR sort emitters & detectors. Have the fly crawl a distance, ZapZone Defender 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 great for this application. The current will burn them right up. The fly hits the IR beam at the 1/2 mid-approach level which energizes a small grid in each course. The midpoint has a piece 2 inches lengthy with no grid. They develop into trapped and can't exit both route without getting zapped. You would also use a 600 Ohm to 10K audio xmfr. They make nice HV sparks working in a pulsed mode. If the time duration is short, like 1-2 sec, ZapZone Defender they could also cost 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 occurs each 5 minutes and is controlled by a 555 IC chip --- a small relay controls the ability section. You place sugar crystals in the tube and at the end of the tube use a small glass check tube so you can see your accumulated flies to regulate the time periods. The flies will accumulate after which attempt to exit the charged grid part. The one now we have uses a traditional laminated iron, 50Hz transformer. I'd like, so I'm looking at making a switchmode version. 2) Ditto for sizing the elements for the snubber. HV rectification and that I'd want a string of high-speed diodes.

Dynatrap makes insect traps that work on the same precept as others. They attract flying bugs with warmth and carbon dioxide, ZapZone Defender then catch them and forestall them from escaping. For warmth, they use a fluorescent extremely-violet bulb, which also emits bug-attracting light. The main difference is that they don’t use propane to create carbon dioxide (CO2). Instead, they use a particular course of. More on that under. Since they don’t use propane, which means no want to buy and Defender by Zap Zone change cylinders, and best of all, no maintenance issues with clogged lines or failure of the propane to mild-issues that hassle many different traps. You still have to plug them in, so you’ll want an outdoor outlet and an extension cord if you want dangle the lure greater than 7-10 ft from the outlet. The DT2000XL model is more expensive than the DT1000 mannequin, however it’s bigger, with a stronger fan and vivid mild, and Zap Zone Defender Device might attract bugs from farther away, with protection as much as an acre for the DT2000XL and a half-acre for the DT1000, in accordance with the producer.

If you’ve undoubtedly determined not to purchase a propane mosquito lure, this is the subsequent best thing. I’ll checklist the pros and cons of the two fashions collectively, as a result of they’re comparable. Its initial value is cheaper than propane traps. It doesn’t require the trouble and expense of changing propane tanks. It catches other bugs moreover mosquitoes, although that’s not all the time good if they’re helpful ones. You can use it indoors or outdoors. The only sound is the quiet humming of the fan and there’s no odor. It’s safe for pets, children and the surroundings, because it makes use of no insecticides. The big one: it doesn’t necessarily kill mosquitoes specifically, so it's possible you'll get more moths or other issues as a substitute. You’ll have to mount it about 5 to six toes off the bottom. One mannequin, the DT1200, comes with its personal hanger, however otherwise, it wants a tree branch, put up, wall, fence, and ZapZone Defender many others. to hang or sit on.

If you use it outdoors, it may have some rain shelter to stop water from stepping into the amassing area. It needs an outlet 7-10 feet away or an extension cord. It’s difficult to empty without letting some bugs escape. The claim that it emits an effective quantity of CO2 has been questioned. Like all traps, it wants positioned in a good location, shady and sheltered, where mosquitoes can find it, however not where you’ll be bothered by them. The lights in the highest of the entice emit warmth and ultraviolet rays, which attract mosquitoes in addition to different insects, notably moths at night time. 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 beneath, where they’re unable to escape and die within a day. Unfortunately, gentle and warmth are simply two of the things that attract mosquitoes, since what they’re mainly searching for are individuals to bite.

Carbon dioxide is what they actually search, since we and other animals emit it when we exhale. Mosquitoes know that if they comply with that vapor path, there will probably be a tasty animal on the opposite finish, ready to be bitten. To supply carbon dioxide, the Dynatrap uses a broad type of funnel above the fan, coated with titanium dioxide (TiO2). The producer 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, as a substitute 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 at all. One reviewer identified that the TiO2 floor would wish coated with a supply of carbon, like mud or useless bugs, in order for the process to make carbon dioxide. See the overview here (scroll down to Dr. Marsteller’s comment).