Re: Switch-mode Supply For Bug Zapper Fwd

To: High Voltage checklist Subject: Re: Switch-mode provide for bug zapper (fwd) You need the components for the steel you intend to use. Differing types have totally different losses. You obtain this from the mfgr. Digi-Key has some inexpensive IR sort 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 great for this software. The current will burn them right up. The fly hits the IR beam at the 1/2 mid-means level which energizes a small grid in every course. The midpoint has a section 2 inches lengthy with no grid. They develop into trapped and cannot exit either direction with out getting zapped. You possibly can additionally 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 cost 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 happens every 5 minutes and is controlled by a 555 IC chip --- a small relay controls the facility section. You put sugar crystals within the tube and at the tip of the tube use a small glass test tube so you'll be able to see your accumulated flies to regulate the time periods. The flies will accumulate and then try to exit the charged grid section. The one now we have uses 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 that I'd want a string of excessive-speed diodes.



Dynatrap makes insect traps that work on the identical principle as others. They entice flying bugs with warmth and patio insect zapper carbon dioxide, then catch them and forestall them from escaping. For chemical-free bug control warmth, they use a fluorescent ultra-violet bulb, Zap Zone Defender Experience which also emits bug-attracting mild. The principle distinction 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, meaning no need to buy and change cylinders, and best of all, no maintenance issues with clogged strains or failure of the propane to mild-points that hassle many different traps. You still need to plug them in, so you’ll want an outdoor outlet and an extension cord in order for you grasp the trap more than 7-10 toes from the outlet. The DT2000XL model is more expensive than the DT1000 model, however it’s greater, with a stronger fan and shiny gentle, and may entice bugs from farther away, with coverage as much as an acre for the DT2000XL and a half-acre for the DT1000, in accordance with the manufacturer.



If you’ve definitely decided not to buy a propane mosquito trap, this is the subsequent neatest thing. I’ll list the pros and cons of the 2 fashions together, as a result of they’re similar. Its initial cost is cheaper than propane traps. It doesn’t require the problem and expense of changing propane tanks. It catches other bugs besides mosquitoes, although that’s not all the time 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 safe for pets, kids and the surroundings, because it uses no insecticides. The big one: it doesn’t essentially kill mosquitoes specifically, so chances are you'll get extra moths or other things as a substitute. You’ll need to mount it about 5 to 6 feet off the bottom. One model, the DT1200, comes with its personal hanger, however otherwise, it wants a tree department, post, wall, fence, and so forth. to dangle or sit on.



If you employ it outdoors, it might have some rain shelter to prevent water from stepping into the collecting area. It wants an outlet 7-10 feet away or an extension cord. It’s tough 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 placed in a superb location, shady and sheltered, where mosquitoes can find it, however not the place you’ll be bothered by them. The lights in the highest of the lure emit warmth and ultraviolet rays, which attract mosquitoes in addition to other insects, notably moths at evening. There are openings below 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 escape and die within a day. Unfortunately, gentle and warmth are just two of the things that entice mosquitoes, since what they’re mainly in search of are folks to bite.



Carbon dioxide is what they actually search, since we and other animals emit it after we exhale. Mosquitoes know that if they follow that vapor trail, there can be a tasty animal on the opposite finish, ready to be bitten. To supply carbon dioxide, Zap Zone Defender Experience the Dynatrap uses a broad form of funnel above the fan, coated with titanium dioxide (TiO2). The producer claims that when the ultraviolet gentle reacts with the TiO2, "a photocatalytic response takes place that produces carbon dioxide." That is the method it makes use of, as an alternative 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 identified that the TiO2 floor would want coated with a supply of carbon, like mud or lifeless bugs, in order for the method to make carbon dioxide. See the review here (scroll down to Dr. Marsteller’s remark).