To: High Voltage list Subject: Re: Switch-mode supply for bug zapper (fwd) You want the components for the steel you intend to use. Differing kinds have different losses. You acquire this from the mfgr. Digi-Key has some cheap 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 nice for this application. The current will burn them right up. The fly hits the IR beam on the 1/2 mid-manner level which energizes a small grid in every route. The midpoint has a piece 2 inches lengthy with no grid. They grow to be trapped and cannot exit either path with out getting zapped. You might also use a 600 Ohm to 10K audio xmfr. They make nice 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 the fly. The charging cycle occurs every 5 minutes and is controlled by a 555 IC chip --- a small relay controls the power part. You place sugar crystals in the tube and at the top of the tube use a small glass check tube so you'll be able to see your accumulated flies to adjust the time intervals. The flies will accumulate and then attempt to go out the charged grid section. The one now we have makes use of a traditional laminated iron, 50Hz transformer. I'd like, so I'm looking at making a switchmode version. 2) Ditto for sizing the parts for the snubber. HV rectification and that I'd need a string of high-speed diodes.

Dynatrap makes insect traps that work on the same precept as others. They appeal to flying bugs with warmth and carbon dioxide, then catch them and stop them from escaping. For warmth, they use a fluorescent ultra-violet bulb, which additionally 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 under. Since they don’t use propane, Zappify official website that means no want to buy and alter cylinders, and best of all, no maintenance problems with clogged lines or failure of the propane to gentle-points that trouble many different traps. You still need to plug them in, so you’ll want an outdoor outlet and an extension cord if you need dangle the trap more than 7-10 feet from the outlet. The DT2000XL model is costlier than the DT1000 mannequin, but it’s larger, with a stronger fan and brilliant gentle, and Zappify official website might entice bugs from farther away, Zappify official website with protection up to an acre for the DT2000XL and Zappify official website a half-acre for the DT1000, according to the manufacturer.

If you’ve definitely decided not to purchase a propane mosquito zapper entice, that is the following neatest thing. I’ll listing the pros and cons of the two models together, as a result of they’re related. Its preliminary value is cheaper than propane traps. It doesn’t require the trouble and expense of changing propane tanks. It catches other bugs in addition to mosquitoes, though that’s not at all times good if they’re beneficial ones. You should 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 environment, because it makes use of no insecticides. The big one: it doesn’t necessarily kill mosquitoes particularly, so you could get more moths or other things instead. You’ll need to mount it about 5 to six toes off the bottom. One mannequin, the DT1200, comes with its own hanger, but otherwise, it wants a tree branch, post, wall, fence, and Zappify official website so on. to grasp or sit on.

If you employ it outdoors, it might have some rain shelter to stop water from stepping into the gathering space. 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 efficient amount of CO2 has been questioned. Like all traps, it needs placed in a very good location, shady and sheltered, the place mosquitoes can find it, but not the place 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 different insects, notably moths at night time. 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, light and warmth are simply two of the things that entice mosquitoes, since what they’re mainly looking for are folks to chunk.

Carbon dioxide is what they really search, since we and different animals emit it once we exhale. Mosquitoes know that in the event that they observe that vapor path, there will probably be a tasty animal on the opposite finish, able to be bitten. To produce 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 reaction takes place that produces carbon dioxide." That is the method it makes use of, Zappify official website instead of burning propane like other traps. However, when the University of Wisconsin tried to measure the amount of carbon dioxide emitted, they reported that they detected none in any respect. One reviewer identified that the TiO2 surface would want coated with a source of carbon, like dust or dead bugs, to ensure that the process to make carbon dioxide. See the review right here (scroll down to Dr. Marsteller’s comment).