Re: Switch-mode Supply For Bug Zapper Fwd
To: High Voltage record Subject: Re: Switch-mode provide for bug zapper (fwd) You want the factors for the steel you intend to use. Differing types have 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, patio insect zapper and then, he triggers the IR beam which controls the zapper. A small single ended NST works great for this utility. The current will burn them proper 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 bit 2 inches lengthy with no grid. They grow to be trapped and can't exit either path 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 short, like 1-2 sec, they might additionally charge 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 each 5 minutes and is managed by a 555 IC chip --- a small relay controls the power part. You put sugar crystals within the tube and at the tip of the tube use a small glass take a look at tube so you can see your accumulated flies to regulate the time periods. The flies will accumulate after which try to exit the charged grid section. The one we've got uses a conventional laminated iron, patio insect zapper 50Hz transformer. I'd like, so I'm looking at making a switchmode model. 2) Ditto for sizing the elements for the snubber. HV rectification and patio insect zapper that I'd want a string of excessive-speed diodes.
Dynatrap makes patio insect zapper traps that work on the identical principle as others. They entice flying bugs with warmth and Zap Zone Defender carbon dioxide, then catch them and forestall them from escaping. For warmth, they use a fluorescent extremely-violet bulb, 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 under. Since they don’t use propane, which means no need to purchase and change cylinders, and best of all, no maintenance issues with clogged strains or failure of the propane to gentle-points that trouble many different traps. You continue to need to plug them in, so you’ll want an outdoor outlet and an extension cord if you need hang the lure more than 7-10 feet from the outlet. The DT2000XL model is dearer than the DT1000 model, but it’s greater, with a stronger fan and vibrant mild, and may appeal to bugs from farther away, with protection up to an acre for the DT2000XL and a half-acre for the DT1000, based on the manufacturer.
If you’ve undoubtedly decided not to purchase a propane mosquito trap, that is the subsequent best thing. I’ll listing the pros and cons of the 2 models together, as a result of they’re comparable. Its preliminary value is cheaper than propane traps. It doesn’t require the problem and expense of replacing propane tanks. It catches other bugs besides mosquitoes, though that’s not always good if they’re helpful 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 secure for pets, children and the environment, since it uses no insecticides. The massive one: it doesn’t essentially kill mosquitoes particularly, so you could get more moths or different issues as an alternative. You’ll must mount it about 5 to six ft off the bottom. One mannequin, the DT1200, comes with its own hanger, but otherwise, it wants a tree branch, submit, wall, fence, and many others. to dangle or sit on.
If you use it outdoors, it might have some rain shelter to prevent water from entering into the collecting space. It wants an outlet 7-10 ft away or an extension cord. It’s tough to empty without letting some bugs escape. The claim that it emits an efficient amount of CO2 has been questioned. Like all traps, patio insect zapper it needs placed in a very good location, shady and sheltered, where mosquitoes can discover it, but not the place you’ll be bothered by them. The lights in the highest of the lure emit warmth and ultraviolet rays, which entice mosquitoes as well as other insects, notably moths at night. There are openings under the lights where bugs can fly in. Once inside, they’re sucked down by the fan’s air currents into the retaining cage beneath, Zap Zone Defender where they’re unable to flee and die within a day. Unfortunately, mild and warmth are just two of the things that attract mosquitoes, since what they’re primarily looking for are folks to chunk.
Carbon dioxide is what they really search, since we and other animals emit it once we exhale. Mosquitoes know that in the event that they observe that vapor trail, there will probably be a tasty animal on the other end, ready to be bitten. To provide 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 gentle reacts with the TiO2, "a photocatalytic reaction takes place that produces carbon dioxide." This is the method it uses, 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 identified that the TiO2 floor would wish coated with a source of carbon, like mud or useless bugs, to ensure that the method to make carbon dioxide. See the assessment here (scroll right down to Dr. Marsteller’s comment).