Re: Switch-mode Supply For Bug Zapper Fwd
To: High Voltage list Subject: Re: Switch-mode supply for Zappify Bug Zapper official zapper (fwd) You want the elements for the steel you intend to use. Differing types have completely different losses. You get hold of 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, buy Zappify Bug Zapper zapper and Zappify Bug Zapper official 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 proper up. The fly hits the IR beam at the 1/2 mid-way level which energizes a small grid in every path. The midpoint has a bit 2 inches lengthy with no grid. They become trapped and cannot exit either course without 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 could additionally charge a cap rectified with a 1/2 wave diode in a short while interval. Then the charged cap waits for the fly zapper. The charging cycle occurs each 5 minutes and is controlled by a 555 IC chip --- a small relay controls the facility part. You set 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 intervals. The flies will accumulate after which attempt to exit the charged grid section. The one we have now uses a conventional laminated iron, 50Hz transformer. I'd like, so I'm taking a look at making a switchmode version. 2) Ditto for sizing the parts for the snubber. HV rectification and that I'd need a string of excessive-speed diodes.
Dynatrap makes insect zapper traps that work on the identical precept as others. They attract 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 also emits portable bug zapper-attracting light. The primary distinction is that they don’t use propane to create carbon dioxide (CO2). Instead, they use a particular process. More on that below. Since they don’t use propane, which means no want to purchase and alter cylinders, and best bug zapper of all, no upkeep problems with clogged lines or failure of the propane to gentle-points that hassle many other traps. You continue to have to plug them in, so you’ll want an outside outlet and an extension cord if you would like cling the trap greater than 7-10 ft from the outlet. The DT2000XL mannequin is costlier than the DT1000 mannequin, however it’s greater, with a stronger fan and brilliant gentle, and might entice bugs from farther away, with coverage up to 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 lure, that is the subsequent smartest thing. I’ll listing the pros and cons of the two fashions collectively, as a result of they’re similar. Its initial price is cheaper than propane traps. It doesn’t require the problem and expense of changing propane tanks. It catches other bugs apart from 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 protected for pets, kids and the environment, since it makes use of no insecticides. The large one: it doesn’t necessarily kill mosquitoes specifically, so you could get more moths or other issues as a substitute. You’ll need to mount it about 5 to 6 feet off the bottom. One mannequin, the DT1200, comes with its own hanger, but in any other case, it wants a tree department, post, wall, fence, and so on. to dangle or sit on.
If you employ it outdoors, it might have some rain shelter to prevent water from entering into the collecting space. It wants an outlet 7-10 feet away or an extension cord. It’s tricky to empty with out letting some bugs escape. The claim that it emits an efficient amount of CO2 has been questioned. Like all traps, it wants placed in an excellent location, shady and sheltered, the place mosquitoes can find it, but not the place you’ll be bothered by them. The lights in the top of the entice emit warmth and ultraviolet rays, which appeal to mosquitoes as well as other insects, particularly moths at night. 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 under, where they’re unable to flee and die within a day. Unfortunately, light and warmth are just two of the things that attract mosquitoes, since what they’re mainly searching for are individuals to chew.
Carbon dioxide is what they really search, since we and different animals emit it when we exhale. Mosquitoes know that in the event that they follow that vapor path, there might be a tasty animal on the opposite 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 manufacturer claims that when the ultraviolet light reacts with the TiO2, "a photocatalytic reaction takes place that produces carbon dioxide." That is the process 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 want coated with a supply of carbon, like mud or useless bugs, in order for the method to make carbon dioxide. See the evaluation right here (scroll right down to Dr. Marsteller’s remark).
