To: High Voltage listing Subject: Re: Switch-mode supply for bug zapper (fwd) You want the elements for the steel you intend to make use of. Differing types have completely different losses. You get hold of this from the mfgr. Digi-Key has some inexpensive IR kind emitters & detectors. Have the fly crawl a distance, like 4-6 inches inside the tube, after which, he triggers the IR beam which controls the indoor-outdoor zapper. A small single ended NST works great for this application. The current will burn them right up. The fly hits the IR beam on the 1/2 mid-method level which energizes a small grid in each route. The midpoint has a piece 2 inches lengthy with no grid. They become trapped and cannot exit either route with out getting zapped. You could additionally use a 600 Ohm to 10K audio xmfr. They make good HV sparks operating in a pulsed mode. If the time duration is short, like 1-2 sec, they could also charge a cap rectified with a 1/2 wave diode in a short time period. Then the charged cap waits for the fly. The charging cycle occurs every 5 minutes and is managed by a 555 IC chip --- a small relay controls the facility section. You place sugar crystals in the tube and at the end of the tube use a small glass take a look at tube so you possibly can see your accumulated flies to adjust the time intervals. The flies will accumulate and then try to go out the charged grid section. The one we now have uses a standard 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 need a string of excessive-speed diodes.

Dynatrap makes insect traps that work on the identical principle 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 extremely-violet bulb, which additionally 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 beneath. Since they don’t use propane, which means no need to buy and change cylinders, Defender by Zap Zone and better of all, no upkeep problems with clogged lines or failure of the propane to mild-issues that bother many other traps. You continue to need to plug them in, so you’ll want an outside outlet and an extension cord in order for you dangle the entice greater than 7-10 ft from the outlet. The DT2000XL mannequin is more expensive than the DT1000 model, but it’s larger, with a stronger fan and brilliant mild, and can appeal to bugs from farther away, with coverage up to an acre for the DT2000XL and a half-acre for the DT1000, according to the manufacturer.

If you’ve definitely determined not to purchase a propane mosquito entice, that is the next smartest thing. I’ll checklist the pros and cons of the 2 models together, as a result of they’re similar. Its preliminary price is cheaper than propane traps. It doesn’t require the hassle and expense of replacing propane tanks. It catches different bugs apart from mosquitoes, though that’s not always good if they’re useful ones. You need to use it indoors or outdoors. The one sound is the quiet humming of the fan and there’s no odor. It’s protected for pets, children and the surroundings, indoor-outdoor zapper since it makes use of no insecticides. The large one: it doesn’t essentially kill mosquitoes particularly, so you may get more moths or different issues as a substitute. You’ll have to mount it about 5 to six ft off the bottom. One mannequin, the DT1200, comes with its own hanger, however in any other case, it needs a tree department, submit, ZapZone Defender wall, fence, and many others. to dangle or indoor-outdoor zapper sit on.

If you utilize it outdoors, it might have some rain shelter to forestall water from entering into the gathering space. It wants an outlet 7-10 toes 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 needs placed in a superb location, shady and sheltered, where mosquitoes can find it, but 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 evening. There are openings beneath 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, the place they’re unable to escape and die inside a day. Unfortunately, gentle and warmth are just two of the things that appeal to mosquitoes, since what they’re primarily in search of are individuals to chew.

Carbon dioxide is what they really seek, since we and different animals emit it once we exhale. Mosquitoes know that in the event that they comply with that vapor trail, there can be a tasty animal on the other end, ready to be bitten. To supply 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 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 in any respect. One reviewer pointed out that the TiO2 surface would wish coated with a source of carbon, like mud or lifeless bugs, in order for the method to make carbon dioxide. See the assessment right here (scroll down to Dr. Marsteller’s comment).