NEW - Aspectek Indoor Insect Killer Model HR292 - Product Review - bug zapper - bug killer

ASPECTEK Powerful 20W Electronic Indoor Insect Killer, Bug Zapper, Fly Zapper, Mosquito Killer-Indoor Use Including Free 2 Pack Replacement Bulbs. How Does it Work ? This indoor device is designed to lure flies, mosquitoes and other annoying insect pests to the grid where they will be immediately zapped. It ships with two ultraviolet bulbs which are especially designed to attract flying insects. A protective guard prevents people and pets from accidentally touching the grid.

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Insect repellents are used to repel mosquitoes, ticks, flies, and other biting insects. Mosquitoes can transmit diseases such as Zika, Malaria, and West Nile virus. Ticks can transmit Lyme disease, Rocky Mountain Spotted Fever, and other diseases.

A bug zapper, more formally called an electrical discharge insect control system, electric insect killer or (insect) electrocution trap, is a device that attracts and kills flying insects that are attracted by light. A light source attracts insects to an electrical grid, where they are electrocuted by touching two wires with a high voltage between them. The name comes from the characteristic onomatopoeic zap sound produced when an insect is electrocuted.

According to Wikipedia:

In its October 1911 issue, Popular Mechanics magazine had a piece showing a model "fly trap" that used all the elements of a modern bug zapper, including electric light and electrified grid. The design was implemented by two unnamed Denver men and was conceded to be too expensive to be of practical use. The device was 10 by 15 inches (25 by 38 cm), contained 5 incandescent light bulbs, and the grid was 1⁄16-inch (1.59 mm) wires spaced 1⁄8-inch (3.17 mm) apart with a voltage of 450 volts. Users were supposed to bait the interior with meat.

According to the US Patent and Trademark Office, the first bug zapper was patented in 1932 by William M. Frost.

Separately, William Brodbeck Herms (1876–1949), a professor of parasitology at the University of California, had been working on large commercial insect traps for over 20 years for the protection of California's important fruit industry. In 1934 he introduced the electronic insect killer that became the model for all future bug zappers.

Bug zappers are usually housed in a protective cage of plastic or grounded metal bars to prevent people or larger animals from touching the high voltage grid. A light source is fitted inside, often a fluorescent lamp designed to emit both visible and ultraviolet light, which is visible to insects and attracts a variety of them. The light is surrounded by a pair of interleaved bare wire grids or spirals. The distance between adjacent wires is typically about 2 mm (0.079 in). A high-voltage power supply powered by wall power is used, which may be a simple transformerless voltage multiplier circuit made with diodes and capacitors which can generate a voltage of 2 kilovolts or more. This is high enough to conduct through the body of an insect which bridges the two grids, but not high enough to spark across the air gap. Enough electric current flows through the small body of the insect to heat it to a high temperature. The impedance of the power supply and the arrangement of the grid is such that it cannot drive a dangerous current through the body of a human.

Many bug zappers are fitted with trays that collect the electrocuted insects; other models are designed to allow the debris to fall to the ground below. Some use a fan to help to trap the insect.

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