Added: Daniell Moorhouse - Date: 22.10.2021 20:48 - Views: 37107 - Clicks: 6437
Electric fly swatters aka zapper rackets are a cheap and easy way to get a high voltage power supply for some fun experiments. I've used one for powering a Franklin's bell as well as just making sparks. The photo below shows that the round part consists of three meshes, spaced apart.
The two outer meshes are electrically connected together, but there is a high voltage between the outer meshes and the middle mesh. If a fly get's in between these meshes while the electric fly swatter is turned on then it gets zapped by a spark, killing it.
You can also see these three meshes in the photo further below of the fly swatter opened up. Also below you can see measuring the high voltage between one of the outer meshes and the middle mesh using a high voltage probe and an oscilloscope.
The voltage is around volts. Below you can see it opened up. The circuit is a blocking oscillator circuit, also known as a joule thief circuit. Here I've used this electric fly swatter to power a compact fluorescent lightbulb CFL with minimal modifications. The following video shows it in action powering a Franklin's bell and making sparks. It also includes taking it apart and some discussion of the circuit explaining how it works. Making a spark with screw driver. Powering Franklin's bell.
The three meshes. The measuring setup. Showing volts. The electric fly swatter opened up. Electric fly swatter schematic. What an electric fly swatter can do Here I've used this electric fly swatter to power a compact fluorescent lightbulb CFL with minimal modifications. Liked this? Share it with:.How do electric fly swatters work
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Electric fly swatter/zapper racket as high voltage source