I had an electric mosquito swatter lying around so I decided to open it up and check out how it works.
I understood some parts of the circuit however I did not clearly understand how the rest of it works.
I have posted the circuit of the mosquito swatter. (I did notice that there was a similar question on the forum but the circuitry differed and it was not yet solved.)
Here's the circuit:
Things I did not get:
- Why did they use the capacitor and resistor in parallel as input for the full bridge rectifier?
- Why is the battery just directly connected to the output of the full bridge rectifier.
- How is the (6-pin) transformer connected internally? If I can understand this I am guessing I can understand how the transistor works.
- What is the configuration at the output of the transformer?
- Below the main circuit there is a diagram that shows the interconnection between the transformer pins when I used a multi-meter to check for continuity, note the transformer was still on the pcb.
- The 0 and 1 at the output is just to indicate that the 0 goes to outer 2 meshes and 1 goes to inner mesh.
- The LEDs are red.
- Some of the components did not have values written on them like the capacitor C6 so I removed them and checked them using a component tester so the values may be slightly off the standard values.
- I numbered C6 out of order sorry about that.
- The resistor parallel to C1 is 675kOhm and not 675Ohm.
- The resistance between Xmer pins 1-2: 2 Ohm; 3-6: 0.8 Ohm; 4-5: 245 Ohm.
Additional working note:
When the device is not charging the NO switch is closed and the push button is pressed this seems to charge the meshes for the next electric swat.