Inside a sonic mosquito repeller. (With schematic.)

I saw this in Poundworld and decided to get one to see what the circuitry was like. It got off to a rocky start with a leaky battery laying waste to the battery contacts and requiring a thorough filing to get it to actually work.
Worth it though, as the circuitry is quite unusual.

If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm