Buzz
Electric razors have an interesting connection to electric screwdrivers! When you disassemble a razor, here's what you’ll find:
- A rechargeable battery
- A power switch
- An electric motor
- A gear mechanism
- The sharp blades responsible for trimming the whiskers
This is the razor we will be examining today:
Upon removing the cover, you’ll notice the components arranged in a highly compact design:
The batteries and motor are integrated into one unit, and they can be easily removed. In this image, you can also spot the switch located inside the front cover:
Printed Circuit Board
The batteries are securely attached to the printed circuit board, which also houses the charging system, the switch contacts, and the motor controller. A printed circuit board is a thin sheet of fiberglass with copper wiring etched onto its surface (we also observed a PCB in the remote control we dismantled).
There is an additional, very small auxiliary PCB that contains two LEDs. These LEDs signal when the battery requires recharging, when the razor is powered on, or when the razor is in the process of recharging.
At the razor’s business end, you’ll find three rotating blades. These blades are mounted on three shafts, each of which connects directly to the motor's gear in a direct-drive configuration.
