2.45GHz to 2.85GHz VCO Design with Infineon BFP420 Wideband Silicon NPN RF Bipolar Transistor
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Part I: Sonicare Electric Toothbrush Architecture Figure 1: Sonicare Electric Toothbrush Architecture This electric toothbrush is a water-resistant design, thus it adopts wireless charging technology. Coil 2 is the wireless charging receiver. A permanent magnet is attached to the trail of the toothbrush head, therefore toothbrush head will be oscillated if the permanent magnet is
Philips Sonicare Electric Toothbrush Measurements without Teardown Read More »