This article refers to the address: http:// Automatic gain control circuit to improve the listening effect. The TL is an induction coil for a telephone device that is made by winding a few hundred pieces of permalloy sheets with a 0.08 mm high-strength enamelled wire around several hundred turns. When using, the switch K board is placed on the TL, and the hearing aid is placed beside the telephone, the call content of the telephone can be heard, and the volume control is provided to facilitate the patient to make
Silicone Tube Neon LED Strip is the hottest product in the world.put the led strip inside milky Silicone tube.
With good waterproof performance. The milky white cover makes the led strips soft and even,
single color and RGB ,colorful and other colors are optional. An external external controller can achieve the effect.
IP68 waterproof can be used for outdoor decoration, often used for building decoration, Christmas decoration and other places.
The installation is simple and convenient, the repair is simple, and the scope of application is wide.
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June 15, 2019