PORTABLE DEAF-MUTES LEANING WORDS MACHINE

PORTABLE DEAF-MUTES LEANING WORDS MACHINE

  • CN 2,103,174 U
  • Filed: 08/27/1991
  • Issued: 04/29/1992
  • Est. Priority Date: 08/27/1991
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of portable deaf and dumb phone, be by microphone 11, prime amplifier 12, volume adjuster 14, power amplifier 17 and stereophone 18 etc. are partly formed, and it is characterized in that also being connected between prime amplifier 12 and power amplifier 17 anti-click circuit 13, frequency spectrum compensation circuit 15 and hearing compensation circuit 16.

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