Title:
AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/1999/054993
Kind Code:
A1
Abstract:
The present invention relates to an amplifier. It consists of a coupled transformer and two complementary type source-followers which are connected with the terminal of the input-output of the transformer and with the symmetric power. The input and output stage of the amplifier use MOS-type FET, omitted the gate bias resistor. Accordingly, the effects of the gate bias resistor on the useful signal can be eliminated so that the high fidelity can be improved while the circuit becomes simple. The amplifier of the present invention has some advantages such as the simple circuit, low cost, excellent efficiency and working stable. Moreover, it can be used in the HI-FI power and other electroacoustic products.
Inventors:
LI SHAOFU (CN)
Application Number:
PCT/CN1998/000063
Publication Date:
October 28, 1999
Filing Date:
April 17, 1998
Export Citation:
Assignee:
LI SHAOFU (CN)
International Classes:
H03F3/185; H03F3/30; (IPC1-7): H03F3/185
Foreign References:
| US4159450A | 1979-06-26 | |||
| CN2096845U | 1992-02-19 | |||
| US4194165A | 1980-03-18 | |||
| US4140976A | 1979-02-20 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (2 Fuchengmenwai Street, Beijing 7, CN)
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