发明授权
- 专利标题: Method and apparatus for biasing an amplifier
- 专利标题(中): 用于偏置放大器的方法和装置
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申请号: US13028421申请日: 2011-02-16
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公开(公告)号: US08400221B2公开(公告)日: 2013-03-19
- 发明人: Charles C. Adams
- 申请人: Charles C. Adams
- 申请人地址: US AZ Scottsdale
- 专利权人: Fender Musical Instruments Corporation
- 当前专利权人: Fender Musical Instruments Corporation
- 当前专利权人地址: US AZ Scottsdale
- 代理机构: Atkins & Associates, P.C.
- 代理商 Robert D. Atkins
- 主分类号: H03F3/26
- IPC分类号: H03F3/26 ; H03F99/00
摘要:
An apparatus and method for biasing each amplifier of an amplification stage provides that the voltage across each current sensing element of each amplifier of the amplification stage is measured. For each pair of voltage measurements taken, a sum and difference is calculated, where the sum is processed to determine minima peaks and the difference is averaged. A portion of the sum term and the average of the difference term are summed to yield the individual bias current conducted by a first amplifier of the amplification stage. The difference between a portion of the sum term and the average of the difference term is calculated to yield the individual bias current conducted by the second amplifier of the amplification stage. The bias current conducted by the first and second amplifiers may then be individually modified manually, or conversely, may be modified automatically based upon the bias current measurements taken.
公开/授权文献
- US20110135116A1 Method and Apparaus for Biasing an Amplifier 公开/授权日:2011-06-09
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