发明名称 |
OPTISCHER SENDER |
摘要 |
A transmitter employing a light-emitting diode as an output element, this element being included in series with a resistor in the output circuit of a difference amplifier the inverting input of which is coupled to the junction point of the diode and resistor, includes a network for compensating for the non-linear output power versus energizing current characteristic of the diode. This network comprises a field effect transistor (fet) biased to operate in the pre-pinch-off region and having its source-drain path connected to the diode. The source-drain path of the FET may shunt the diode and a further resistor in series therewith, or alternatively may be included in a feedback path to the inverting input of the amplifier. |
申请公布号 |
DE3414450(A1) |
申请公布日期 |
1984.10.31 |
申请号 |
DE19843414450 |
申请日期 |
1984.04.17 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
HUGO NORDHOLT,ERNST;PIETER DE JONG,LEENDERT |
分类号 |
H04B10/02;H01L33/00;H01S5/042;H04B10/155;H04B10/18;(IPC1-7):H04B9/00 |
主分类号 |
H04B10/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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