• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a circuit for automatic dynamic compression or expansion the control voltage generator generates a control voltage which is linear against the logarithm of the input amplitude. This characteristic is achieved by a transfer member consisting of several transistors which are subject to different reference voltages and the series resistances of which are staggered.
    公开号:SU854286A3
    申请号:SU792825148
    申请日:1979-10-01
    公开日:1981-08-07
    发明作者:Шредер Эрнст；Вермут Юрген
    申请人:Лицентиа Патент-Фервальтунгс-Гмбх (Фирма)；
    IPC主号:
    专利说明:

    constant voltage aor 18, ranzistory 19,20, diode circuit 21.
    The regulator operates as follows, both 3 ohms.
    Nonlinear element 2 contains the transistort 4.5 and 7, which are really determining its control characteristics, as well as resistors, 10-12. The collectors of the transistors are interconnected and connected to the input of the current mirror 15. The emitters of transistors 4,5,7 are connected respectively to one terminal of resistors 12,10,11. Other terminals of resistors 12,10,11 are connected to each other and the resistor 22 and the emitter-collector of the transistor 8 are connected to the input of the second current mirror 16. The bases of the transistors 4.5 are connected through the input terminals to the source 9. The base of the transistor 7 is connected via the input terminal to the source 9.
    The base of transistor 8 on one side is connected to the collector of transistor 13, the base of which in turn is connected via an input terminal to source 9, and the emitter is connected through a resistor 14 to an input terminal to which a negative supply voltage is applied. On the other hand, the base of the transistor 8 is connected to the emitter of the amplitude detector 1 of the transistors 19,20. The common collector of detector 1 is connected to the input terminal, to which a positive voltage is applied. The base of the detector is connected to the generator 18 permanent. new voltage.
    By controlling from the base of the transistor 19, a control of the current separation supplied from the transistor 13 is achieved. This allows controlling the emitter potential of the transistor 8 with the help of a control voltage at the base of the transistor 19 exponential change in their collector current depending on the potential at the emitter of the transistor 8.
    To obtain the desired characteristic with respect to the resulting collector current of transistors 4, 5.8, depending on the potential at the emitter of transistor 8, the reference. the voltage and resistance of resistors 10-12 is graduated. The reference voltage of one source 9 is greater than the reference voltage of another. The resistance of resistor 10 is greater than the resistance of resistor 11, the resistance of resistor 11 is greater than the resistance of resistor 12, and the resistance of resistor 12 is greater than the resistance of resistor 22. Resistance of resistor 22 can also be eliminated if, when selecting values and calibrating resistors of 10- 12 its value is already included. As long as the potential at the common point of the resistors 12,10,11 is between the reference voltage of one source Y and the reference voltage of another, the characteristic depends only on the properties of transistor 4 in relation to the resistors 10,12. When the common point potential is between the reference voltage of one source 9 and the reference voltage of another, additional current flows through transistor 5, so that the resulting characteristic is determined by the properties of transistors 4.5 in relation to resistors 11 or 10 and 12. If at a common point of resistors 10-12 less than source 9, transistor 7 also opens, so that the resultant characteristics are determined by the properties of transistors 4,5,7 in conjunction with resistors 10-12.
    The grading of the reference voltages and resistances of the resistors 10-12 is made so that the next transistor is open at a time when a linearity region exists on the other transistor. Similarly, it is possible to achieve such a course of characteristic, which has the required linearity after several decades.
    Using the resultant collector current of transistors 4, 5, 7, diode chains 21, which are connected in pairs with TOKOBbBvi mirror 15, are controlled through the input of the current mirror 15. The circuit of the current mirror 15 ensures that the currents in each pair of diode circuit exactly match the input current of this circuit. Each pair of diode circuits 21 consists of six series-connected diodes. The other ends of the diode chains are connected respectively to the inputs of the current mirror 16, the input of which is powered by the collector current of transistors 4,5,7,8. Depending on the connection points of the diodes, a differential resistance is formed depending on the current through the diodes, which serves directly as a controlled electronic resistance 17. In other pairs of diode chains 21, a differential resistance is formed at the appropriate place, which serves as a controlled electronic resistance 17.
    Since the circuits of the current mirrors 15, 16 are connected to symmetrical supply voltages m + i, i, and represent an additional structure on the controlled electronic resistance 17 there will be zero potential
    权利要求:
    Claims (1)
    [1]
    Claims of the Invention A regulator for controlling the transmission coefficient, comprising
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    同族专利:
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    GB2033701B|1982-09-22|
    DK411179A|1980-04-03|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2420849C1|2007-09-13|2011-06-10|Тойота Дзидося Кабусики Кайся|Charging control device for transport facility and transport facility|NO142768C|1974-01-26|1980-10-08|Licentia Gmbh|CLUTCH FOR AUTOMATIC DYNAMICS COMPRESSION OR EXPANSION|
    DE2406258C2|1974-02-09|1976-01-08|Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt|Circuit for automatic dynamic compression or expansion|
    US3986049A|1975-06-30|1976-10-12|Motorola, Inc.|Audio compressor/limiter amplifier|
    JPS5729368Y2|1977-02-10|1982-06-28|DE2847436C2|1978-11-02|1990-01-25|Ant Nachrichtentechnik Gmbh, 7150 Backnang, De|
    JPS5752240A|1980-09-09|1982-03-27|Sony Corp|Noise reducing circuit|
    WO1982001290A1|1980-10-03|1982-04-15|Bloy G|System for maximum efficient transfer of modulated audio frequency energy|
    DE3039410C2|1980-10-18|1988-09-15|Ant Nachrichtentechnik Gmbh, 7150 Backnang, De|
    WO1983000787A1|1981-08-26|1983-03-03|Bloy, Graham, Philip|System for maximum efficiency transfer of modulated signals utilizing line systems|
    DE3604832A1|1986-02-15|1987-08-20|Standard Elektrik Lorenz Ag|COMPRESSOR|
    DE10148441C1|2001-10-01|2003-03-06|Siemens Ag|Dynamic compressor for analogue signal uses successive amplifier stages providing output signals summated with supplied analogue signal|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2842945A|DE2842945C3|1978-10-02|1978-10-02|Circuit for generating a control signal for controlling the transmission rate of electronically controllable amplifying or attenuating elements|
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