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| Number | Title | Issue Date |
| 5874856 | Feed forward amplifier A feed forward amplifier (200) comprises a main signal path (201), an error signal path (203), and a third signal path (205). In the preferred embodiment of the present invention, the third signal path (205) comprises a gain and phase adjuster (245), dela... | 02/23/1999 |
| 5034697 | Magnetic amplifier switch for automatic tuning of VLF transmitting antenna A magnetic amplifier switch is connected to a transmitter and antenna of a LF transmitting system. The transmitter is operable to produce a signal which is modulated to first and second frequencies, for example "mark" and "space" frequencies, at different ... | 07/23/1991 |
| 4458160 | High gain Josephson junction voltage amplifier A single Josephson junction device is arranged in a single branch which comprises an external source resistor connected in series with an output resistor and a Josephson junction device. An input node and an input resistor are in series and connected to t... | 07/03/1984 |
| 4015148 | Hall effect device for use in obtaining square or square root of a voltage amplitude In accordance with the Hall effect, a magnetic field applied perpendicular to the direction of current flow through a conductor causes an electric field perpendicular to both the direction of the current flow and the direction of the magnetic field establ... | 03/29/1977 |
| 3993960 | Magnetic signal mixing amplifier Magnetic signal mixing amplifier comprises a saturable core having a rectangular magnetization characteristic, at least one D.C. input winding, and a D.C. driven oscillator connected to receive the output, said amplifier being supplied with an asymmetrica... | 11/23/1976 |
