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| Number | Title | Issue Date |
| 7301394 | Impedance matched variable gain low noise amplifier using shunt feed-back The variable gain amplifier includes a forward path that provides the amplifier variable gain, and a feedback path. The feedback path uses a switch that is turned on at low gain levels. The switch taps into the feedback resistor, shunting it to signal-ground and eli... | 11/27/2007 |
| 7274218 | Integrated circuit An integrated circuit includes a first and a second amplifier circuit (10, 20), which are in each case driven by an input signal (Vin) having a high and a low signal level and a reference signal (Vref) having a constant signal level and, on the output side (D... | 09/25/2007 |
| 7224214 | Integrated circuit An integrated circuit includes a first and a second amplifier circuit each driven by an input signal. The first and second amplifier circuits generate a first and a second control signal on the output side. The control signals are generated independently of one anot... | 05/29/2007 |
| 6559698 | Spread spectrum type clock generating circuit To restrain cycle-to-cycle jitter in a clock generator subjected to EMI a 2nd order PLL having a loop filter including a first capacitor and a first resistor, is provided where a reduction in a comparison frequency is avoided by using a clock m... | 05/06/2003 |
| 4158162 | Time-proportioning control system for earth-working machines A time-proportioning control system is disclosed for controlling an on-off solenoid valve of an earth-working machine, the system having a sensor responsive to an external reference for producing an error signal, an amplifier switch for switching on and o... | 06/12/1979 |
| 4136307 | Amplifier arrangement for process controller A process controller for diameter control in drawing optical fibre preforms consists essentially of the parallel arrangement of two output amplifiers, one providing low gain at low &#b1; input voltages, while the other has high gain at high &#b1; input vo... | 01/23/1979 |
| 4052677 | Non-linear function generator with switched channels The generator includes an input terminal, an output terminal, and three channels connected between the input and output terminals. The first channel contains a first amplifier and a first FET switch connected in series between the terminals. The second ch... | 10/04/1977 |
| 4001703 | Transmission line interface circuit An interface circuit for a transmission line between a remote transmitter and a central control room instrument includes an operational amplifier. The input of the operational amplifier is derived from the current drawn by the remote transmitter. The outp... | 01/04/1977 |
