1. A transconductance compensating bias circuit compensating for a transconductance of a field-effect transistor, the transconductance compensating bias circuit comprising:
a first field-effect transistor having a first electrode, a second electrode, and a gate connected to the first electrode, wherein a reference current flows through the first and second electrodes;
a second field-effect transistor having a first electrode, a second electrode, and a gate connected to the gate of the first field-effect transistor, wherein a bias current flows through the first and second electrodes;
a resistor connected to one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor; and
a comparison part configured to output a signal corresponding to a result of comparison of a first potential of the first electrode of the first field-effect transistor and a second potential of the first electrode of the second field-effect transistor,
wherein the reference current and the bias current are controlled by the output signal of the comparison part so as to equalize the first potential and the second potential.
2. The transconductance compensating bias circuit as claimed in claim 1, further comprising:
a phase compensator circuit provided between an input and an output of the comparison part.
3. The transconductance compensating bias circuit as claimed in claim 2, wherein the phase compensator circuit comprises a capacitor.
4. The transconductance compensating bias circuit as claimed in claim 1, further comprising:
a third field-effect transistor provided between the first electrode of the first field-effect transistor and a high potential source, the third field-effect transistor serving as a source of the reference current and being of a p-channel type; and
a fourth field-effect transistor provided between the first electrode of the second field-effect transistor and the high potential source, the fourth field-effect transistor serving as a source of the bias current and being of the p-channel type,
wherein the first and second field-effect transistors are of an n-channel type,
the one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor is connected to a low potential source through the resistor, and another one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor is connected to the low potential source, and
the output signal of the comparison part is fed to the gate of each of the third and fourth field-effect transistors.
5. The transconductance compensating bias circuit as claimed in claim 1, further comprising:
a third field-effect transistor provided between the first electrode of the first field-effect transistor and a low potential source, the third field-effect transistor serving as a source of the reference current and being of an n-channel type; and
a fourth field-effect transistor provided between the first electrode of the second field-effect transistor and the low potential source, the fourth field-effect transistor serving as a source of the bias current and being of the n-channel type,
wherein the first and second field-effect transistors are of a p-channel type,
the one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor is connected to a high potential source through the resistor, and another one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor is connected to the high potential source, and
the output signal of the comparison part is fed to the gate of each of the third and fourth field-effect transistors.
6. The transconductance compensating bias circuit as claimed in claim 1, wherein the comparison part comprises:
a third field-effect transistor having a gate to which one of the first potential and the second potential is applied;
a fourth field-effect transistor having a gate to which another one of the first potential and the second potential is applied;
a fifth field-effect transistor having an electrode connected to the fourth field-effect transistor and outputting the signal corresponding to the result of the comparison; and
a sixth field-effect transistor having a gate connected to a gate of the fifth field-effect transistor and an electrode connected to the gate of the sixth field-effect transistor and to the third field-effect transistor.
7. An amplifier, comprising:
an amplifier circuit having a field-effect transistor connected to a load resistor; and
a transconductance compensating bias circuit configured to apply a bias to a gate of the field-effect transistor,
wherein the transconductance compensating bias circuit includes
a first field-effect transistor having a first electrode, a second electrode, and a gate connected to the first electrode, wherein a reference current flows through the first and second electrodes;
a second field-effect transistor having a first electrode, a second electrode, and a gate connected to the gate of the first field-effect transistor, wherein a bias current flows through the first and second electrodes;
a resistor connected to one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor; and
a comparison part configured to output a signal corresponding to a result of comparison of a first potential of the first electrode of the first field-effect transistor and a second potential of the first electrode of the second field-effect transistor,
wherein the reference current and the bias current are controlled by the output signal of the comparison part so as to equalize the first potential and the second potential.
8. The amplifier as claimed in claim 7, wherein the transconductance compensating bias circuit further comprises:
a phase compensator circuit provided between an input and an output of the comparison part.
9. The amplifier as claimed in claim 7, wherein the phase compensator circuit comprises a capacitor.
10. The amplifier as claimed in claim 7, wherein the transconductance compensating bias circuit further comprises:
a third field-effect transistor provided between the first electrode of the first field-effect transistor and a high potential source, the third field-effect transistor serving as a source of the reference current and being of a p-channel type; and
a fourth field-effect transistor provided between the first electrode of the second field-effect transistor and the high potential source, the fourth field-effect transistor serving as a source of the bias current and being of the p-channel type,
wherein the first and second field-effect transistors are of an n-channel type,
the one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor is connected to a low potential source through the resistor, and another one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor is connected to the low potential source, and
the output signal of the comparison part is fed to the gate of each of the third and fourth field-effect transistors.
11. The amplifier as claimed in claim 7, wherein the transconductance compensating bias circuit further comprises:
a third field-effect transistor provided between the first electrode of the first field-effect transistor and a low potential source, the third field-effect transistor serving as a source of the reference current and being of an n-channel type; and
a fourth field-effect transistor provided between the first electrode of the second field-effect transistor and the low potential source, the fourth field-effect transistor serving as a source of the bias current and being of the n-channel type,
wherein the first and second field-effect transistors are of a p-channel type,
the one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor is connected to a high potential source through the resistor, and another one of the second electrode of the first field-effect transistor and the second electrode of the second field-effect transistor is connected to the high potential source, and
the output signal of the comparison part is fed to the gate of each of the third and fourth field-effect transistors.
12. The amplifier as claimed in claim 7, wherein the comparison part includes:
a third field-effect transistor having a gate to which one of the first potential and the second potential is applied;
a fourth field-effect transistor having a gate to which another one of the first potential and the second potential is applied;
a fifth field-effect transistor having an electrode connected to the fourth field-effect transistor and outputting the signal corresponding to the result of the comparison; and
a sixth field-effect transistor having a gate connected to a gate of the fifth field-effect transistor and an electrode connected to the gate of the sixth field-effect transistor and to the third field-effect transistor.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A laterally tiltable, multitrack vehicle, comprising:
a vehicle body;
three wheels;
first and second wheels of the three wheels assigned to a common axle to form a first wheel pair;
a first wheel control part suspending the first wheel of the wheel pair from the vehicle body and a second wheel control part suspending the second wheel of the wheel pair from the vehicle body, the first wheel control part being coupled to the second wheel control part via a double lever rotatably mounted on the vehicle body,
wherein at least two pivot points for the double lever can be fastened to the vehicle body, the pivot points being spaced apart in a direction of a longitudinal extent of the double lever.
2. The vehicle as claimed in claim 1, wherein each of the pivot points is formed by a pivot joint that is selectively releasable from the vehicle body during travel of the vehicle.
3. The vehicle as claimed in claim 2, wherein the pivot joints are selectively releasable from the vehicle body so that one of the pivot joints remains fastened to the vehicle body during tilting of the vehicle while another pivot joint is released from the vehicle body during the tilting.
4. The vehicle as claimed in claim 1, wherein each wheel is mounted on the respective wheel support in a manner which is resilient and damped in terms of oscillations.
5. The vehicle as claimed in claim 1, wherein the first and second wheel control parts are longitudinal links, a first end of each longitudinal link being pivotably mounted on the vehicle body and a second end of each link being rotatably mounted to the respective wheel.
6. The vehicle as claimed in claim 1, further comprising a fourth wheel, the third and fourth wheels forming a second wheel pair.
7. The vehicle as claimed in claim 6, wherein one wheel pair forms steerable front wheels and the second wheel pair forms rear wheels of the vehicle.
8. The vehicle as claimed in claim 1, wherein the vehicle is a motor vehicle.
9. The vehicle as claimed in claim 1, wherein the pivot points are located on either side of a central longitudinal plane of the vehicle.
10. The vehicle as claimed in claim 1, wherein the vehicle body is a closed vehicle body.
11. A laterally tiltable, multitrack vehicle, comprising:
a vehicle body;
three wheels;
first and second wheels of the three wheels assigned to a common axle to form a first wheel pair;
a first wheel control part suspending the first wheel of the wheel pair from the vehicle body and a second wheel control part suspending the second wheel of the wheel pair from the vehicle body, the first wheel control part being coupled to the second wheel control part via a double lever rotatably mounted on the vehicle body,
wherein the double lever is releasably connected to the vehicle body via at least two pivot points, and wherein the at least two pivot points are configured to be selectively released from the vehicle body to change an axis of rotation of the double lever.
12. The vehicle as claimed in claim 11, wherein the at least two pivot points are configured to be selectively released based on a direction of tilt of the vehicle body.
13. The vehicle as claimed in claim 11, wherein each of the pivot points is formed by a pivot joint that is selectively releasable to the vehicle body during travel of the vehicle.
14. The vehicle as claimed in claim 11, wherein each wheel is mounted on the respective wheel support in a manner which is resilient and damped in terms of oscillations.
15. The vehicle as claimed in claim 11, wherein the first and second wheel control parts are longitudinal links, a first end of each longitudinal link being pivotably mounted on the vehicle body and a second end of each link being rotatably mounted to the respective wheel.
16. The vehicle as claimed in claim 11, further comprising a fourth wheel, the third and fourth wheels forming a second wheel pair.
17. The vehicle as claimed in claim 16, wherein one wheel pair forms steerable front wheels and the second wheel pair forms rear wheels of the vehicle.
18. The vehicle as claimed in claim 11, wherein the vehicle is a motor vehicle.
19. The vehicle as claimed in claim 11, wherein the pivot points are located on either side of a central longitudinal plane of the vehicle.
20. A laterally tiltable, multitrack vehicle, comprising:
first and second wheels assigned to a common axle;
a third wheel;
first and second wheel control parts suspending, respectively, the first and second wheels from a vehicle body;
a double lever comprising a single element rotatably mounted on the vehicle body and coupling the first and second wheel control parts,
wherein an effective length of the double lever is selectively variable.
21. The vehicle as claimed in claim 20, wherein the effective length of the double lever is a length of the double lever between one of the first and second wheel control parts and at least one pivot point at which the double lever is rotatably mounted to the vehicle body.
22. The vehicle as claimed in claim 21, wherein the at least one pivot point comprises two pivot points,
wherein the respective length is selectively variable by changing a pivot point at which the double lever is rotatably mounted to the vehicle body.
23. The vehicle as claimed in claim 20, wherein the double lever is rotatably mounted to rotate about an axis substantially perpendicular to a longitudinal axis of the double lever.
24. A laterally tiltable, multitrack vehicle, comprising:
first and second wheels assigned to a common axle;
a third wheel;
first and second wheel control parts suspending, respectively, the first and second wheels from a vehicle body;
a double lever rotatably mounted on the vehicle body and coupling the first and second wheel control parts,
wherein an effective length of the double lever is selectively variable;
wherein the double lever is releasably fastened to the vehicle body via at least two pivot points.
25. The vehicle as claimed in claim 24, wherein the at least two pivot points are configured to be selectively and individually released from the vehicle body.
26. The vehicle as claimed in claim 24, wherein the at least two pivot points are configured to be selectively released from the vehicle body based on a direction of tilt of the vehicle body.
27. The vehicle as claimed in claim 24, wherein each of the at least two pivot points is formed by a pivot joint that is selectively releasable from the vehicle body during travel of the vehicle.
28. The vehicle as claimed in claim 24, wherein an effective length of the double lever is varied by selectively releasing one of the at least two pivot points.