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US 5,396,193 AGranted
Frequency response-compensated circuit
AssigneeDeutsche Thomson-Brandt GmbH
InventorsRudolf Koblitz, Steffen Lehr
Life of this patent
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Abstract
A frequency compensated circuit includes a frequency compensation component and a negative feedback loop for feeding an output signal to the circuit input terminal. The circuit input terminal also receives a compensation signal from the frequency compensation component. A controlled system provides an output signal to the input terminal. A controlled current is supplied to the controlled system to increase the output voltage and the compensation signal from the compensation component can be substantially lower than it is in the prior art type of systems.
Claims8
Apparatus comprising:
- a first source of a first reference signal;
- an amplifier having first input coupled to said first source of said first reference signal, a second input and an output;
- a frequency compensation capacitor coupled to said amplifier for preventing oscillations of said amplifier;
- an output circuit;
- said amplifier being coupled in a forward path between said first source and an output of said forward path;
- a feedback path coupled between said output of said forward path and said second input of said amplifier;
- a second source of a second reference signal coupled to said forward path between the output of said amplifier and the output of said forward path;
- and
- means coupled between said output of said amplifier and said second input of said amplifier for reducing the loop gain of the combination of said forward path and said feedback path.
6 more elements
Dependencies are inferred from the claim text.