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US 5,399,986 AGranted
Isolated multi-output power amplifier
OwnerWailit Yeninventor
Life of this patent
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Abstract
A multi-output power amplifier is disclosed. The amplifier is divided into two stages. A single voltage amplifier is used as an input amplifying stage and several current amplifiers are used as a second amplifying stage. The inputs to the current amplifiers share a common connection to the output of the voltage amplifier and feedback is provided from the current amplifier outputs to the voltage amplifier input.
Claims8
An amplifying device comprising:
- (a) a first amplification stage comprising a voltage amplifier having an input and output;
- (b) a second amplification stage comprising a multiplicity of substantially identical current amplifiers each current amplifier having an input sharing a common connection to the output of the voltage amplifier, whereby each current amplifier receives substantially the same input signal and produces substantially the same output signal;
- and
- (c) a feedback circuit connecting the output of each current amplifier with the input of the voltage amplifier.
1 more element
An amplifying device comprising:
- (a) a first amplification stage comprising a voltage amplifier having an input and output;
- (b) a second amplification stage comprising a multiplicity of substantially identical current amplifiers each current amplifier having an input sharing a common connection to the output of the voltage amplifier, whereby each current amplifier receives substantially the same input signal and produces substantially the same output signal;
- (c) a feedback circuit connecting the output of each current amplifier with the input of the voltage amplifier;
- and
- (d) a speaker component connected to the output of each current amplifier, each speaker component having a filter which passes a predetermined band of frequencies.
2 more elements
Dependencies are inferred from the claim text.