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US 2003/0142834 A1Published application
Headphone amplifier
AssigneeChurch of Spirtual Technology
InventorsRichard Stinnett, Albert Ray Trussell, Russell D. Bellin
Life of this patent
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Abstract
A compact portable stereo headphone amplifier system for use with a conventional stereo audio source, such as a cassette or compact disc player, in which components are located on both sides of a circuit board and in which left channel components and right channel components are located on opposite sides of the circuit board thereby providing a compact unit.
Claims5
A headphone amplifier comprising:
- a housing having a first side;
- an audio signal input jack, an audio signal output jack, an on/off switch and a volume control positioned on said first side of the housing;
- a circuit board positioned inside of the housing;
- a battery compartment positioned inside of the housing and separated from said circuit board by a barrier;
- a first channel audio amplification circuit positioned on a first side of the circuit board and adapted to amplify a first channel audio input signal;
- a second channel audio amplification circuit positioned on a second side of the circuit board adapted to amplify a second channel audio input signal;
- the first channel circuit adapted to receive the second channel audio input signal and to amplify the second channel input signal to a predetermined degree of amplification less than the amplification of the first channel input signal;
- the second channel circuit adapted to receive the first channel audio input signal and to amplify the first channel input signal to a predetermined degree of amplification less than the anplification of the first channel input signal.
5 more elements
An amplifier circuit comprising:
- a printed circuit board having a first surface and an opposing second surface;
- operationally connected circuit elements mounted on said first surface and said second surface of said circuit board.
A power supply circuit comprising:
- a printed circuit board having a first surface and an opposing second surface;
- operationally connected circuit elements mounted on said first surface and said second surface of said circuit board.
An amplifier circuit comprising:
- a printed circuit board having a first surface and an opposing second surface;
- operationally connected amplifier circuit elements mounted on said first surface and said second surface of said circuit board;
- a power supply circuit;
- said power supply circuit elements mounted on said first surface and said second surface of said circuit board;
- said power supply circuit being operationally coupled to said amplifier circuit.
2 more elements
Dependencies are inferred from the claim text.