Single ended push pull amplifier circuit

Claim 2

A single ended push pull amplifier circuit comprising: single ended push pull circuit means using at least two transistors; differential amplifier means provided between base input terminals of said transistors and a signal input terminal of said amplifier circuit to operate the transistors; first power supply circuit means for supplying a power to the transistors; and second power supply circuit means provided independently of the first power supply circuit means and connected with a signal output terminal of said single ended push pull circuit means for adding a prescribed voltage onto an output voltage of said signal output terminal and supplying a power of the prescribed voltage added on said output voltage to the differential amplifier means.

Claim 3

A single ended push pull amplifier circuit as set forth in claim 1, wherein said prescribed voltage of said second power supply circuit means is set to be a voltage value having a magnitude capable of driving a base of each of said transistors.

Claim 4

A single ended push pull amplifier circuit as set forth in claim 1, further comprising feedback loop circuit means formed between input terminals of said differential amplifier means and output terminals of said transistors, respectively, said feedback loop circuit means having limiter circuit means for limiting outputs from the differential amplifier means.

Claim 5

A single ended push pull amplifier circuit as set forth in claim 3, wherein said limiter circuit means includes a unidirectional conductive element which is provided on a feedback signal line and which is conductive by a predetermined bias voltage.

Claim 6

A single ended push pull amplifier circuit as set forth in claim 4, wherein said unidirectional conductive element comprises a diode.

Claim 7

A single ended push pull amplifier circuit as set forth in claim 5, wherein said diode is a Zener diode.

Claim 8

A single ended push pull amplifier circuit as set forth in claim 1, further comprising feedback loop circuit means formed between each transistor and each differential amplifier means and each feedback loop circuit means having a resistor between an emitter of each transistor and a variable resistor connected between an input terminal of one differential amplifier and a power supply terminal for the other differential amplifier in said second power supply circuit means.

Claim 9

A single ended push pull amplifier circuit as set forth in claim 1, further comprising feed back loop circuit means formed between each transistor and each differential amplifier means, and each feedback loop circuit means having a resistor between an emitter of each transistor and a current source between an input terminal of each differential amplifier and the resistor.

Claim 10

A single ended push pull amplifier circuit comprising: single ended push pull circuit means using at least two transistors; differential amplifier means provided between base input terminals of said transistors and a signal input terminal of said amplifier circuit to operate the transistors; first power supply circuit means for supplying a power to the transistors; and second power supply circuit means connected with a signal output terminal of said single ended push pull circuit means for adding a prescribed voltage onto an output voltage of said signal output terminal and supplying a power of the prescribed voltage added on said output voltage to the differential amplifier means, wherein said second power supply circuit means comprises dividing means for dividing a voltage of said first power supply circuit means, a divided voltage divided by said dividing means being added on said output voltage and applied to differential amplifier means.

Claim 11

A single ended push pull amplifier circuit comprising: single ended push pull circuit means using at least two transistors; differential amplifier means provided between base input terminals of said transistors and a signal input terminal of said amplifier circuit to operate the transistors; first power supply circuit means for supplying a power to the transistors; and second power supply circuit means connected with a signal output terminal of said single ended push pull circuit means for adding a prescribed voltage onto an output voltage of said signal output terminal and supplying a power of the prescribed voltage added on said output voltage to the differential amplifier means, wherein said second power supply circuit means comprises dividing means for dividing a voltage of said first power supply circuit means, a divided voltage divided by said dividing means being added on said output voltage and applied to differential amplifier means.

Claim 12

A single ended push pull amplifier circuit as set forth in claim 9, wherein said dividing means comprises a resistor connected to the first power supply circuit means, and said second power supply circuit means further comprises a Zener diode and a capacitor, said Zener diode and the capacitor being provided in parallel between said signal output terminal and said differential amplifier means and connected to the resistor so as to add said output voltage therethrough onto the voltage divided by said resistor.

Claim 13

A single ended push pull amplifier circuit including a plurality of amplifier units connected in parallel such that input terminals and output terminals thereof are commonly connected, respectively, wherein each of said amplifier units includes single ended push pull circuit means using at least two transistors, differential amplifier means provided between base input terminals of said transistors and a single input terminal of said amplifier circuit to operate the transistors, first power supply circuit means for supplying a power to the transistors, and second power supply circuit means provided independently of the first power supply circuit means for supplying a power to the differential amplifier means, feedback loop being formed such that one input terminals of respective two input terminals of said differential amplifier means are connected to said signal input terminal of said amplifier circuit, and that the other input terminals are connected to the output terminals of said respective transistors, limiter circuits for limiting outputs from said differential amplifiers being inserted in said feedback loops, respectively.

Claim 14

A single ended push pull amplifier circuit including a plurality of amplifier units connected in parallel such that input terminals and output terminals thereof are commonly connected, respectively, wherein each of said amplifier units includes single ended push pull circuit means using at least two transistors, differential amplifier means provided between base input terminals of said transistors and a single input terminal of said amplifier circuit to operate the transistors, first power supply circuit means for supplying a power to the transistors, and second power supply circuit means provided independently of the first power supply circuit means for supplying a power to the differential amplifier means, feedback loop being formed such that one input terminals of respective two input terminals of said differential amplifier means are connected to said signal input terminal of said amplifier circuit, and that the other input terminals are connected to the output terminals of said respective transistors, limiter circuits for limiting outputs from said differential amplifiers being inserted in said feedback loops, respectively.