OFFSET VOLTAGE GENERATING CIRCUIT

• Main Authors: TAYA KOJI, KOAKUTSU HIROSHI
• Format: Patent
• Language: English
• Published: 04.06.1992
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

PURPOSE:To simplify the circuit by utilizing an amplifier circuit to amplify an input signal so as to generate an offset voltage. CONSTITUTION:An input circuits turned on and an offset voltage generating section 7 is turned off in response to an output signal of a control circuit 12 in the case of the normal operation. Thus, an amplifier circuit 1 amplifies the input signal fed from the input circuit 4 and outputs the result to its output terminal. Moreover, in the case of the offset voltage generation, the offset voltage generating section 7 is activated and the input circuit 4 is inactivated in response to the output signal from the control circuit 12. Thus, the amplifier circuit 1 generates an output signal in response to the offset voltage generating section 7 to its output terminal. Thus, the circuit is simplified.