Amplifiers – Combined with automatic amplifier disabling switch means
Patent
1998-06-23
1999-10-26
Pascal, Robert
Amplifiers
Combined with automatic amplifier disabling switch means
330261, H03F 114
Patent
active
059735589
ABSTRACT:
It is an object of this invention to provide a differential amplifying apparatus capable of increasing the speed at which a standby state is changed to a normal state and reducing distorted waves. The present differential amplifying apparatus comprises: a differential circuit (1); an output circuit (2); bias voltage generating circuits (608, 610); a switch (609) for controlling the bias voltage generating circuits; a transistor (201) and a capacitor (203) connected in series between the output of the bias voltage generating circuit and a ground; a transistor (202) connected in parallel with the capacitor (203). A signal having the same polarity as a signal STBY controlling the switch (609) is supplied to the gate of the transistor (201), while a signal having a polarity opposite to that of the signal STBY is supplied to the gate of the transistor (202). Electric charge in a parasitic capacitance 611 of a bias signal VBIAS is also discharged through the capacitor (203) added separately from a resistor (610), thereby reducing the discharge time.
REFERENCES:
patent: 4104596 (1978-08-01), Smither
patent: 5841317 (1998-11-01), Ohmori et al.
patent: 5847599 (1998-12-01), Zhang
Date Yoshito
Ohmori Tetsuro
Choe Henry
Matsushita Electric - Industrial Co., Ltd.
Pascal Robert
LandOfFree
Differential amplifier circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential amplifier circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential amplifier circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-769094