Class D amplifier

Details Class D amplifier Class D amplifier

2007-10-02

2007-10-02

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

C330S298000

Reexamination Certificate

active

11195832

ABSTRACT:
A drive signal that matches the bias of a transistor is generated. A differential amplifier calculates the difference between a specified voltage of negative power supply and another input signal. Then, a resistor that realizes a pull-down function level-shifts it towards a negative power supply voltage having a higher absolute voltage value to generate another differential signal, which is in turn amplified in another amplifier, to generate another drive signal that matches the bias of another transistor. Respective current mirror circuits detect a falling voltage occurring at both ends of a resistor connected between the transistor and the higher positive power supply voltage and a falling voltage occurring at both ends of a resistor connected between the other transistor and the higher negative power supply voltage, respectively. Then, the presence of an excessive electric current is detected by generating electric currents in accordance with to the falling voltages.

REFERENCES:
patent: 6108182 (2000-08-01), Pullen
patent: 6448851 (2002-09-01), McIntosh et al.
patent: 6476673 (2002-11-01), Takagishi
patent: 6597240 (2003-07-01), Walburger et al.

Affiliated with

Also associated with

Rating

Class D amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Class D amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Class D amplifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3840560