H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/11
H03F 3/38 (2006.01) H03F 3/217 (2006.01) H03F 3/387 (2006.01)
Patent
CA 1130872
ABSTRACT OF THE DISCLOSURE A pulse width modulated signal amplifier includes a first DC voltage source having first and second terminals, first and second switching transistors each having a control electrode, the main current path of which is connected in series between the first and second terminals of the first DC voltage source, the connection point of which is connected to an out- put terminal, a signal input circuit for supplying a ` pulse width modulated signal to the control electrodes of the first and second switching transistors, a low pass filter having an input connected to the output terminal and an output to be connected to a load, a second DC voltage source having first and second ter- minals, the output voltages of which are lower than those of the first and second terminals of the first DC voltage source, a first circuit including a first diode and connected between the first terminal of the second DC voltage source and the output terminal, and a second circuit including a second diode connected between the second terminal of the second DC voltage source and the output terminal, thereby to reduce amplitude distortion in the output voltage of the output terminal.
352652
Gowling Lafleur Henderson Llp
Sony Corporation
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