H - Electricity – 03 – K
Patent
H - Electricity
03
K
332/34, 329/8
H03K 7/08 (2006.01) H03F 3/217 (2006.01) H03K 11/00 (2006.01) H04R 3/06 (2006.01)
Patent
CA 1055125
ABSTRACT OF THE DISCLOSURE A pulse width modulated signal amplifier including a signal input circuit, a clock pulse generating circuit, a pulse phase modulating circuit and a pair of pulse transformers. The pulse phase modulating circuit is supplied with the output signal of the signal input circuit and the clock pulse signal in such a manner as to produce a pair of pulse signals having a phase difference which is proportional to the output signal level of the signal input circuit. Each primary coil of the transformer is supplied with a pair of pulse signals, and the secondary coils are connected so as to add and subtract the pulse signals respectively. A rectifying circuit is supplied with the output signals from the secondary coils so as to produce the finally constituted pulse width modulated signals where the width of the pulse is proportional to the output signal level of the signal input circuit. At the same instance it is applied to a load through a low pass filter.
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