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121. Expounds the principle of audio frequency power amplifier is designed for manostat, preamplifier, volume control, power amplifier four parts digital power amplifier megaphone.

122. Two power amplifier output stage using PMOS and NMOS transistors by the special design.

123. The high linear power amplifier has to be used to guarantee communication quality. Unfortunately, power efficient amplifiers are typically nonlinear.

124. The design for high-power MOS tube as the core original pipe, using discrete components and integrated operational amplifier combines the low-frequency power amplifier design.

125. The power amplifier (12) has a fixed gain mode and a variable gain mode used for the two modulation formats, respectively.

126. The electronics of the cavity dumper driver consists of a frequency source, a pulse modulator and a power amplifier.

127. A rectifier and filter circuit, power amplifier, driving circuit is designed.

128. Purpose: Audio frequency power amplifier and low speed switching applications.

129. The OFDM system has a major disadvantage that high peak to average power ratio (PAPR) can cause nonlinear distortion in the high power amplifier (HPA).

130. DC high voltage amplifier developed using amplitude modulation includes an amplitude modulator, a power amplifier, a step-up transformer,[www.Sentencedict.com] and a linear detector.

131. The current type PWM controller UC3842 is used as control core in power amplifier design to produce PWM signals that control times of analog switch.

132. The traditionary linear power amplifier has been washed out for its low efficiency and big size.

133. After the class as a C9018, 1 months C3355 and the C2053 has a three-level power amplifier circuit by the LC filter resonant antenna then launch by transmitting aerial.

134. Purpose: Voltage regulator , DC - DC converter and relay driver audio frequency power Amplifier.

135. Another choice is to linearize a nonlinear power amplifier so that overall we have a linear and reasonably efficient device.

136. Pointed out that it is a very important subject to look for the advanced, high-efficiency, useable, stable(sentencedict.com), reliable high linear power amplifier of UHF TVtransmitter by now.

137. You do not need to calibrate the Voltage Sensor or Power Amplifier.

138. A novel phase synchronously demodulating circuit was introduced in this paper, in which digital controlled analog switch and high power amplifier were adopted.

139. This thesis presents a design of class AB audio power amplifier.

140. Therefore, we use unipolar switching pulse width modulation scheme to realize a filterless Class - D power amplifier.

141. It is first applied in our graduate school for liquid cooling power amplifier.

142. Fidek Amplifier , and its audio power amplifier have been confirmed as Guangdong Top Brand Product.

143. At last, we design an experimental system including signal source, power amplifier array and loudspeaker array. Some experiments of the directive property of loudspeaker array are completed.