Audio Engineering

142 Chapter 5 into operation and start drawing current. Using an indirectly heated rectifi er would avoid this voltage surge and ...

Power Supply Design 143 voltage. The main reason for this is that the stored energy in a capacitor is defi ned by the relationsh ...

144 Chapter 5 With modern, low conduction resistance, semiconductor diodes, low equivalent series resistance (ESR) reservoir cap ...

Power Supply Design 145 would have, for reasons of circuit protection, a fi xed maximum current output. While this would mean th ...

146 Chapter 5 In view of the normal lack in much pop music of any identifi able reference sound source, such as would be provide ...

Power Supply Design 147 chosen so that its stray magnetic fi eld will be at right angles to the plane of the amplifi er PCB. 5.6 ...

148 Chapter 5 supply line through the constant current source, Q6 and Q7, because this has a very high output impedance in compa ...

Power Supply Design 149 approach is to use a combination of avalanche diode and power transistor, as shown in Figure 5.2(b). The ...

150 Chapter 5 speaking, although their noise can be lessened by connecting a low ESR capacitor in parallel with them. For applic ...

Power Supply Design 151 Q1 C1 D1 R1 V in V out Zener diode 0V 0V 470 uF (a) Figure 5.3 : Simple series regulators. Q1(PNP) V ...

152 Chapter 5 5.10 Overcurrent Protection ...................................................................................... ...

Power Supply Design 153 In the inverted stabilizer circuit shown in Figure 5.4 , R1 monitors the output current, and if this is ...

154 Chapter 5 overcurrent (s/c) and thermal overload protection, coupled with a very high degree of output voltage stability, an ...

Power output35–50V R9820R C100u1F MU2501 Q2 R2 R1 2K7 C24700 uF C34700 uF C10.1 uFC40.1 uF TR145–0–45V Power in BR1 To ve supp ...

156 Chapter 5 In the circuit of Figure 5.6 , which is used as the power supply for an 80- to 100-W power MOSFET audio amplifi er ...

Power Supply Design 157 on, will connect Q1 base to the 0-V rail, which, in turn, causes current to be drawn from Q2 base, which ...

 70V 70 V 70V 70V 6k8 2W R2 BR2 BR1 C310nF C110nF F1 C910nF 0V 8A F2 8A C1010nF C210nF C410nF Bridge R1 C56800 uFC66800 uF 0 ...

Power Supply Design 159 driver transistors. This eliminates the distortion that might otherwise arise because of breakthrough of ...

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Preamplifi ers and Amplifi ers PART 3 ...