Audio Engineering

202 Chapter 7 of the type shown in Figure 7.32. In this, if the two-input transistors are reasonably well matched in current gai ...

Preamplifi ers and Input Signals 203 illustrated in Figure 7.21 , where even at currents in the 1- to 10-mA region, dynamic impe ...

204 Chapter 7 source, independent of supply lines or reference potentials, and which can be used at either end of the load chain ...

Preamplifi ers and Input Signals 205 disuse because it leads to slightly lower quality THD fi gures than are possible with other ...

206 Chapter 7 Because of this, there is a marked preference on the part of IC design engineers for the use of circuit layouts kn ...

Preamplifi ers and Input Signals 207 having various drive current/output current ratios, for incorporation into discrete compone ...

208 Chapter 7 MOSFETs, where the lower effective mutual conductance values for the devices would normally result in relatively p ...

Preamplifi ers and Input Signals 209 Although the RCA design employs MOSFET input devices, which offer, in principle, an input i ...

210 Chapter 7 of the even more exotic later developments such as the NE5534 or the OP27, as the basic gain blocks, around which ...

Preamplifi ers and Input Signals 211 masking layers can be applied. The results are seldom very satisfactory. Such a lateral PNP ...

212 Chapter 7 Because of this uncertainty, the designer of equipment in which price is not a major consideration will normally s ...

Preamplifi ers and Input Signals 213 system, causes each signal to be modulated by the other. This is conspicuous in the drawing ...

214 Chapter 7 7.16.2 Transient Defects A more insidious group of signal distortions may occur when brief signals of a transient ...

Preamplifi ers and Input Signals 215 conditions, but will also occur in low-pass fi lter systems if too high an attenuation rate ...

216 Chapter 7 Since output load and other inadvertent capacitances are unavoidable, it is essential to ensure that all such curr ...

Preamplifi ers and Input Signals 217 arise in such tests. The most common of these is that of the intrusion of noise and alien s ...

218 Chapter 7 to signal and earth line paths, avoidance of excessive HF bandwidth at the input stages) that are applicable to th ...

Preamplifi ers and Input Signals 219 This is because: ● increased applied potentials produce higher thermal dissipations in the ...

220 Chapter 7 infi nitely high, it will attenuate the maximum signal voltage (Emax ) obtainable from the source, in the ratio E ...

Preamplifi ers and Input Signals 221 In high-quality equipment, this problem is sometimes avoided by replacing R 1 by a precisio ...