He includes two interesting demos. One is that by attaching the flickering LED to a BJT he can turn it into a current amplifier and successfully drive a much more powerful 1W LED with the same effect.

Figure 8-1: Common-emitter amplifier with resistive load ... In order to get higher gain without arbitrarily high collector voltage, an active load (i.e., a current source) can be used. Let s first ...

Such large extent of amplification cannot be achieved with the BJT amplifiers discussed in Chapters 6 and 7 ... respectively. (ii) The current gain can still be achieved because it is the fundamental ...

Take your pick: Mathematical equations governing the various currents inside a BJT A good place to start ... application of a transistor as a linear amplifier and cannot be used to explain ...

So are BJTs, despite the conventional wisdom that persists in regarding them as current-controlled ... will compromise the amplifier slew-rate if the VAS is not designed to cope. FETs tend to have ...