. Electronic apparatus for biological research . Output Figure Figure obtainable. Thus a simple acceptor amplifier comprises a pentode having for its anode load a parallel tuned circuit {Figure ). The gain is^,„|Z, and we saw in Chapter 5 that V\) w^L &)^ Q' i + e 1/2 Since g^ is constant, the gain of the stage has the same form as \Zj,\ in Graph 25. Similarly a rejector amplifier might have the form of Figure The series tuned circuit is effectively in parallel with the load resistance and will have—at least near resonance—a much lower impedance than it. The gain where
. Electronic apparatus for biological research . Output Figure Figure obtainable. Thus a simple acceptor amplifier comprises a pentode having for its anode load a parallel tuned circuit {Figure ). The gain is^,„|Z, and we saw in Chapter 5 that V\) w^L &)^ Q' i + e 1/2 Since g^ is constant, the gain of the stage has the same form as \Zj,\ in Graph 25. Similarly a rejector amplifier might have the form of Figure The series tuned circuit is effectively in parallel with the load resistance and will have—at least near resonance—a much lower impedance than it. The gain where will be substantially g„i\Z 2\l/2 and the gain has the same form as \Zg\ in Graph 24. When we try to apply these circuits to the kind of frequencies commonly encountered in electrobiology we run at once into difficulties. Suppose it is required to build an attachment to an apparatus which selectively amphfies a rhythm at 10 c/s. Then co is about 60 and the LC product 196
Size: 2524px × 1981px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
