电工学原理及应用(Electrical Engineering)经典双语详解讲义 (4)
In this article, we are going to learn about the internal circuit of an op-amp IC. Along with that, we are also going to learn about the ac equivalent circuit of op-amp. Pin Diagram of an Op Amp IC The op-ampICdiscussed in this article is theIC 741, which is an 8-pin integrated...
It also has a high-impedance collector (or drain) load, to give it a large amount of signal-voltage gain (typicallyabout 100 dB).Figure 3.3 Simplified Op amp 16、Equivalent Circuit(The basic operation of an op amp can be simulatedusing discreet components as shown.)The output of the ...
It can be shown that the Laplacian of the potential ϕ is (2.6)∇2ϕ=−Isσ where ∇2 is the Laplacian vector operator, Is is a source current, and σ is the conductivity. This is equivalent to the Poisson equation for dielectric media, (2.7)∇2ϕ=−ρε where ρ is ...
The equivalent circuit of an NPN transistor is as shown in the figure below. Equivalent Circuit of an NPN Transistor As a quick reminder, an N-type semiconductor is one where a large number of free electrons are available and it acts as a majority charge carrier. Under the influence ofpoten...
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An electrical circuit consists of power sources like amplifier or generator and electrical load like a light bulb or transmission line have a source impedance. This source impedance is equivalent to resistance in series with reactance. According to the maximum power transfer theorem, when the load ...
The open circuit voltage of both the sources is V and short circuit current of both sources is I. The sameresistance connected in seriesin voltage source is connected in parallel in its equivalentcurrent source. So, these voltage source and current source are equivalent to each other. ...