PR & R Stipulation & Order Form

Instructions and help about PR & R Stipulation & Order

In the previous video, I talked about the need  for a voltage amplifier to have a large input   impedance, a small output impedance, and  a well-defined gain that one can control   in the circuit. The particular microchip that  you're seeing here is called the LM741 op-amp,   and it's a popular type of amplifier  that I'll describe in this video. As you might notice, there's no dial on this  microchip where you can say, 'Okay, give it a gain   of two, give it a gain of three, give it a gain of  100.' This particular amplifier just has a very,   very large built-in gain, and we're going to have  to use other circuit elements connected up to   this microchip in order to actually control  the gain. Let me show you how it's done. This is the circuit symbol for an op-amp or  operational amplifier, like the LM741. Unlike   the amplifier that I showed in the previous video,  where it had only a single line at the input and a   single line at the output, this is a typ