Inverting Amplifier Uses Two Class AB Amplification Isolated Cells

Published:2013/3/15 4:19:00 Author:Ecco | Keyword: Inverting Amplifier , Two Class, AB Amplification , Isolated Cells | From:SeekIC

Transistors are used often as the three lead-amplifying devices, in which the voltage input and output signals are measured from the total output. Thus, the input and output tied to the voltage on this pin. On the other hand, the four pin power allows you to unleash the input and output circuits. Using optical isolation, you can create a four-pin power class AB. Since the magnitude of the output voltage optocoupler limits its use, you can use discrete transistors for the isolated amplifier. On figure 1 is a simple, inverting amplifier with class AB output signal amplitude value 1 kV, which uses two identical amplifying cells. Frequency response amplifier gain full located in the region from DC to 20 kHz. You can provide gain and higher frequencies, but at a lower value of gain. Ratio of resistors R1 and R2 set the gain. This scheme eliminates the need for multiple components to the level shifts, which are commonly used in standard construction of the scheme. Positive and negative cells gain controlled in opposite phase.



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