"midband" - 1 õppematerjal

Piletid vastustega

2 50 2000 5000  Ticket No8 1)Differential amplifier, or diff amp circuit.2) 3)Figure presents a general form of a diff amp that is termed a long-tailed pair because R E is called a tail resistor.It has two inputs:U1 and U2.Because there are no coupling or bypass capacitors, the input signals can have frequencies all the way down to zero, equivalent to dc, and the amplifier has a broad midband and high stability.The output signal is the voltage on the load connected between the collectors.Ideally, the circuit is symmetrical with identical transistors and collector resistors. 4)dc,voltage device.5)analog. 6)ADVANTAGES:Because there are no coupling or bypass capacitors, the input signals can have a wide range of frequencies and the amplifier has a broad midband and high stability.Other benefits are high amplification and low clipping.MAIN FEATURES:Signal