VO= -(Va+Vb+=-(1.2+3.2+4.2)= -8.6v. 4. In which type of amplifier, the input voltage is amplified by a scaling factor
A. Summing amplifier
B. Averaging amplifier
C. Weighted amplifier
D. Differential amplifier
Answer:A
VO= -(Va+Vb+=-(1.2+3.2+4.2)= -8.6v. 4. In which type of amplifier, the input voltage is amplified by a scaling factor
A. Summing amplifier B. Averaging amplifier C. Weighted amplifier D. Differential amplifier
Explanation: The weighted amplifier is also called as scaling amplifier. Here each input voltage is amplified by a different factor i.e. Ra,Rb and Rc are different in values ( which are the input resistors at each input voltage). 5. An inverting scaling amplifier has three input voltages Va, Vb and Vc. Find it output voltage?