Bissoy.com
Doctors Medicines MCQs Q&A

Which transformer is used for impedance matching in transistor coupled amplifier?

Which transformer is used for impedance matching in transistor coupled amplifier? Correct Answer step-down

Usually the impedance of an output device is a few ohms whereas output impedance of the transistor is several 100 ohms. In order to match the impedance a step down transformer of proper turn’s ratio is used. The impedance of secondary of the transformer is made equal to the load impedance and primary impedance equal to the output impedance of the transistor.

Related Questions

What is the minimum power rating required for a transistor used in class A amplifier with a single transistor if the amplifier delivers 50 W to a transformer-coupled load? Assume that the transformer is ideal?
After conjugate impedance matching the input impedance used for matching after normalization was 1+j with the characteristic impedance of the transmission line being 100Ω, then the generator impedance must have been:
If a single section quarter wave transformer is used for impedance matching at some frequency, then the length of the matching line is:
A single section tapered line is more efficient in impedance matching than a multisection tapered line for impedance matching.
When impedance matching is done between a resonator and a feed line, the condition for impedance matching is:
In which of the below-mentioned logic families, the transistors operate between cut-off and active (non-saturation) states? (i) Transistor-Transistor Logic (TTL) (ii) Schottky TTL (iii) Diode Transistor Logic (DTL) (iv) Emitter Coupled Logic (ECL) Choose the correct answer from the code given below: Code:
Which of the following transistor amplifier configuration is used as a buffer for impedance matching. 
A two wire transmission line of characteristic impedance Z is connected to a load impedance ZL(ZL and Zo are not equal). Impedance matching cannot be achieved with
In transistor amplifiers, we use ___________ transformer for impedance matching
Calculate the overall voltage gain Gv of a common source amplifier for which gm = 2mA/V, RD = 10 kΩ, R0 = 10 kΩ and RG = 10 MΩ. The amplifier is fed from a signal source of Thevenin resistance of 0.5MΩ and the amplifier is coupled with a load of 10 kΩ.