questions on electronics ?????

Thread Starter

sunil_r_sp

Joined Feb 18, 2007
13
1) Why is opamp called a direct coupled (dc coupled) amplifier ?
2) A normal voltage or curent amplifier provides power gain...then why do we go for power amplifiers for increased power ? cant we use a cascaded amplifier stage to achieve the required power ?
3) How is the digital ground different from analog ground ?
4) How is a cmos inverter an amplifier ?
 

Dave

Joined Nov 17, 2003
6,970
1) Why is opamp called a direct coupled (dc coupled) amplifier ?
2) A normal voltage or curent amplifier provides power gain...then why do we go for power amplifiers for increased power ? cant we use a cascaded amplifier stage to achieve the required power ?
3) How is the digital ground different from analog ground ?
4) How is a cmos inverter an amplifier ?
As a suggestion, why don't you give us what you think are the answers to these questions and we can help you from there. Learning on here is a two way process.

Dave
 
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