SanjKrish
Member level 3
Say I have an antenna or a microphone.. and I want to amplify the signal should I use a current amplifier or a voltage amplifier or a power amp and why??
Can a weak source like the antenna supply voltage or current.. I'm so confused on how voltage, current and power behaves..
Additional info.. Things which I know..
I read that for a voltage amplifier the input impedance should be high so as to tap all the voltage across the feeble input could provide..
for a power amp the input resistance should be equal to the resistance of our source say in our case the antenna
and a current amp will have very low resistance so that all the current flows across the input terminals of the amp...
Can a weak source like the antenna supply voltage or current.. I'm so confused on how voltage, current and power behaves..
Additional info.. Things which I know..
I read that for a voltage amplifier the input impedance should be high so as to tap all the voltage across the feeble input could provide..
for a power amp the input resistance should be equal to the resistance of our source say in our case the antenna
and a current amp will have very low resistance so that all the current flows across the input terminals of the amp...