rakibulraju
Member
I am doing a project .For this project I need a power amplifier which will work at about 1Mhz with 20db gain.Can anyone please suggest me schematic of a power amplifier?
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I am doing a project .For this project I need a power amplifier which will work at about 1Mhz with 20db gain.Can anyone please suggest me schematic of a power amplifier?
The two resistors value should be such that R1 and R2 apply voltages to the output transistor bases so that Trl (NPN) base is about 0.6V more positive than its emitter, and Tr2 (PNP) base is about 0.6V more negative than its emitter, which is at half of VCC.Please help me to select the values of R1 and R2.You need to be more specific.
Power Amplifier (?) Output Power, Load Z
Voltage Amplifier (?) Input,
Purpose ?
Ramesh
The two resistors value should be such that R1 and R2 apply voltages to the output transistor bases so that Trl (NPN) base is about 0.6V more positive than its emitter, and Tr2 (PNP) base is about 0.6V more negative than its emitter, which is at half of VCC.Please help me to select the values of R1 and R2.
Your circuit has a voltage gain of 0db. Gain of 1 or slightly below 1. It has current gain.The two resistors value should be such that R1 and R2 apply voltages to the output transistor bases so that Trl (NPN) base is about 0.6V more positive than its emitter, and Tr2 (PNP) base is about 0.6V more negative than its emitter, which is at half of VCC.Please help me to select the values of R1 and R2.
I am not in love with this amp. But this has voltage gain. Not going to work at 1mhz. But it is a place to start.
View attachment 82431
That is what I get from grabbing the first amp I can find off the internet.At least stick some emitter resistors in there!
Oh, and put C1 the right way round