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Power amplifier for more than 30kHz

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isurunalaka

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Could you please give me power amplifier circuit for more than 30kHz output signal?
 

Hi,
This is a great amplifier...
 

Could you please give me detail design(exact components) for this circuit?

---------- Post added at 13:48 ---------- Previous post was at 13:40 ----------

What is the power rating for above circuit?
 

Sure
Q1 : “BC212” or “BD136”
Q2 , Q1D: “BC286” or “BD135” or “BC337-25”
QBE:“BC107”
Q1M , Q2M: “2n3055”
Q2D: “BC287” or “BD136” or “BC327-25”

Please change the value of RB1 to 330k ohm (value in the figure is 270 ohm) and also change the value of R2 to 0.5k ohm (value in the figure is 1k ohm).
first put the frequency=1k Hz then gradually increase the frequency to see which frequency is the best to operate (because I myself have forgotten the best value of frequency for this circuit :D)
 

Hi dear isurunalaka*
what's your BW ?
what voltage you will to give ?
my friend there are many way for this , but at first you must say your details that you want .

Best wishes
Greentree
 

moottii said:
Sure
Q1 : “BC212” or “BD136”
Q2 , Q1D: “BC286” or “BD135” or “BC337-25”
QBE:“BC107”
Q1M , Q2M: “2n3055”
Q2D: “BC287” or “BD136” or “BC327-25”

Please change the value of RB1 to 330k ohm (value in the figure is 270 ohm) and also change the value of R2 to 0.5k ohm (value in the figure is 1k ohm).
first put the frequency=1k Hz then gradually increase the frequency to see which frequency is the best to operate (because I myself have forgotten the best value of frequency for this circuit :D)
Click to expand...

What is the input voltage range for this amplifier?

---------- Post added at 19:41 ---------- Previous post was at 19:38 ----------
greentree said:
Hi dear isurunalaka*
what's your BW ?
what voltage you will to give ?
my friend there are many way for this , but at first you must say your details that you want .

Best wishes
Greentree
Click to expand...

Actually input voltage range is not a issue im my case. I just wanna power amplifier for 30kHz-60kHz range. The thing is all amplifiers in the internet are for the audible frequency range(20Hz-20kHz).
 

Hi,
As I told you befor I have forgotten the range of frequency and input voltage(This amplifier was my electronic homework)
You can simulate it in PSPICE.It takes about 10 min.
 

i jst draw it and i stl struggling with that. Would u mind having a look on it?
 

What are you going to use it for? If it's for audio, there's no point, since you can't hear above 20kHz.

If it's for switching such as for inverters, you can use simple drivers and MOSFETs and the circuit will be pretty simple.

Hope this helps.
Tahmid.
 

I want it for 30kHz-60kHz range. I gonna use signal generator to get a small power sinusoidal signal and then use power amplifier to get the required power(up to 20W) because i wanna drive a preignited CFL tube using that. What are the circuits available with Mosfets?
 

Hi
Yes! tahmid said exactly true. why you want a audio amplifier for more than 30khz ? you can't hear it.
If your BW is 20-20khz , know you must say about watt.
For example you can use a class D amplifier for all of powers or if your power is low, even you can use a ic ... .
For each project you must know details that you want. I think it's better because you don't confuse with this methode .

Best wishes
Green tree
 

1) note that v5 at output is connected with v5 supplying 24vdc thtu rb4 to q1 emmiter.
2) this circuit has a problem needing 12 v working q1m and q2m always working so efficiency problem , better using a +/- 25v voltage getting zero at output when idle.
check out this link ... fig 2, google "dc power amp" and get mamy many more.**broken link removed**
voltage
moottii said:
Hi,
This is a great amplifier...
Click to expand...
 

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