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I removed R13 and R17.After removing that , the hum without any input is no longer there.The output is very clean now.
I ddn't have to remove R7 cause now there is no hum at the output now.
Also with 1 ohm and 0.22uF at the output ,the frequency cut-off will be 723KHz.Is that cut-off a bit on...
I have removed the input source.Still there was hum.After isolating the resistors R13 and R17,there was no more hum.I don't know the reason why isolating the resistors removed the hum.
Also earlier I posted after reversing the direction of C8,Solved the issue of transistor getting heated up.But...
I have attached the pdf file of schematics and board file.
The circuit is working fine now.i have reversed the position of capacitor C8 shown in the schematics.Now the +ve side of the capacitor is placed to the input of the audio signal.But i don't understand why changing the capacitor position...
I have attached my sch and pcb files.I haven't connected the diode to the base of npn transistor as you can see in the schematics.Do i need to connect C8 in my schematics in the opposite direction?
As you have mentioned,the diode should be connected to the output only (pin 4)as shown in page 5.Anyways i will try this change and will let you know the result.
I am trying to build the active cross over circuit of TDA2030 given in Page 9 in the attached pdf.When i power up the circuit with 12V input power supply,The pnp transistor BD908 is getting heated up.(I am using TIP42C instead of BD908).Can anyone let me know why this is happening.I have...
I would like to know what does Normalized Gain mean.I am going through LMH6554 and there are lot of graphs showing Frequency vs Normalized gain(page 7 on datasheet). The Normalized Gain is 0dB for different voltage gain.What does this actually means?
Also i would like to know what is input...
So if we are using the fsmc bus, is there any clock signal involved during communication?Since the display datasheet is talking about a system clock,so how should we give the clock needed for the display?
Also in the stm32f10xC datasheet,on page 68,there is a table showing the write...
I would like to know whether it is possible to interface stm32f103vct6 with winstar display WF70Q using FSMC bus?
I would like to print moving images on the display.the datasheet for both are attached.
Also if it is possible to interface,which fsmc topology do we need to use?is it asynchronous...
Your explanation is clear.i understood the calculation.
Just one more doubt.
is the circuit reverse.Like.
First the non inverting input gets a voltage ->goes to inverting input->causes a current flow through the sense resistor->causes a voltage source at the gate for the required current.
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