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Bandpass filter
Hi guys,
I wanna to design a bandpass filter of bandwidth = 1kHz, i wants the center frequency to be able to shift about.
For example, i can tune it to fc of 2kHz (BW=2.5kHz-1.5kHz = 1kHz) and later i wanna to set the fc to 5kHz. How should i do if i am only using the RC...
filtering noise
Hi guys,
Question :
i am designing a voltage amplifier with AC input. The frequency is (1KHz to 8KHz).
As i increase the frequency value, the noise also increases. Is there a way i can get rid of the noise.
This is also happening when i increase on the voltage supply. How to...
Bandpass Filter
Dear All,
I am designing a band pass filter for my FM demodulator. I use the RC circuits (1K to 8K), but when i connect the output to the spectrum, it does not filter away the frequency below or above.
I try putting the BPF to my circuit, but the result is the same and it has...
Re: creating voltage supply
hi all,
i need 3 different voltage supply to 3 different circuit on the same board so how should i do? If using the op amps how should i connect?
The 3 voltages are 5V, 10V and 20V
Thanks,
Raintree
bridge rectifier 5v 10v voltage supply
Hi all,
If i want to make 3 voltage supply of 5v, 10v and 20v, how should i connect? Is it possible to have a supply of 5V and from there, i amplifie to have 10v,20v?
If using this, the supply voltage for the opamps need to be above 10V. what should i do...
voltage amplifier
Dear all,
I am making a voltage amplifier. Is it better to use op amps or transistor?
If best using op amps, how should i connect it?
Thanks
Raintree
Re: voltage divider circuit
hi all again,
Thanks all for the help! the load i am giving it is larger than the resistors, so does it means that the loading effect of the loads will affect a lot on the voltage???
djalli,
Can you explain more? is it that i had use op amps for the voltage...
voltage divider circuit
dear all,
i have a question here. i am building a voltage divider using two 1K resistor and using the voltage divider rule. It works well on the breadboard with 10V input and 5V output but once it is solder on the PCB board, the value becomes very small and i had to...
Frequency demodulator
Hi all,
i need help here! I am designing a FM demodulator of f0=5MHz, Fm=1KHz and Δf =10KHz using the IC of NE564. But i need to increase the frequency deviation (Δf),
How should i do to increase it? Can i change the capacitors for the loop filter (LPF) ?
the pdf...
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