Hi,
I don't know much about filters, read some things and that was more or less clear on a high level. But calculating such a filter would not be possible for me, based on a huge knowledge gap. I have an interest in this very old schematic, but it mentions an OKI ALP/2 and ALP/4 filter of which I could not find ANY information on the Internet.
I found this active low-pass filter calculator, but what OpAmp to use for my purpose (the less pin count the better, could a 741 be used?) and what Q-factor to set (I tried to understand some explanations about it) for the calculation with heading "Calculate the R and C values for the Sallen-Key filter at a given frequency and Q factor"? Or do I need to use that Damping Factor or maybe a totally different calculator. My goal is to have a simple schematic and BOM ;-)
I think the OKI ALP/2 is a 2KHz filter, but the text mentions a cut-off frequency of 1.7KHz... Do I need to set 1700Hz?
Thnx for your help!
I don't know much about filters, read some things and that was more or less clear on a high level. But calculating such a filter would not be possible for me, based on a huge knowledge gap. I have an interest in this very old schematic, but it mentions an OKI ALP/2 and ALP/4 filter of which I could not find ANY information on the Internet.
I found this active low-pass filter calculator, but what OpAmp to use for my purpose (the less pin count the better, could a 741 be used?) and what Q-factor to set (I tried to understand some explanations about it) for the calculation with heading "Calculate the R and C values for the Sallen-Key filter at a given frequency and Q factor"? Or do I need to use that Damping Factor or maybe a totally different calculator. My goal is to have a simple schematic and BOM ;-)
I think the OKI ALP/2 is a 2KHz filter, but the text mentions a cut-off frequency of 1.7KHz... Do I need to set 1700Hz?
Thnx for your help!