Jim Tonne, who writes some interesting software for ham radio and EE use (http://tonnesoftware.com/) has come up with a program to calculate resistor values for DIY stepped attenuators.
You specify number of switch positions, end-to-end resistance, and dB/step. It tells you what resistors to use.
I don't think the program is linked from his home page, but you can download it here:
http://www.tonnesoftware.com/downloads/VolumeControlInstall203.exe
Pete
You specify number of switch positions, end-to-end resistance, and dB/step. It tells you what resistors to use.
I don't think the program is linked from his home page, but you can download it here:
http://www.tonnesoftware.com/downloads/VolumeControlInstall203.exe
Pete
3 dB steps
Who else thinks that 3 dB steps are quite ok?
I noticed this when I used a remote controller to adjust volume. Usually I noticed that when I did, I had to do more than 10 dB adjustments and 3 dB would be a fine adjustment.
I know that 3 dB step in signal level means double or half power, but still, this is what I noticed.
Who else thinks that 3 dB steps are quite ok?
I noticed this when I used a remote controller to adjust volume. Usually I noticed that when I did, I had to do more than 10 dB adjustments and 3 dB would be a fine adjustment.
I know that 3 dB step in signal level means double or half power, but still, this is what I noticed.
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