steiner filter problems
2006-03-30 by josh summitt
I have two steiner filters that i have built and neither one will work. I
have no output and the pots don't seem to do anything. When i touch the
bare metal of the resonance pot, the output buzzes real loud. I don't
understand what could be wrong. I have checked the resistors and caps
several times and they are all correct values and position. I have applied
an input to all three inputs and still nothing on both filters. Where should
i start looking for problems. My o-scope shows a sharp decrease in the
signal right after the first resistor on the LP input and i have no output
on the 2n3907.
any sugestions
thanks
Josh
[Non-text portions of this message have been removed]
have no output and the pots don't seem to do anything. When i touch the
bare metal of the resonance pot, the output buzzes real loud. I don't
understand what could be wrong. I have checked the resistors and caps
several times and they are all correct values and position. I have applied
an input to all three inputs and still nothing on both filters. Where should
i start looking for problems. My o-scope shows a sharp decrease in the
signal right after the first resistor on the LP input and i have no output
on the 2n3907.
any sugestions
thanks
Josh
[Non-text portions of this message have been removed]