Are there any unnecessary parts in this HP filter
-
Now Available: Tech Talk Podcast with Scott Wilkinson, Episode 19 Click here for details.
1 - 15 of 15 Posts
That is the way I was instructed to install it. The "filter" is in parallel with piece of solid copper trace. Why would any portion of the current flow pass thru it? 19 0hm verses 0 ohms! There are photos in the install .PDF the I can't figure out how to copy and paste into a file that I can bring here. I brought it here because I am not an engineer and I though it could have merit that I don't understand. Before I contacted the supplier of the tweeter.
That is the way I was instructed to install it. The "filter" is in parallel with piece of solid copper trace. Why would any portion of the current flow pass thru it? 19 0hm verses 0 ohms! There are photos in the install .PDF the I can't figure out how to copy and paste into a file that I can bring here. I brought it here because I am not an engineer and I though it could have merit that I don't understand. Before I contacted the supplier of the tweeter.
Kinduva partial study in how not to draw a schematic. Not totally obvious intent, but suppose Noah's suggestion (not shorting out the RC leg), which is possible/probable in a strict reading, would make the resulting shunt leg a Zobel of sorts.
Internal curmudgeon wishes to point out the drawing does not instill confidence...
Internal curmudgeon wishes to point out the drawing does not instill confidence...
what is the tweeter u want to use this filter with? if u take out the wire even with 8 ohm tweeter u have a big attenuation, so either the resistors are in series with the coil and connected from 9uf cap to ground (but again the resistor values are too big imho) or the end of 7ohm resistor and.47u cap is connected before the 9u capacitor.
Joined
·
1,657 Posts
I think the wire that looks like it "shorts" out the two resistors is not supposed to be there.
If that was removed-it would look fine-assuming it was designed for the particular tweeter AND woofer you plan on using.
But there are also other ways those same parts could be "arranged". It depends on the particular response needed.
If you are not using the particular parts the circuit was intended for-then there is no way to know if it will work properly-but probably not.
If that was removed-it would look fine-assuming it was designed for the particular tweeter AND woofer you plan on using.
But there are also other ways those same parts could be "arranged". It depends on the particular response needed.
If you are not using the particular parts the circuit was intended for-then there is no way to know if it will work properly-but probably not.
I'm not sure what you are asking. I drew the schematic based on the parts supplied and the circuit board they went into. I think it is a classic 2nd order filter with a "McGuffin" added or, his circuit board is not like mine and the "addon" should be going to grd. after the first capacitor. I'm getting a second opinion before I open a can of worms with the supplier. This .PDF shows how to install, there is a picture of the add on.
http://www.skiingninja.com/v/vspfile...us-upgrade.pdf
I'm not sure what you are asking. I drew the schematic based on the parts supplied and the circuit board they went into. I think it is a classic 2nd order filter with a "McGuffin" added or, his circuit board is not like mine and the "addon" should be going to grd. after the first capacitor. I'm getting a second opinion before I open a can of worms with the supplier. This .PDF shows how to install, there is a picture of the add on.
http://www.skiingninja.com/v/vspfile...us-upgrade.pdf
Joined
·
526 Posts
That is actually to IEEE standard for drawing a schematic, iirc. Two lines that cross are only connected if there is a dot over the intersection. I guess people just got tired of drawing little loops over crossing wires
![]()
.
That is actually to IEEE standard for drawing a schematic, iirc. Two lines that cross are only connected if there is a dot over the intersection. I guess people just got tired of drawing little loops over crossing wires
"I'm not sure what you are asking."
Instead of guessing what the circuit is, ask whoi you got it from.
"Two lines that cross are only connected if there is a dot over the intersection. I guess people just got tired of drawing little loops over crossing wires ."
Then dots are missing in other locations.
Instead of guessing what the circuit is, ask whoi you got it from.
"Two lines that cross are only connected if there is a dot over the intersection. I guess people just got tired of drawing little loops over crossing wires ."
Then dots are missing in other locations.
"That is actually to IEEE standard for drawing a schematic, iirc. Two lines that cross are only connected if there is a dot over the intersection. I guess people just got tired of drawing little loops over crossing wires ."
I didn't know about the dots, but I do remember the "jump over loops". Please put dots at all the intersections as they are all connected. There are no jump over loops in the drawing.
I didn't know about the dots, but I do remember the "jump over loops". Please put dots at all the intersections as they are all connected. There are no jump over loops in the drawing.
1 - 15 of 15 Posts
