One-way current?

[ExpAnonColin]

I'll try to let this image I made up speak for itself. I thought I could put some sort of diode bridge in there, but apparently, I can't?



-Colin

[Paul Perry (Frostwave)]

You put a very high input impedance buffer.

[ExpAnonColin]

You put a very high input impedance buffer.

So, if I used a unity-gain op amp, would that work all right?  How would it effect the outputted signal, other than the tiny tiny bit of noise that an op amp will produce?

-Colin

[Joe Davisson]

Current always travels one direction, from negative to positive. To block the current travelling up the resistor, you need a capacitor. If you add a capacitor in series with the resistor, the resistor will "load" the AC signal but no actual current will pass (called a snubber). It's best to put the capacitor right above the resistor, so the rest of the circuit is unaffected. You'll have to experiment with values somewhat, but it should end up reducing the volume or whatever you're doing without bothering other circuitry.

-Joe

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[Paul Perry (Frostwave)]

http://www.generalguitargadgets.com/v2/index.php?option=displaypage&Itemid=100&op=page&SubMenu=

here's the link to the discrete buffers a General Guitar Gadgets, can't do better than that!

[ExpAnonColin]

Joe-I guess I meant, how could I prevent what was placed "earlier" in the circuit from being effected by the resistance to ground?

Paul-Thanks, do you think I could use a 2n2222 in place of the 2n5089 successfully? Would a unity gain op amp work (high input impedance, low output, like you said).

-Colin

[Brian Marshall]

yeah, and straigten up that resistor... it's crooked... i hate crooked schematics.

It seems to me that you are working on some mad science projcect, and dont want to reveal it to us yet.

[Paul Perry (Frostwave)]

do you think I could use a 2n2222 in place of the 2n5089 successfully? Would a unity gain op amp work (high input impedance, low output, like you said).

-Colin

yes, and yes.
I have no idea whetherr the pinouts are the same for the 2N2222 & 2N5089 though. I always just test with a multimeter every bloody time..

[ExpAnonColin]

Brian-When I'm sitting on someone else's laptop with only powerpoint to make quick drawings, resistor straightness doesn't matter to me

Paul-Thanks, I'll let you know if it turns out.  I think I've substituted the 2n2222 for the 5089 a few times now... maybe it's time to get yet another stock of transistor values.

-Colin

[Brian Marshall]

Brian-When I'm sitting on someone else's laptop with only powerpoint to make quick drawings, resistor straightness doesn't matter to me

-Colin

power point... isnt that windows only... sorry you had to sink to the level of using a pc...  I now you are a mac guy...

i was just joking anyways:D

[ExpAnonColin]

Brian-When I'm sitting on someone else's laptop with only powerpoint to make quick drawings, resistor straightness doesn't matter to me

-Colin

power point... isnt that windows only... sorry you had to sink to the level of using a pc...  I now you are a mac guy...

i was just joking anyways:D

Nope, Microsoft office is unfortunately on both systems.

:wink:

-Colin

[Brian Marshall]

i'm a pc guy myself, but power point is the biggest pile of crap.. there are only 2 good things in office... word, and excel.  the rest of it is just CRAP.

Ever try building a DB in Access....

dont get me started