stuartah

I know what you mean, and I'm working on getting a pickup design for multisim, but for now all I've been able to do is test the various signals and test the charge times When I get a more real source, or I actually have the ability to test this as a real world circuit, we can pick this up again. but the one thing to remember, I put those transistors in there so as not overload the source.

also, besides trying this for the signal output, it'd also be interesting to apply it to some lights on your guitar, like the old rickenbacker guitars

The caps held sustain while the one of the zener models is effectively a battery. In this circuit the zener diode draws more and more current to boost the circuit to that 10v mark in this case. While it may be that you wont need the 10v always there it is simply to force the circuit to have a supply for the op-amp. yeah, but the "breakdown voltage" of a 5V zener diode is 5V. Where is that circuit ever going to see 5V from passive guitar pickups that only output an instantaneous max. of of 2V PTP? You need to have it built because I think your circuit simulator in this case is not a reflection of the real world. Like I said earlier, there's a half a second of charging period, where the zenor charges up to the voltage its set to. Zener diode will pull as much current it needs to charge to its break down point

The caps held sustain while the one of the zener models is effectively a battery. In this circuit the zener diode draws more and more current to boost the circuit to that 10v mark in this case. While it may be that you wont need the 10v always there it is simply to force the circuit to have a supply for the op-amp.

The number of caps is to make sure that all the frequencies are taken out and moved to a near flat line voltage. Caps in parallel add and the fact that when the signal is removed the caps discharge slower and allows for time to pick the next note, rather than having an instantaneous discharge would could harm the op-amp or other components. But the real answer is having one small cap would not cut out the low frequencies and in fact would block them from having a proper charge. The zener diodes are their to help the caps sustain that voltage for when the signal dips below the negative line. Basically the number of caps are their to act as a sustaining tool

That is very true, but at a 500ohm or less for the negative feedback loop, you get a nicer more "beef" sound if you will more or less you get it to that DS area in which there's only distortion when the peaks hit their highest for the voltage output along that line I'm getting someone who has the ability to actually make this mess with it.

Yeah, thanks ^^ But the idea was just to simply give it a "beefier" sound not actually send it into OD every time it ran. The thought also was to put it into a DPDT switch design so you wont always have that OD signal. My original design I think will somewhat work, but the beefing section is so little and like you pointed out its hard to measure the out put on a changing signal since the computer hates variable. The one thing I did notice was that when removed the DC output slowly decase as it also slowly rises. The main thing for this was to simply give a player something play around with like for a solo or something. And the other reason was the thought of the whole battery thing. The "nothing comes for free" saying applied here by taking more room in the guitar by never having to replace the batteries into a small compartment. Edit: I just noticed this, and I've been working with op-amps for a year now, but the voltage output at the rectifiers is directly proportional to the resistor in the feedback loop on the op-amp

Yeah, thanks ^^ But the idea was just to simply give it a "beefier" sound not actually send it into OD every time it ran. The thought also was to put it into a DPDT switch design so you wont always have that OD signal. My original design I think will somewhat work, but the beefing section is so little and like you pointed out its hard to measure the out put on a changing signal since the computer hates variable. The one thing I did notice was that when removed the DC output slowly decase as it also slowly rises. The main thing for this was to simply give a player something play around with like for a solo or something. And the other reason was the thought of the whole battery thing. The "nothing comes for free" saying applied here by taking more room in the guitar by never having to replace the batteries into a small compartment.

Yeah, thanks ^^ But the idea was just to simply give it a "beefier" sound not actually send it into OD every time it ran. The thought also was to put it into a DPDT switch design so you wont always have that OD signal. My original design I think will somewhat work, but the beefing section is so little and like you pointed out its hard to measure the out put on a changing signal since the computer hates variable. The one thing I did notice was that when removed the DC output slowly decase as it also slowly rises. The main thing for this was to simply give a player something play around with like for a solo or something. And the other reason was the thought of the whole battery thing. The "nothing comes for free" saying applied here by taking more room in the guitar by never having to replace the batteries into a small compartment.

I've only done this in virtual, but in theory it works, and when I measured the components the amperage maxes about 1mA Next, anyone remember the ideal model of a zener diode? I kicked the two virtual zeners up to about 20v and dang it kicked the amps up to about 2mA and looking at the output it just blasted that thing to kingdom come

solo frequencies: Also, if anyone noticed, channel A of the top oscilloscope, was halved, this time they are even. Added in this also has different frequencies to follow. the one you are mostly looking at is the 5KHz frequency as the other two are too slow, but you can see the waves fluctuate. Next, what you can't see is that these higher frequencies do take time to charge up the caps, but when they do they work fine and the charge takes no more than one second.

Okay guys, this is it: simply the 3 power supplies represent the pickups, wile being wired in series for the normal signal, the signals are then tapped by a series of transistors, that amplify the the signal into each other. Next, two parallel diodes split the signal as it goes into a rectifier circuit. The number of caps are their due to capacitance adding in parallel and it takes out all the frequencies and forms it into a DC voltage. Next, a 5v zenor diode is added, pushing the voltage up to 5v by adding even more amps. The final outputs should be a near 5v positive with a small, very small glitch every so often. while the Negative side had more glitches, but stayed around -5v DC. These two outputs are then fed into an Op-amp who is also receiving the normal signal from the pickups. The op-amp then attempts to blast the signal to 5v in this case due to the high resistance on the negative feedback. In a normal guitar the op-amp should be hooked into a signal via a DPDT switch.\ The two oscilliscopes along the side are as follows: Top: Output from supply and op-amp out Bottom: DC voltages from the rectifier circuits

I'm not going to deny you guys are right, but at the same time, when I was looking at the op-amp output you could get some interesting OD sounds

For the most part all of your guy's knowledge is correct, I will add in the 1vpp and 2vpp test and see what that outputs, the scematic is the same as a normal rectifier circuit, but since the frequencies are viable, I had to put in several caps in parallel instead of one 47uF But I would like to say the people trying to explain the theory on inductors did give me a few more ideas to test.

I'm currently having a lot of fun with this circuit, if its not obvious, but right now I'm trying to throw in a transformer to see what kind of deal I can pull out there. If anyone wants to try this when I'm done, go ahead.