I apologize if this is in the wrong forum... I'm unable to post in the Power forum.
I'm wondering if the diodes in the voltage doubler circuit shown here act as reverse polarity protection as well.
(Actual 'doubled' voltage is closer to 16V)
Thank you...

So I rehoused a Boss DS 1 to a new 125B enclosure and made it true bypass,but I think Im having problems with the DC jack. What is the correlation from the PCB mounted DC jack to the round barrel type DC Jack? This is probably very easy to most, but I'm not the most experienced modder so, as always, Im super appreciative of anyone who can help me out. Thanks
51141da0ce395fe67e000005.jpg
DC_Jack_combo.jpg

Hello
I am looking for a veroboard layout for a ChargePump from 9VDC to +15V -15V ...
I have found 9V to +/-12V, +12>+15V, but not 9V>+/-15V...
Do you know any veroboard layout around for such thing, please ?

Hello everybody.
Once again I decided to take an interest in protection from reverse polarity.
In classic pedals we have 2 popular protection options.
1) 1N4001 at which we lose tension
2) 1N4148 which works like a kamikaze
Both options are popular, but have the disadvantages described above.
Tell me more about the p-channel mosfet.
I understand correctly that it does not burn like 1N4148 and does not make voltage drop like 1N4001?
There are many variants of these transistors, what...

I have a 3 pedal board that i supply power to via a single wall art with plenty of current. I have tried several good supplies for this and all have created various noise issues. What i finally did that quieted it completely is to add filer nodes to each supply consisting of a series resistor and cap configured the same as in a tube amp. My question is about the values. I used what i had just to give it a shot but now that i know it works i will build a small box for all the filer nodes and the...

Hi, if I have two circuits, how do I have to do it to join them in the power supply section? I attach the images as an example, if someone can help me.
Thanks

Hi
In the world of stompboxes, there are many ways to protect the circuit from the wrong polarity
But the most common are circuits using diodes 1N4001-1N4007 or Schottky diodes (usually 1N5817).
I attach the schematics below

Advantages of the scheme with 4001 - no loss of voltage
Lack of 4001 - the circuit does not always save, the diode can fail and the circuit will burn, it can also burn the power source
The drawback of the circuit is from 5817 - it gives a voltage drop of 0.45 volts.
Are...

Hello everyone, a question of a beginner
So it is necessary to bring to each component a separate power line (in the figure below from the main line, each component has its own line)

In the second figure there is one line on which all components are connected, that is, the current passes through 1 of the component's legs and then goes to the next

Are there any differences in sound and noise or there is no difference?

Hello, I'm writing just to ask if you could explain to me if I can power my MXR Distortion+, current version (M-104 model..) with 12V instead of 9V.
The fact is, I read many threads about this pedal and, since I'm mostly trying to avoid clipping from the opamp itself, I was hoping if raising the voltage a little bit might help me some.
Would I damage some electrolytics or some other parts?
Thank you very much in advance, I hope you can help me

Hi,
how to design a really low noise power supply ?
I built a lot of stuff but these never satisfy me too much...

Hi,
into the PCB is rated 300mA it is just before the 7809 regulator.
This is the link to the project :

Hello
Recently assort projects from the madbean
I can not understand why different schemes in different diodes
about half the time it 1n5817 in other schemes is 1n4001 in jhs kit is P6KE22A
so I had a logical question
how to understand where any use of diodes?
Whether these diodes are interchangeable in power supply filtering circuits?
which will be better and why?

Clever idea... and very DIYble

A Power surge from badly grounded amplifier killed my DIY stompbox (a fuzz pedal), which worked before on other amplifiers.
I just moved to a place where not all electricity sockets are grounded and i didn't thought this might be such a big issue.
Factory made EHX pedals don't explode when exposed to this situation. Is there an easy way to protect a circuit against such
situation in the future?

The FX went down after connecting to amp and there was an electrical spark seen going from the...

Hey all...
Quick question about this one...
Looking at the schematic here
Red wire from battery Power goes into the FX Circuit board from +V and the 0V would be ground? ( connect ground wire to RBase along with the battery black wire and then to the sleeve of the jack)
That is how I am understanding the schematic anyway...
I want to try this out with a pedal I have that is high gain that oscillates and hopefully this trick will solve that issue, or at least help out.

Any help much...

Hey guys - I'm new at this and don't want to electrocute myself so I thought I'd better ask.

I have an old laptop power cord that is rated at 19.5 v DC @ 3.16 A that I have used to provide power to my breadboard. Since most of the projects require 9 volts, I placed a guitar pot in between the power cord and the breadboard, and using my multimeter I dialed the pot down to get 9 volts at my breadboard. I've read on this forum somewhere that too much power is generally not a problem because the...

Hey Guys,

Quick question, if I have 10V at 500mA running into a 5V Regulator (rated at 2A for argument sake) does this mean I have 5V at 1A available (nominally) on the output of the regulator? Any input is greatly appreciated.

Thanks!

I'm working on a BYO boost, and I'm trying to find out if there's any way I can filter the dc power jack for any noise that might originate from my wall warts. Any ideas?

I understand that it has 8 isolated 11V AC outputs and a 9V AC out. Have any of you used it before? Good results with it? Does it come with 20 leads and is each pair individually labeled?

Thanks!
-Bruin2k3

Hi,

I was looking to buy a current doubler cable for my Voodoo Labs Pedal Power 2.
But then it hit me: can't I just use a standard daisy-chain cable to increase the current capacity?
If I connect 2 pins of the daisy-chain cable each to one 250mA output, don't I get 500mA on the other free pins on the daisy chain to use for FX pedals?

Hi, I build a pedal 9V power supply
using a internal PCB trasf. having 15V out stabilized with diodes caps and regulated with 7809 etc... (standard stuff...

It work ok (silent) with 3PDT switch but as I use it with relay switch pedal
it is really noisy..lot of hum.. is it a frequency problem or what ???

hi, i have make a tone bender, but im not sure how to wire my 3pdt, do i just change the negative lead for the positive lead in the wiring, but if i do that, i would be giving positive voltage to the guitar jacks, or that its the way to wire it?

Ok I have A level physics (an exam at age 18 in the UK) so have smattering of theory.
I HAVE GOT MY HEAD AROUND POSITIVE EARTH/NEGATIVE EARTH - no problem..

But why do I get a shock from my wah wah when I'm powering it from a mains 9v PSU?
The PSU is in one wall socket, I'm sat holding my guitar which goes into an amp, plugged in to another wall socket.
Obviously this is a low 9 volt shock but I'm surprised I can feel it quite strongly, like an ant bite.
I suppose I'm just making a circuit...

Hi all. Been a while since I've been around but finally getting back into dabbling again :)

I've been putting together a pedalboard and the idea of powering it is on the table. As a typical tinkerer, I'm looking for a good DIY way before dropping the cash on a big dollar Voodoo or similar setup. Looking at lots of ideas like the Weber transformer and the Spyder setup, both very easy project ideas but both could cost at least a moderate sum and the bulk is an issue. Then I had an idea.

I work...

Hi,

*** n00b question warning ***

I wonder why it is needed for most effects to drain the battery while the effect is OFF? Especially for true-bypass effects.
It would seem very easy to me to make the switch break the circuit so the battery is not drained while the effect is OFF.
I'm guessing the reason why this is not done is because there would be audible pops when powering the circuit, or a delay before the circuit is fully powered and working? All of this does not really seem...