[622] AMZ Power Supply PCB

Date: April 28th, 2010 | Comments : [8] | Categories: DIY, power.

AMZ Power Supply PCB

This is the AMZ Power Supply pc board. It filters and regulates a DC voltage input and provides multiple 9v outputs that are suitable to power a full pedalboard.

It can also provide a negative 9v power supply for PNP devices, and has an 18v and multiple 9v connections. Read more about this pcb that can be used as the heart of your pedalboard power supply.

Convert the noisy voltage from your wall-wart into a smooth clean source of power for your pedals!

There are a limited number of these pc boards available.


[218] Tillman Fet Preamp

Date: September 27th, 2008 | Comments : [1] | Categories: amps, DIY, power.

Tillman Fet Preamp

The Tillman jfet booster circuit is widely known in the DiY effects community and often recommended for certain guitar fx applications. I recently saw the circuit posted on a guitar forum and realized that it could be built on my Multi-Purpose pc board.

I’ve modified the instruction page for the pcb to show how to use it to build the Tillman. The instructions and parts list are on the site that is emailed to everyone that buys one of the boards. Ordering info:

AMZ MultiPurpose PC Board


[159] Quick Rat pedal mod

Date: September 14th, 2008 | Comments : [18] | Categories: amps, DIY, power.

Rat2 schematicThe Proco Rat has become a classic pedal that has a legion of fans among guitar players. I have 3 of them, two Rat2 and a Turbo Rat.

The Rat is designed to have a large amount of gain and a significant treble boost. This is part of what gives it a characteristic sound, but also makes some players dislike the tone it produces.

The resistors R6 and R7 along with the capacitors C7 and C6, are the main determining factors for the low frequency rolloff.



[153] Make Magazine 15

Date: September 8th, 2008 | Comments : none | Categories: DIY, power.

Make Magazine Issue 15 features DIY music projects and circuit mod information. There’s plenty of interesting info in this issue, including an article about stompboxes. They even mention me by name a couple of times 😀


[64] Voltage Doubler PCB

Date: January 1st, 2008 | Comments : [11] | Categories: DIY, power.

Charge pump voltage doubler



[29] V-dub in da house!

Date: July 12th, 2007 | Comments : [13] | Categories: power.

Voltage doubler for guitar effects pedals

Double your voltage, double your fun!



[28] Pedal power booster

Date: July 2nd, 2007 | Comments : [2] | Categories: power.

Voltage doublers
From the work-in-process file comes this photo of a few circuit boards.

They are for an inline voltage doubler that will convert 9v to 18v for powering your effects pedals. The circuits on the two boards are actually identical but I ran out of the miniature capacitors used on the bottom board and had to go with the slightly larger blue ones shown on the board above.

More info when I get them mounted in an enclosure.


[22] AMZ Goes Solar (Part 2)

Date: June 10th, 2007 | Comments : [5] | Categories: power.

Solar bettery charger

AMZ goes solar – Part 2!


[5] AMZ Goes Solar

Date: May 15th, 2007 | Comments : [5] | Categories: pedals, power.

Solar battery charger AMZ Goes Solar!

Here is a shot of my new solar battery charger connected to a rechargeable 9v battery. I’m using these special batteries for all of my pedal testing.

The charger came from Harbor Freight and cost $12.

The rechargeable 9v was found on Ebay.



AMZ Home Page

Guitar FX PCBs