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Insert the LED leads into the corresponding pads as shown above. If you wish to change the color of the On Status then simply flip 
the LED to change to the cathode of the color you wish to use. R5 is the Current Limiting Resistor. Use a value from 1k8 to 4k7. 

TIP: Use a 3v to 5v coin battery to test your LED before installing. Note: 9v direct will blow the LED. 

 

 

 

Summary of Contents for AfterBlaster

Page 1: ... up when viewing the gut shot of the pedal DIP SWITCHES are usually available in our SHOP PARTS LIST Build Notes Be sure to Socket R4 See build notes below for details 2 4k is only an average value to get MPF102 J113 or 2N5457 close to the wanted 4 5v to 6v reading on the Drain leg of Q1 Google for the Datasheet for whatever transistor you are using Q1 You may use a J113 MPF102 replacement or chan...

Page 2: ... voltage of Q1 and adjust the resistor to achieve the exact results you like Remember every MPF102 is going to be different so 2 4k is a working approximation The preferred voltage range for the Drain of Q1 to ground is between 4 5V and 5 0V Once you find the perfect resistance you can solder it to your socket Again this is an optional procedure It is very convenient to use 4 connected socket sect...

Page 3: ...o change the color of the On Status then simply flip the LED to change to the cathode of the color you wish to use R5 is the Current Limiting Resistor Use a value from 1k8 to 4k7 TIP Use a 3v to 5v coin battery to test your LED before installing Note 9v direct will blow the LED ...

Page 4: ...57 for a bit more grit when turning it up than a cleaner MPF102 will provide As usual Bias from 4 5v to 6v to suit your rig and ears You will need to socket R4 and find the correct resistor If you wish to try a J201 even more available grit you will have to socket and adjust R1 and increase as well as possibly socketing R4 and adjusting till you can attain in roughly 4 5v to 6v on the Drain leg of...

Page 5: ...ial on Youtube Before beginning any build or if you have questions please see our Guides Page on our site The Guides Page is located in the Main Menu Bar of most pages Also we have a dedicated forum for questions about your build This document PCB Artwork and Schematic Artwork GuitarPCB com Schematic and PCB design by Bruce R and Barry Build Document by Barry All copyrights trademarks and artworks...

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