- BK BUTLER TUBE DRIVER POWER MOD FULL
- BK BUTLER TUBE DRIVER POWER MOD PLUS
- BK BUTLER TUBE DRIVER POWER MOD SERIES
- BK BUTLER TUBE DRIVER POWER MOD FREE
BK BUTLER TUBE DRIVER POWER MOD FREE
Please feel free to ask any relevant (or irrelevant ) questions regarding this project My thanks to Dirk Hendrick and B K Butler for their inspiration in the creation of this project.
The solder used was Ersin Multicore Savbit 60/40 crystal Flux non rohs too. I used metal film resistors and MKT polyester 100v capacitors. No MOJO parts were used in the construction of this project i soldered these by soldering from the top and sweated the solder between the pot wafer and circuit board.
I tinned the board first before I attached the three control pots. When attaching the footswitch, raise it slightly above the circuit board - do not push it down hard against the board, otherwise you will not get enough thread through the top of the case to attach the mounting nut. The 7915 regulator needs to be raised at approximately 45 degrees to prevent the metal tab from contacting the solder side of the control board - you may have to adjust the 7815 regulator sideways to avoid contact with the solder side of the control board as well. Lightly file and tin the footswitch, before attaching the green board to chassis earth wire.
BK BUTLER TUBE DRIVER POWER MOD SERIES
The 10k and 47n series connection is connected to the solder side of the tube socket board. I used 30 amp fusewire for the wires connecting the three boards - note the wire is connected to the solder side of the tube socket board and the component side of the control and driver board. The input and output sockets were purchased from Aron at DIY Stompboxes store - good value for money
The long pin wire on the led connects to the vacant pad that connects to the 7815 regulator IC, the other lead connects to the pad which is connected to the 1k5 resistor. The status led is inserted in the top of the case and attached by flying leads through the hole on the circuit main board.
BK BUTLER TUBE DRIVER POWER MOD FULL
I will be posting full details in the next few days - stay tuned The only other piece of equipment you will need is a suitable 16vAC power supply - there are many 16vAC 1.5A types available as burglar alarm supplies - just buy one of these and solder a 2.1mm dc socket on the wires - because it is an AC supply it does not matter which way you connect the wires I may be able to supply board kits on request, but have not worked out prices as yet, because this is a very new project. However, you can build your own if you would like to, because I shall be placing the complete design layout, PCB, chassis, and artwork details exclusively for all registered members of the freestompboxes forum.
BK BUTLER TUBE DRIVER POWER MOD PLUS
I will be building these on a one by one basis as time permits, and the price will be US$330.00 plus postage etc. Very low noise and hum levels, due to the fully regulated bipolar power supply I gave my finished prototype a run, last night at practice, and was complimented on my great guitar sound (not playing ability mind you ). There is only one wire to connect the board to the chassis earth. The three boards are solder pinned togaether and form a very strong structure to hold the tube and controls etc. There are three circuit boards - a mother board that holds the footswitch, input, output and AC power supply sockets a small board to hold the 12AX7 tube and it's passive components, and a board to accomodate the driver dual op amp and three control knobs. Inspired by Dirk Hendrik's Real Tube Screamer pedal project elsewhere in this section, and after reverse engineering the B K Butler Tube Driver, and noting some similarities, i have designed a brand new design for a REAL tube drive pedal, housed in a Hammond (or equivalent NSC) 1590BB case.
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