AA cells in series to power the amp and
keeping it outboard of the guitar, but
in-line with the amp. That gives one the
option to raise the voltage to 12V if it
does not goof up the regulator supplying the filaments. I have no experience
with that particular IC. If you have any
thoughts on my comments, I would
appreciate hearing from you.
Glad the article sparked your
interest. The manufacturer recommends
(will ship you with the kit?) a piezo
pickup to place inside your guitar cavity.
I didn't have any impedance problems
using simple capacitor coupling.
Re: the plate voltage, you have it
exactly. There isn't much room to play,
but the audio changes are apparent
even with subtle changes in voltage
(depends on how clean you like your
guitar sounds). No idea on the 12V
supply. However, I found the
manufacturer to be VERY responsive to
questions. I hope this helps. I found the
amp very robust and easy to work with.
Not like the old HV amps I grew up with.
magazine I've followed his articles with
great interest. The four articles I like the
most are the Peanut Butter Jar Monster
Detector, the two on the Probotix CNC
machine, and the Das BlinkenBoard
article. I ordered a BlinkenBoard kit last
week and today it arrived, so I'll build it
as soon as I have time and follow the
updates on that. I want to thank Vern
for a continuing series of very high
quality articles. What impresses me the
most is his highly visible teamwork with
his wife and others, and his willingness
to give those people credit for their
efforts. Together, you have presented
many new ideas to readers like me.
IN THE BLINK OF ...
I read the Das BlinkenBoard article
in N&V's June ‘09 issue with much glee.
It reminds me of a time in the early
80's when I was installing mainframe
mini-computers. I installed one in a
property management company and
after it was complete, the owner/buyer
was wondering where all the blinky
lights were. He really wanted blinky
lights. He just paid 1/4 million dollars
and wanted lights! I went back to the
office and started building a dummy
panel with LEDs tied into the address
and data lines for him. (I could of
charged him hundreds of dollars).
Anyway, it brings back memories.
Thanks for the great articles.
I'm a Nuts & Volts subscriber. Ever
since Vern Graner took over the
Personal Robotics column for the
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