Attention to Form II

AC/DC

Exceptional concert....amazing performance by Angus ...thank you WBCN for the great tickets for $10.41! More photos found by clicking title of this post; password is ACDC.

Brown Stag Beetle

A visitor to our back deck last night...I'm staying inside until January....This photo made a big splash in the papers-click on the title....

D3 Smokes the Fleet!

Halifax Race

A class start of the '09 Halifax race. The light gray yacht behind the black boat flying the blue spinnaker is 143 feet long. The maxi-racers followed this start. Additional pictures can be seen by clicking on the title of this post; the password is "halifax".

Substantial Clipping

Output of fuzz circuit in purple showing harsh clipping of input signal.

Guitar Fuzz Circuit

A great sounding ToneBender MKII fuzz pedal circuit constructed with vintage Sanyo germanium transistors D3 harvested from a old reel-to-reel tape recorder circa 1960s. Planning to build this into a portable box with pots for adjusting gain and effect. A link to the source for this circuit can be found by clicking on the title of this post.

Dead in the Water

Our engine failed this afternoon coming out of Manchester harbor; good practice anchoring in a hurry. After some diagnostic work we discovered these parts inside the fuel bladder had popped out of place and blocked the gas flow.

Signal Generator Circuit with Volume Control

This is the prototype circuit using the XR-2206 signal generation IC. D3 extracted a Toshiba TC9235P volume control IC out of a small Cambridge SoundWorks desktop radio found at a yard sale; the up/down control (silver knob) is out of a CD player. The XR-2206 has a pin dedicated as an amplitude modulation input and early testing shows it works very well. For use testing our amplifiers, filters and enclosure designs, we plan to build this into a portable instrument box.

Mayapple Flower in our Shade Garden

A photo of a Mayapple flower growing in our shade garden. These plants were transplanted from my grandfather's house; this was the topic of his last research project. The article published in the American Journal of Botany can be found by clicking on the title of this post.