my experiments with neon oscillators. In this case, I wanted
to create an 'open' system where the interaction between the
oscillating units is acoustic rather than electrical. Each oscillating
unit hangs from the ceiling, having also a speaker suspended
below. The installation consists of a number of these units places
within a space, and each is tuned to match the others' frequencies.
The sound produced by each unit fills the space and is fed back
to each oscillator through microphones. This feedback network
is sensitive to changes in the acoustic environment, and will
produce variations in activity when disturbed by movement or
The heart of each oscillating unit
is a neon discharge tube called a strobotron.
It was most often employed in strobe circuits, preceding the advent
of xenon tubes. Audio input from a microphone is amplified by a 12AX7 dual
triode and is fed to a 5963 configured
as an astable multivibrator . The incoming audio acts as a synchronizing
signal, changing both the frequency and phase of the oscillator.
The oscillator's output is then used to trigger the discharge tube
producing a flash of light and an audible pulse through the coupled
The installation currently consists
of four oscillating units. The preferred space is one that is large