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Birthplace of “Silicon Valley”
"This garage is the birthplace of the world’s first high-technology region, “Silicon Valley.” The idea for such a region originated with Dr. Frederick Terman, a Stanford university professor who encouraged his students to start up their own electronics companies in the area instead of joining established firms in the East. The first two students to follow his advice were William R. Hewlett and David Packard, who in 1938 began developing their first product, an audio oscillator, in this garage."
California State Department of Parks & Recreation and Hewlett Packard Company. May 19, 1989
In 2007 the property was listed on the National Register of Historic Places.
367 Addison Avenue in Palo Alto, CA 94301 - Google Map
This is the output of the time code generator. I am guessing it's a form of IRIG, but the frequency appears to be wrong. It could be that I tuned the oscillator incorrectly. It keeps very bad time right now.
Shielding is required to prevent the power transformer radiation ruining the picture. It can be used without, but some hum and defocusing is evident. Aluminium box contains EHT circuit. 5V4 rectifier is in front. Along the top from front to back are the 12AU7 line oscillator and output valves, with the 5V4 rectifier next to the EHT box. Adjacent to the EHT box near the CRT mount is the 12AT7 sync separator. Along the bottom from front to back are 12AU7 frame output, 6BX6 frame oscillator, 6AC7 1st video, and 6V6 video output. Close observation shows the 5BP1 number on the CRT neck. This tube was from a batch made in 1943. 5BP1's came onto the disposals market cheaply after the war. In 1984 I bought the entire Deitch Bros. stock of 5BP1's for $2.00 each.
Another of my friends. We have been in contact ever since those days, and meet up regularly (last May 2014). And we have another trip planned (June 2015) - back to Luneburg - our 60th anniversary of first meeting up!
Inspired by Look Mum No Computer's Super Simple Oscillator.
See this in action here:
A jam youtu.be/aHC_sp03o0Y
A drive in the car youtu.be/QOtJ3Jyn6qU
330-PSA-286-60 (USN 710826): Heart of a Satellite. This small vacuum-protected heart of the Transit 3-A navigational satellite is an ultrastable crystal oscillator which pulses at a rate of several million beats a second. It’s being held here by J. Barry Oakes, the physicist of the Applied Physics Laboratory of the John Hopkins University, who developed it. The crystal’s sure, unchanging oscillations provide the signals on which Doppler measurements are made to enable Navy scientists to determine with precision the position of the satellite. Here, the oscillator or crystal is encased in a special three-cylinder high-vacuum flask. The flask bars nearly all temperature influence on the oscillator thus insuring a stable signal – vital if the Transit system is to operate. Photograph released November 11, 1960. (9/15/15).
@ "Feira da Vandoma" - Porto, Portugal
Co-founder of the great experimental duo of crazy musicians/performers "Calhau!"
About the project "Calhau!":
"Under the name of Calhau! and other capricious derivations, the Porto-based couple, Marta Ângela and João Alves, have produced a remarkable body of cross-disciplinary work since 2006 in visual arts, film and music -- silkscreens, musical instruments, texts, wardrobes and characterisation, public presentation of films, concerts, performances and lectures -- highlighting a fascination for the "sometimes esoteric elitism of certain manifestations of (rural) popular culture". Accepted as seductively bizarre in the world of independent music and considered as ethically compromised with humor and 'craft experts in contingency' in the field of visual arts, their work is always bold and pertinent." (from culturgest.pt description)
A Film (Excerpt) by Calhau!:
www.youtube.com/watch?v=KakatyigLDQ
Interview with "Calhau!":
www.youtube.com/watch?v=kzQQCFFqDXw&feature=youtu.be
Homepages:
chaos in the double well resonator circuit, showing the displacement
trace with intermittent hopping between wells
A short montage from the opening of an Apple Store at Square One Shopping Center in Mississauga, Ontario, Canada
Audio credit goes to Stereo Lab for Lo Boob Oscillator
‘NODE15 – Forum for Digital Arts’ is gathering designers, creative coders and digital artists for creative explorations of technologies. With the Leitmotif ‘Wrapped in Code – the Future of the Informed Body’, NODE15 is devoted to the negotiation of the body and its fusion with technology. It’s a week long rush with hands-on vvvv workshops, exhibition, symposium, performances and artist talks.
Photo: Nemanja Knežević
"Station 9DCP, owned and operated by H.M. Degolier, London, Wis. The aerial, a four wire inverted L with caged lead-in, is supported by a 100 foot steel tower at one end. The counterpoise 14 wires in fan shape, is 20 feet above ground. The C.W. transmitter employs two 50-watters in the 1DH circuit, using rectified A.C. on the plates. The phone set employs a 500-watt oscillator, 50 watt modulator and a 5-watt special amplifier. The receiver is a Kennedy set."
-- Radio News, Nov. 1924
Entry in category 2. Women and men of science; Copyright CC-BY-NC-ND: Guillaume de Guyon
Toxic academic pressure floods the hallway as the foolish attempt to graduate and climb the academic ranks. Members of the scientific community unplagued by such burdens read carelessly, supervised by deer, ducks, and house plants. Despite an apparent disorder, everything has been gradually set to satisfy the scientist. The ducks are leaning on the string at a very specific distance to create harmonic oscillators with opposite phases. The islands on the door provide some escape, the dartboard diverts the scientist and fulfills his need of statistical studies.
This was a local Bierhaus about a mile from the camp. I think it, too, would have been demolished to make room for the industrial estate.
Datum TymServe 2100 GPS Network Time Server with optional rubidium oscillator, locked to GPS. A Stratum 1 network time source.
Paid almost nothing for this mint condition rubidium time server on eBay, because seller thought it had a defective display... listing said it was "burned out". He was selling it for parts, claiming: "untested... powers up, display needs replacement". Cost $102.00.
When it arrived, display was set to minimum. Display contrast is easily adjusted by buttons 4 and 9 (lighter to darker). A few pushes and the display was back to normal. It is fortunate that no one reads manuals. Sold it on eBay for $695.00.
If you're buying one, avoid the Rb oscillator... for 99% of applications it is a waste of money. Datum TymServe 2100 network time server is obsolete, but if you can buy one in guaranteed working condition very inexpensively, it does the job.
A favourite walk of ours . . . I was always on the lookout for wood ants' nests. We don't have anything like that in Scotland . . . at least, I've never seen any.
‘NODE15 – Forum for Digital Arts’ is gathering designers, creative coders and digital artists for creative explorations of technologies. With the Leitmotif ‘Wrapped in Code – the Future of the Informed Body’, NODE15 is devoted to the negotiation of the body and its fusion with technology. It’s a week long rush with hands-on vvvv workshops, exhibition, symposium, performances and artist talks.
Photo: Nemanja Knežević
The photographs should be shared only with permission, and in the form they have been uploaded here, with no cropping or further editing, and the watermark must remain in place. Copyright on all these images remains with the photographer, Neil Fellowes
The main PCB which mounts on the bottom of the chassis. The bias/erase oscillator transformer (centre) and relay bracket (bottom left) are unscrewed so I can investigate the wiring.
On the right are the D-series plugs to connect to the main chassis.
The transistor numbers on the PCB have been assigned to help the repairer (!) :
TR1-3 : Announcement Playback Amplifier
TR2x : Message Recording Amplifier
TR5x : Bias/Erase Oscillator
TR6x : Ring Detector
TR8x : Announcement Start
TR10x : End of Announcement
TR12x : End of Message
TR14x : Message Playback Amplifier
‘NODE15 – Forum for Digital Arts’ is gathering designers, creative coders and digital artists for creative explorations of technologies. With the Leitmotif ‘Wrapped in Code – the Future of the Informed Body’, NODE15 is devoted to the negotiation of the body and its fusion with technology. It’s a week long rush with hands-on vvvv workshops, exhibition, symposium, performances and artist talks.
Photo: Nemanja Knežević
We’ve upgraded the Nebulophone!
Whats new:
- Improved sound generation.
- Five new waveforms including two with dual, detuned oscillators.
- Programmable sequencer to easily make your own arpeggios right on the Nebulophone.
- Perfect tuning across six octaves.
- Improved white noise mode.
- Adjustable temperment and key.
- HYPERNOISE 30XX mode.
More info and sounds at bleeplabs.com
General Radio 1603-A Z-Y Bridge:
A lab-grade Z [Impedance] - Y [Admittance] instrument from 1959 to 1961. It listed for $695. That was a ton of money. It still needed the optional 20Hz to 20KHz oscillator and a narrow, low noise detector. I actually downloaded the manual for it a few days ago. I bought it for $50 about 10 years ago. Unfortunately very few of todays hams know or would even bother to learn how to use it. It has been collecting dust. I will try to hook it all up and se if it "jives" with component values and reading from a more modern LCR bridge. [If you call 1975 modern] With a 20hz input it can read well into the Henry range of inductance! I know, I know Zzzzzzzz.
However as art:
Well the dials look like something out of the movie Brazil, so I tried to capture the macabre array of dials close-up. Speaker below goes with my National 240-D RX - a real boatanchor!
Minolta Konica D500 mixed flash/natural light.
Depth Charge consists of 9 attenuators packed into a very small area. All attenuators are compatible with both CV and audio rate signals. The module also contains a simple cross system interface.
For the latest info on Minimal System Instruments Eurorack Modular Synth Modules please visit our Facebook page and hit the 'Like' button.
This is a direct digital synthesis (DDS) radiofrequency signal generator built around an Analog Devices AD5932, and controlled by an Atmel ATMEGA168.
It's a kit, available from Doug Pongrance, N3ZI, www.pongrance.com.
It's intended as a flexible local oscillator for home-brew ham radio receivers, but works just fine as just a general-purpose high frequency signal generator.
Missing just a couple of configuration jumpers here, it's almost ready for the smoke test.
Large pores (green) are softer than peptidoglyan (pink). Change of texture is due to blunting of the tip.
One of the lads I used to pal around with - enjoying a coke at Jungfernstieg?. He had a wonderful plummy English accent. I used to tell him he should be on the radio . . .so he applied to the British Forces Network and hey-ho spent the rest of his National Service days in Berlin (or was it Cologne)!! I believe he eventually got a job at the BBC. Somebody told me recently that he had died. I hope not. He was a real nice guy. So If you're still out there, John, give me a shout.
The thing that united scientists with rock n roll.
Designed by Robert Moog in 1970, the Minimoog Model D synthesizer is still regarded as the Rolls Royce equivalent for analog keyboard-based synthesizers. Specifically designed for touring musicians, the minimoog exported electronic music experiments from university labs out to the masses - and her deep farting bass-sounds (think of Kraftwerk's Autobahn), lead and space bleeps and sweeps have become HUGELY popular over the last 38 years.
There were originally 13,000 minimoogs produced between 1970 and 1981. After a brief hiatus during the digital-synth craze in the 1980s, the minimoog enjoyed a resurgence of interest among musicians since the 1990s...and yes, it's becoming harder to get a hold on one.
I obtained this Mini from a studio garage sale back in 1989 for US$ 150 (in prime condition - save the crackling external input knob). After lying dormant for 7 years now, it's time to bring life back into this 1973 model D mini. Tropical humidity heavily damaged the furnishing. It needs re-tuning of the oscillators, cleaning of the electronic board, new switches for filter modulation, and thinking about a new base panel.
Drone Ranger : 4 Oscillators, 2 white noise sources, 2 ring mod, 2 Fuzz, 2 resonant low pass filters with LFO modulation.
‘NODE15 – Forum for Digital Arts’ is gathering designers, creative coders and digital artists for creative explorations of technologies. With the Leitmotif ‘Wrapped in Code – the Future of the Informed Body’, NODE15 is devoted to the negotiation of the body and its fusion with technology. It’s a week long rush with hands-on vvvv workshops, exhibition, symposium, performances and artist talks.
Photo: Nemanja Knežević
Nel cerchio imperfetto del suo universo ottico la perfezione di quel moto oscillatorio formulava promesse che l’irripetibile unicità di ogni singola onda condannava a non essere mantenute. Non c’era verso di fermare quel continuo avvicendarsi di creazione e distruzione. I suoi occhi cercavano la verità descrivibile e regolamentata di un’immagine certa e completa: e finivano, invece, per correre dietro alla mobile indeterminazione di quell’andirivieni che qualsiasi sguardo scientifico cullava e derideva.
A.B.
Q: What is a theremin?
The theremin is an electronic musical instrument that is played without being touched. It most often takes the form of a box (wooden is most common) with 1 or 2 metal antennas protruding from it. By waving your hands near the antennas, you can control pitch and volume.
Q: How does a theremin work?
The theremin works on the principles of heterodyning and capacitance. When you wave your hands near the antenna, you form a capacitor between your hand and the antenna. A capacitor's properties vary by distance between its two "plates" and by the material between them (in this case, air). The hand/antenna capacitor is part of a circuit known as an oscillator. The output from this oscillator is mixed with the output from a fixed oscillator (one that does not vary), and the difference between the two is extracted. For the volume circuit, this signal is converted to control the loudness of the instrument, and for the pitch circuit, the signal is amplified into the tone you hear.
Q: When was the theremin invented?
The theremin was invented around 1919 by Professor Lev Sergeyvich Termen (whose name was later anglicized to Leon Theremin). It is believed to be one of the very first electronic musical instruments.