Skip to main content

Home/ Sensorica Knowledge/ Group items tagged amplifier

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
Tiberius Brastaviceanu

AD524 Precision Instrumentation Amplifier Data Sheet (Rev. F) - 4 views

docs.google.com/viewer

precision amplifier data sheet mosquito_phil_project mosquito_project doc

shared by Tiberius Brastaviceanu on 15 Dec 11 - No Cached
  • Tiberius Brastaviceanu on 31 May 12
     
    used to build the XY piezo controller.
Tiberius Brastaviceanu

g.Sensors - measure physiological and physical signals, connect directly to the amplifi... - 0 views

www.gtec.at/...g.Sensors-Specs-Features

motion medical sensing competition

shared by Tiberius Brastaviceanu on 09 Jun 13 - No Cached
  • Tiberius Brastaviceanu on 09 Jun 13
     
    "Limb Movements This piezo-electric sensor is placed on the ankle to detect movements of the feet during sleep. For investigation of restless leg syndrome (RLS) and periodic limb movements (PLM)."
Tiberius Brastaviceanu

Avtech Electrosystems - Nanosecond Waveform Generators - 2 views

www.avtechpulse.com

generator amplifier store supplier electronics material Tibi

shared by Tiberius Brastaviceanu on 23 Dec 11 - Cached
  • Tiberius Brastaviceanu on 21 Aug 12
     
    never ordered from them
Francois Bergeron

Refined Myograph Systems for Mice and Rats, Lab Refined Myograph Systems - 0 views

www.kentscientific.com/...productView.asp

shared by Francois Bergeron on 05 Dec 12 - No Cached
Luciano Silva liked it
  • The  pre-calibrated amplifier eliminates the need to calibrate with weights.
  • The system includes base, vertical support, bath support, micromanipulator block, micro- manipulator handle, muscle  supports rods, 1 pr/feet for rings, 25 μm and 100 μm Stainless Steel (3 m), 1 pr/hooks, 20 clips for strips, single myograph  bath and the TRN001 transducer.
  • Applications:• Pharmacological Effects• Receptors• Vaso-Mechanics• Pathology• Tissue Biopsies• GI Motility• Respiratory Airway Mechanics• Reproductive Physiology• Intracellular Ions with Fluorescence• Electrophysiological Measurements
  • ...1 more annotation...
  • Basic Myograph for rings and strips 1 $7,385
Tiberius Brastaviceanu

Smart key - Wikipedia - 0 views

en.wikipedia.org/Smart_key

blockchainaccess_project paper access

shared by Tiberius Brastaviceanu on 09 Jun 16 - No Cached
  • Keyless Go
  • The system works by having a series of LF (low frequency 125 kHz) transmitting antennas both inside and outside the vehicle. The external antennas are located in the door handles. When the vehicle is triggered, either by pulling the handle or touching the handle, an LF signal is transmitted from the antennas to the key. The key becomes activated if it is sufficiently close and it transmits its ID back to the vehicle via RF (Radio frequency >300 MHz) to a receiver located in the vehicle. If the key has the correct ID, the PASE module unlocks the vehicle.
  • transmitting low frequency LF signals via the 125 kHz power amplifier block receiving radio frequency RF signals (> 300 MHz) from the built-in ISM receiver block encrypting and decrypting all relevant data signals (security) communicating relevant interface signals with other electronic control units microcontroller
Francois Bergeron

iWorx :: Organ/Tissue Bath Systems - 0 views

www.iworx.com/content

hardware medical instrument company

shared by Francois Bergeron on 14 Jun 11 - No Cached
  • iWorx offers 4-channel (M4) or single-channel (M1) Myograph systems from Radnoti Glass Technology. These systems are designed for researchers performing contractile force studies on small ring samples with sizes ranging from 60 mm to over 1 mm in diameter. Examples include mouse aortic rings and small intestinal ring samples as well as micro-vessel preparations like mesenteric arteries.The Myograph systems include myograph chambers with transducers and amplifiers, a base with sliding wrist rest, temperature controllers, stands, tubing kits and all other essential items to conduct an experiment.iWorx offers a myograph normalization module (LS-20NM) which calculates the optimal pretension settings for each sample prior to conducting an experiment.
Tiberius Brastaviceanu

Places to Intervene in a System by Donella H. Meadows - developer.*, Developer Dot Star - 0 views

www.developerdotstar.com/...places_intervene_system.html

systems complexity management paper

shared by Tiberius Brastaviceanu on 20 Sep 11 - Cached
  • Folks who do systems analysis have a great belief in "leverage points."
  • where a small shift in one thing can produce big changes in everything.
  • backward intuition
  • ...15 more annotations...
  • "Places to Intervene in a System," followed by nine items: 9.  Numbers (subsidies, taxes, standards). 8.  Material stocks and flows. 7.  Regulating negative feedback loops. 6.  Driving positive feedback loops. 5.  Information flows. 4.  The rules of the system (incentives, punishment, constraints). 3.  The power of self-organization. 2.  The goals of the system. 1.  The mindset or paradigm out of which the goals, rules, feedback structure arise.
  • an invitation to think more broadly about system change.
  • Numbers ("parameters" in systems jargon) determine how much of a discrepancy turns which faucet how fast.
  • some of which are physically locked in, but most of which are popular intervention points.
  • Probably ninety-five percent of our attention goes to numbers, but there's not a lot of power in them.
  • Not that parameters aren't important—they can be, especially in the short term and to the individual who's standing directly in the flow. But they rarely change behavior. If the system is chronically stagnant, parameter changes rarely kick-start it. If it's wildly variable, they don't usually stabilize it. If it's growing out of control, they don't brake it.
  • Spending more on police doesn't make crime go away.
  • Numbers become leverage points when they go into ranges that kick off one of the items higher on this list.
  • Probably the most common kind of critical number is the length of delay in a feedback loop.
  • A delay in a feedback process is critical relative to rates of change (growth, fluctuation, decay) in the system state that the feedback loop is trying to control.
  • Delays that are too short cause overreaction, oscillations amplified by the jumpiness of the response. Delays that are too long cause damped, sustained, or exploding oscillations, depending on how much too long. At the extreme they cause chaos. Delays in a system with a threshold, a danger point, a range past which irreversible damage can occur, cause overshoot and collapse.
  • delays are not often easily changeable
  • It's usually easier to slow down the change rate (positive feedback loops, higher on this list), so feedback delays won't cause so much trouble
  • Most systems have evolved or are designed to stay out of sensitive parameter ranges. Mostly, the numbers are not worth the sweat put into them.
  • The plumbing structure, the stocks and flows and their physical arrangement, can have an enormous effect on how a system operates.
1 - 13 of 13
Showing 20▼ items per page