Resources Contact Us Home
A/D converters

Image Number 3 for United States Patent #4940983.

A successive approximation analog to digital converter including at least one superconducting loop (FIG. 3-30; FIG. 8-68). Superconducting loops (61-64) may be used to store flux quanta used as reference levels in a digital to analog converter of the analog to digital converter. Alternatively, non-superconducting reference inductors (FIG. 3-38) can provide flux quanta reference levels. Switchable screens (34; 66) are interposed between the flux quanta stores and lobes (31; 74) in an addition/subtraction superconducting loop (30; 68). An analog signal is sampled and the corresponding magnetic flux coupled to a sensing lobe (32; 71) and concentrated at a flux concentrating lobe (33; 72). The reference fluxes are selectively coupled into the addition/substraction superconducting loop until a magnetometer (40;73) indicates zero net flux through the concentrating lobe, this corresponding to completion of the conversion.

  Recently Added Patents
Lead with lead stiffener for implantable electrical stimulation systems and methods of making and using
Method and system for reciprocal mixing cancellation of wideband modulated blockers
Optical navigation device with image sensor and inner housing
Denial of service (DoS) attack prevention through random access channel resource reallocation
Method and CTDevice for computer tomographic spiral scanning of a patient
Pickup device and method for manufacturing the same
Method and structure for adding mass with stress isolation to MEMS structures
  Randomly Featured Patents
Controlling use of a network resource
Workpiece transfer mechanism
Conductive laminated body and method for preparing the same
Method for particulate coating
DC/AC power inverter control unit of a resonant power converter circuit, in particular a DC/DC converter for use in a high-voltage generator circuitry of a modern computed tomography device or
Short range booster with multiple antennas
Ethylene propylene rubber blend and hose formulated from the same
RF tag and method of producing RF tag
Beverage maker