Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Electromagnetic shield for a passive electronic component in an active medical device implantable lead
Bus controller for handling split transactions
Client-managed group communication sessions within a wireless communications system
Stabilization of dicarbonate diesters with protonic acids
Bi-directional switch using series connected N-type MOS devices in parallel with series connected P-type MOS devices
Variety corn line LIC7382
Additives for oil recovery from reservoirs
  Randomly Featured Patents
Polymeric charge transport compositions and electronic devices made with such compositions
Neuronal measurement tool
Field device incorporating circuit card assembly as environmental and EMI/RFI shield
Carboxylate and heat-sensitive recording material using same
Vector normalizing apparatus
Apparatus for measuring the transmission rate of volatile organic chemicals through a barrier material
Game board
Handheld display device for playing and controlling video associated with printed substrate
Adjustable stock guide
Method for the monitoring of sleep using an electronic device