#### Filter Results:

- Full text PDF available (2)

#### Publication Year

1977

2000

- This year (0)
- Last 5 years (0)
- Last 10 years (0)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Method

Learn More

- Saeed Aghtar, James W. Haslett, Fred N. Trofimenkoff
- 1997

Charge injection error in the presence of subthreshold effects has been analyzed. It is confirmed that the subthreshold effect is significant at low voltage falling rates. A simplified model isâ€¦ (More)

- J. Bhagwan, Fred N. Trofimenkoff
- IEEE Transactions on Geoscience and Remoteâ€¦
- 1983

An electric drill stem telemetry link with nonzero resistance is analyzed using a transmission line model. Attenuation and bandwidth are found to differ significantly from these corresponding to aâ€¦ (More)

- Fred N. Trofimenkoff, Michael Segal, Allan Klassen, James W. Haslett
- IEEE Trans. Geoscience and Remote Sensing
- 2000

A downhole-to-surface communication channel consisting of a long vertical cylinder (the stem) and an isolated downhole in-line cylinder (the electrode) embedded in a homogeneous earth is consideredâ€¦ (More)

- P. N. Mahana, Fred N. Trofimenkoff
- IEEE Transactions on Instrumentation andâ€¦
- 1986

Procedures for dealing with calibration data involving a disturbing variable using an 8-bit microcomputer are described. An interpolation polynomial with coefficients that are themselves polynomialsâ€¦ (More)

- Fred N. Trofimenkoff, James W. Haslett, R. H. Johnston
- Canadian Journal of Electrical and Computerâ€¦
- 1993

A technique for accurately determining the resistivity and relative permeability of tubular stock is presented. The technique is based on measurements of the inductance of a coil wound on a toroidalâ€¦ (More)

- Fred N. Trofimenkoff, Ivars G. Finvers, R. H. Smallwood
- 1996 IEEE International Solid-State Circuitsâ€¦
- 1996

In this paper, techniques used to realize precision CMOS circuits for use in down-hole oil and gas field applications are described. The focus is on bulk CMOS circuits so that complete mixedâ€¦ (More)

- Fred N. Trofimenkoff, James W. Haslett, A. E. Nordquist
- IEEE Transactions on Instrumentation andâ€¦
- 1986

A voltage-to-frequency conversion circuit with a pulse-width-to-period ratio proportional to an input voltage and to first order independent of circuit component values is described. The circuit canâ€¦ (More)

- Ronald H. Johnston, Fred N. Trofimenkoff, James W. Haslett
- IEEE Transactions on Geoscience and Remoteâ€¦
- 1987

The effect of embedded conductors such as well casings on apparent resistivity measurements on the earth's surface is of interest in geophysical exploration. A relatively simple and computationallyâ€¦ (More)

- Fred N. Trofimenkoff, R. H. Johnston, James W. Haslett, B. Hriskevich
- Canadian Journal of Electrical and Computerâ€¦
- 1989

The well-known equations for the axial internal impedance of tubular stock at high frequencies are examined and approximate solutions valid for all frequencies, diameters and wall thicknesses areâ€¦ (More)

- Fred N. Trofimenkoff, A. E. Nordquist
- IEEE Transactions on Instrumentation andâ€¦
- 1984

A single amplifier resistance bridge with a provision for feedback linearization for both positive and negative resistance element curvatures is described in this work. A platinum resistanceâ€¦ (More)