Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1991-12-18
1993-07-27
Strecker, Gerard R.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324663, 324690, 73 6143, 307351, G01R 2726, G01N 2722
Patent
active
052313581
ABSTRACT:
A fuel composition sensor provides to a voltage divider comprising sensor and reference capacitors a voltage which oscillates between two voltages at a comparatively low frequency, such as 6 KHz, for lower power dissipation, but which switches fast to produce periodic fast voltage changes across the voltage divider to produce voltage spikes at the junction of the capacitors indicative of the capacitance ratio and thus of fuel composition.
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Cheah Chun F.
Johnson Nick M.
Kapsokavathis Nick S.
Sanders Stephen P.
Wright Carl D.
Do Diep
General Motors Corp.
National Semiconductor Corp.
Sigler Robert M.
Strecker Gerard R.
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