Title :
Precise Voltage to Frequency Converter for Telemetry Applications of Strain Gage Pressure Transducers
Author :
Grover, Thomas P.
Author_Institution :
Utah Biomedical Test Laboratory, University of Utah Research Institute, Salt Lake City, Utah 84108.
Abstract :
A voltage to frequency converter suitable for telemetric applications of strain gage pressure transducers is described and analyzed. The circuit uses a voltage reference IC and a temperature dependent op amp bias current to achieve zero pressure offsets less than 3 torr over a 25°C temperature range and a 1 volt supply voltage range.
Keywords :
Bridge circuits; Capacitive sensors; Frequency conversion; Operational amplifiers; Pulse circuits; Pulse modulation; Switches; Telemetry; Transducers; Voltage; Electricity; Pressure; Telemetry; Temperature; Transducers;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.1975.324521
