Bipolar signal amplification or generation

Details Bipolar signal amplification or generation Bipolar signal amplification or generation

1990-08-31

1993-02-16

Steinberger, Brian S.

Communications: electrical

Wellbore telemetering or control

Using a specific transmission medium

3408558, 375 17, 307127, G01V 100

Patent

active

051874733

ABSTRACT:
Amplification or generation of very low (and variable) frequency, low voltage, high current bipolar signals useful in electrical borehole telemetry systems is achieved using a duty cycle control device for causing the alternate direct application of a positive voltage and a negative voltage to an integrator. A commutated clamp is connected to the input of the integrator for switchably connecting the integrator directly into a current loop with the load, connected to the output of the integrator, when neither voltage is being applied to the input of the integrator.

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