Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1992-08-04
1993-11-30
Voeltz, Emanuel T.
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
363 59, 361 18, 250374, G01J 144
Patent
active
052668835
ABSTRACT:
An ionization detector dynamic calibration monitor that regulates the high voltage power supply to the detector. In a preferred embodiment, a voltage boost current source provides an input voltage for a power out voltage regulator and for a +14.75 volt board regulator. The board regulator provides a voltage reference for various circuitry, and provides a voltage reference for coarse calibration and display calibration adjustment circuitry. The power voltage regulator provides the high voltage power supply drive signal. An error amplifier drives an integrator, which, in turn, drives a bargraph display. An optically-isolated output circuit drives an external alarm or relay. In an alternative embodiment, the pulse width of a detected circuit is linearized and converted to an analog control signal. The analog control signal drives conventional power supply control circuitry.
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Philip Morris Incorporated
Smith Alan D.
Voeltz Emanuel T.
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