Patent ID: 11921527
Assignee: COPELAND LP
Field: Control (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. An optocoupler circuit comprising:
a first resistor;
a second resistor
an optocoupler comprising a light source and a phototransistor, wherein the light source is connected to form a first voltage divider with the first resistor, wherein the phototransistor is connected to form a second voltage divider with the second resistor, wherein the optocoupler transitions an output of the second voltage divider between a first level and a second level, and wherein magnitudes of the first level and the second level are greater than zero;
a reference circuit configured to output a reference voltage; and
a comparator comprising a first input and a second input, wherein the first input receives an output of the second voltage divider, wherein the second input receives the reference voltage, and wherein an output of the comparator transitions between a third level and a fourth level based on a comparison between the output of the first voltage divider and the reference voltage.