Patent ID: 11942951
Assignee: DWELLWELL ANALYTICS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An apparatus comprising:
a buffer amplifier having an output node;
a first switchable unidirectional current path between the output node and a capacitor, the first unidirectional current path including a diode oriented with a cathode thereof toward the output node;
a second switchable unidirectional current path between the output node and the capacitor, the second unidirectional current path including a diode oriented with a cathode thereof toward the capacitor; and
comparator circuitry operative, in response to a voltage on the capacitor being above an upper threshold, to open the first switchable unidirectional current path, the comparator circuitry further being operative, in response to the voltage on the capacitor being below a lower threshold, to open the second switchable unidirectional current path.