.. face a serious problem in using a slow ADC with a fast peak detector. The circuit in Figure 1 allows a slow ADC to measure a fast, sampled signal peak. The 100-MHz peak ...
.. of excessive power consumption, uncertain switching, and LED aging. The circuit’s main components comprise amplitude detector D 1 , capacitor C 1 , and Schmitt trigger Q 1 /Q 2 to control a current through the optocoupler’s ...
.. voltage ramp generator (G3) whose slope depends on the value of the test capacitor C X , a single-gate voltage level detector (G4), and two buffers (G5, G6) which drive the meter through the calibrating resistor R CAL . The reading ...
.. An LED’s resistance changes with ambient light, which changes a voltage that drives a logic gate. This type of light detector is highly power-efficient and is ideal for battery applications. You can use the NAND gate’s logic ...
.. 1 then supplies firing pulses to the gate of triac Q 1 during the northbound half-cycle, and the load proceeds toward that detector. Figure 1. The optocouplers provide both position-control logic and triac gate drive to the motor. ...
.. The circuit has two independent sensors that generate a trigger signal when the optical path between their IR emitter and detector is interrupted. The first trigger signal will open the water line for five seconds, enough for the user ...
.. ZCD. To compensate for the base-emitter gap, Q 2 acts as a diode to block the ac-positive cycle. For efficiency, the detector must sense the ac-mains cycles at as high a voltage as possible. This requirement drives the choice of ...
.. a cold-junction compensation circuit, an analog-to-digital converter (ADC) with internal reference, an open-thermocouple detector and alarm indicator, and a digital-output interface. All of these functions are now integrated in small ...