Real Time Peak Detector.
DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Pagination or Media Count:
According to the patent application, the center point in time of a sine wave is determined in real time by determining the zero crossing points using a comparator and a reference source. The output pulses from the comparator start and stop a width binary counter and the count is divided by two and is connected to a down counter as a preload. Division by two is effected by offsetting positions of the binary inputs to the down counter by one binary bit in respect to the outputs of the width counter. The next pulse from the comparator starts the second counter counting down and upon reaching zero, a pulse is emitted indicating that the center of the cycle of the sine wave has been reached which is the point of maximum amplitude.
- Test Facilities, Equipment and Methods