[Application of phase lock loop IC to the design of a heart rate display and alarm circuit].
This paper introduces a successful application of the display and alarm circuit for hear rate, based on phase lock loop (PLL)IC CD4046 in the modification of some old-type monitors.
Affiliated Hospital to the College of Chinese Medicine Shanxi Provinial.
Yi
Y
Zhao
D004560:Electricity; D004867:Equipment Design; D006339:Heart Rate; D008991:Monitoring, Physiologic / Q000295:instrumentation*