Article révisé par les pairs
| Résumé : | Since most electronic laboratories need a phasemeter only once in a while, here is a cheap alternative to buying one. All it needs is three identical C MOS 4011 integrated circuits, some discrete components, and a good voltmeter to measure the output. The phasemeter accepts both analog and digital signals as inputs. Its usable frequency range starts at less than 5 hertz and goes up to several megahertz. A second circuit, which is an edge triggered memory cell, indicates which input signal leads the other. This information is displayed by light emitting diodes. |
