Agilent 1960-10 free download

File name 1960-10.pdf

HEWLETT-PACKARD JOURNAL T E C H N I C A L I N F O R M A T I O N F R O M T H E - h p - L A B O R A T O R I E S Vol. 12, No. 2 JBLISHED BY THE HEWLETT-PACKARD COMPANY, 1501 PAGE MILL ROAD, PALO ALTO, CALIFORNIA OCTOBER, 1960 A Voltage -to -Frequency Converter for Greater Flexibility in Data Handling of the most flexible instruments pres- The electronic counter can now be used to ently available to the engineer is the elec sample, measure, and handle data with con tronic counter. Not only does the counter have siderably more flexibility than previously by an accuracy and a resolution that are matched the voltage-to-frequency converter shown in SEE AtSO: by few instruments or tech Fig. 1. This instrument converts dc or varying -hp-'s division for special instrumentation, page 3 niques, but its speed of dc voltages to a proportional frequency which measurement, too, is relatively high, several can then be measured by a counter to yield a measurements a second often being possible. direct indication of voltage. In other words, For data-handling applications these qualities the converter-counter combination forms a fast are attractive and are made even more attrac and accurate digital voltmeter. Besides the fact tive by the fact that many output coupling that it operates with a general-purpose meas devices are currently available to enable the uring instrument (i.e., a frequency counter), counter to transfer its data to such devices as the converter has the advantage that it has low electric typewriters, tape perforators, card susceptibility to error from noise in the signal. punch machines, printers, and electronic com Probably of even more importance, the con puters.