Holt Model 84506
...for use with precision AC shunts
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To obtain the highest accuracy in Alternating Current Measurements the effect of stray capacitive currents shunting the thermo-element must be taken into account. Although these effects are small, if accuracies approaching the uncertainties now available from NIST are to be obtained, errors of 10 to 20 parts in 106 at 50 Hz to 100KHz must be considered.
To achieve these accuracies, an AC Shunt resistor should be tested and used with its own dedicated thermo-element. Since 1965, Holt has supplied the 84506 thermal voltage converter specifically for this purpose.
With its very low DC reversal error, highoutput voltage, and the stable input impedance provided by its coaxial input connector, these premium-quality TVCs are the best companion to your Holt HCS-1 Primary AC Shunt Set.
See below for the technical specifications of the 84506.
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MODEL 84506 Thermal Voltage Converter
TECHNICAL SPECIFICATIONS |
| INPUT VOLTAGE RANGE: | 0.5 to 1.1 volt |
| FREQUENCY RANGE: | DCand5Hzto50kHz |
| AC-DO DIFFERENCE: | 20 ppm maximum to 10 kHz.; 40 ppm maximum to 50 kHz.; 60 ppm maximum to 100 kHz |
| DC REVERSAL ERROR: | Less than 0.005% |
| OUTPUT VOLTAGE: | 12 millivolts minimum DC, open circuit, at nominal input of I volt |
| INPUT RESISTANCE: | 140 ohms _t 10 ohms |
 | Click icon on left to see a block diagram illustrating the use of the 84506 one volt thermal voltage converter with the Holt Model HCS-1 AC shunts in calibrating an AC Transconductance amplifier as a standard alternating current source. |
OPERATIONAL ENVIRONMENT:
Above specifications will be met after thermally stabilizing under the following conditions:
+ 4 to +400.
Zero to 90% relative humidity.
0 to 10,000 ft. above sea level altitude
MECHANICAL:
Enclosure size:4" Diameter x 3.375 " Long
Terminals:
OUTPUT, 2 Pin MS3102A-10SL-4P
INPUT, Coaxial Type UHF Female
Specifications subject to change without notice.
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