1409-G: Difference between revisions
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|class=Capacitance Standards | |class=Capacitance Standards | ||
|summary=0.002μF,0.05% Standard Capacitor | |summary=0.002μF,0.05% Standard Capacitor | ||
|image= | |image=GR 1409-G Front.jpg | ||
|caption=General Radio 1409-G Standard Capacitor | |caption=General Radio 1409-G Standard Capacitor | ||
|series=1409 | |series=1409 | ||
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The {{Title|General Radio General Radio 1409-G Standard Capacitor}} was introduced in {{Catalog O}} and remained available through {{Catalog U}}. | The {{Title|General Radio General Radio 1409-G Standard Capacitor}} was introduced in {{Catalog O}} and remained available through {{Catalog U}}. | ||
The 1409-G is a fixed mica capacitor of very high stability for use as two or three-terminal capacitance standards in the laboratory. The capacitor is installed in an aluminum case along with Silica gel desiccant then sealed with hi-temp potting wax. A well located on the right side of the case for the insertion of a dial-type thermometer. Three jack-top binding posts are provided on the top of the case and removable plugs on the bottom, for convenient parallel connection without error. Each capacitor is supplied with a certificate of calibration giving two and three terminal measured capacitance. | The 1409-G is a fixed mica capacitor of very high stability for use as two or three-terminal capacitance standards in the laboratory. The capacitor is installed in an aluminum case along with Silica gel desiccant then sealed with hi-temp potting wax. A well located on the right side of the case for the insertion of a dial-type thermometer. Three jack-top binding posts are provided on the top of the case and removable plugs on the bottom, for convenient parallel connection without error. Each capacitor is supplied with a certificate of calibration giving two and three terminal measured capacitance. The Type 1409-G capacitor is mounted in the small case. | ||
See [[1409]] to view all the capacitors in the series. | See [[1409]] to view all the capacitors in the series. | ||
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* '''Adjustment Accuracy:''' within ±0.05% | * '''Adjustment Accuracy:''' within ±0.05% | ||
* '''Stability:''' Capacitance change is less than 0.01% per year | * '''Stability:''' Capacitance change is less than 0.01% per year | ||
* '''Temperature Coefficient: capacitance; +35 ± 10 ppm per degree between 10 °C and 70 °C | * '''Temperature Coefficient:''' capacitance; +35 ± 10 ppm per degree between 10 °C and 70 °C | ||
* '''Dissipation Factor: Less than 0.0003 at 1 kHz and 23 °C (see curves). Measured dissipation factor at 1 kHz is stated in the | * '''Dissipation Factor:''' Less than 0.0003 at 1 kHz and 23 °C (see curves). Measured dissipation factor at 1 kHz is stated in the certificate to an accuracy of ±0.00005 | ||
certificate to an accuracy of ±0.00005 | * '''Leakage Resistance:''' 5000 ohm-farads or 100 GΩ, whichever is the lesser | ||
* '''Leakage Resistance:''' 5000 ohm-farads or 100 | |||
* '''Maximum Voltage:''' 500 V peak below 2.7 MHz | * '''Maximum Voltage:''' 500 V peak below 2.7 MHz | ||
==Links== | ==Links== | ||
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GR 1209 Figure 2.jpg|Dissipation factor as a function of frequency. | GR 1209 Figure 2.jpg|Dissipation factor as a function of frequency. | ||
GR 1409 Technical Drawing.jpg|Technical Drawing. | GR 1409 Technical Drawing.jpg|Technical Drawing. | ||
GR 1409-G Front.jpg | |||
GR 1409 Small Case Left.jpg| Thermometer Access | GR 1409 Small Case Left.jpg| Thermometer Access | ||
GR 1409 Small Case Right.jpg | GR 1409 Small Case Right.jpg | ||
Latest revision as of 16:46, 12 July 2024
The General Radio General Radio 1409-G Standard Capacitor was introduced in Catalog O (1956) and remained available through Catalog U (1970).
The 1409-G is a fixed mica capacitor of very high stability for use as two or three-terminal capacitance standards in the laboratory. The capacitor is installed in an aluminum case along with Silica gel desiccant then sealed with hi-temp potting wax. A well located on the right side of the case for the insertion of a dial-type thermometer. Three jack-top binding posts are provided on the top of the case and removable plugs on the bottom, for convenient parallel connection without error. Each capacitor is supplied with a certificate of calibration giving two and three terminal measured capacitance. The Type 1409-G capacitor is mounted in the small case.
See 1409 to view all the capacitors in the series.
Specifications
- Capacitance: 0.002 μF
- Series Inductance: 0.050 μH
- Adjustment Accuracy: within ±0.05%
- Stability: Capacitance change is less than 0.01% per year
- Temperature Coefficient: capacitance; +35 ± 10 ppm per degree between 10 °C and 70 °C
- Dissipation Factor: Less than 0.0003 at 1 kHz and 23 °C (see curves). Measured dissipation factor at 1 kHz is stated in the certificate to an accuracy of ±0.00005
- Leakage Resistance: 5000 ohm-farads or 100 GΩ, whichever is the lesser
- Maximum Voltage: 500 V peak below 2.7 MHz
Links
Photos
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Change in capacitance as a function of frequency for typical Type 1409 capacitors.
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Dissipation factor as a function of frequency.
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Technical Drawing.
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Thermometer Access
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