1409: Difference between revisions

Latest revision as of 16:24, 12 July 2024

General Radio 1409

Standard Capacitor

Available from 1956 to 1978+

Manuals

Manual Needed.

Catalog History

Document	Year	Page
Catalog O	1956	156
Catalog P	1959	169
Catalog Q	1961	163
Catalog R	1963	152
Catalog S	1965	192
Catalog T	1968	89
Catalog U	1970	115
Catalog73	1973	179
Catalog78	1978	70

(All manuals in PDF format unless noted otherwise)

The General Radio General Radio 1409 Standard Capacitor was introduced in Catalog O (1956) and remained available through Catalog 1978.

The 1409 Standard Capacitors are fixed mica capacitors 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.

Specifications

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 the limiting frequencies tabulated below

Links

Experimenter July 1957 describing Type 1409 Series

Type 1409 Series of Standard Capacitors
Type	Capacitance	Frequency Limit for Max Volts	Series Inductance	Code Number
1409-F	0.001 μF	4.7 MHz	0.050 μH	1409-9702
1409-G	0.002 μF	2.7 MHz	0.050 μH	1409-9707
1409-K	0.005 μF	1.3 MHz	0.050 μH	1409-9711
1409-L	0.01 μF	750 kHz	0.050 μH	1409-9712
1409-M	0.02 μF	430 kHz	0.050 μH	1409-9713
1409-R	0.05 μF	210 kHz	0.055 μH	1409-9718
1409-T	0.1 μF	120 kHz	0.055 μH	1409-9720
1409-U	0.2 μF	70 kHz	0.055 μH	1409-9721
#1409-X	0.5 μF	35 kHz	0.055 μH	1409-9724
##1409-Y	1 μF	17 kHz	0.070 μH	1409-9725

# Mounted in medium case.
## Mounted in large case.

Photos

Change in capacitance as a function of frequency for typical Type 1409 capacitors.
Dissipation factor as a function of frequency.
Technical Drawing.

Small Case

Thermometer Access

Medium Case

Large Case

@@ Line 1: / Line 1: @@
-Type '''1409 Series of Standard Capacitors'''.
+{{GR Product
+|model=1409
+|codes=
+|class=Capacitance Standards
+|summary= Standard Capacitor
+|image=GR 1409-K Close-Up.jpg
+|caption=General Radio 1409 Standard Capacitor
+|series=1409
+|introduced=1956
+|discontinued=1978+
+|designers=
+|manuals=
+* '''Manual Needed.'''
+{{Catalog History}}
+}}
+The {{Title|General Radio General Radio 1409 Standard Capacitor}} was introduced in {{Catalog O}} and remained available through {{Catalog 1978}}.
+The 1409 Standard Capacitors are fixed mica capacitors 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.
 ==Specifications==
+* '''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 the limiting frequencies tabulated below
 ==Links==
+* [[Media:GR Exp 1409 07_1957.pdf|Experimenter July 1957 describing Type 1409 Series]]
+{| class="wikitable" style="margin:auto"
+|+ Type 1409 Series of Standard Capacitors
+|-
+! Type!! Capacitance !! Frequency Limit<br>for Max Volts !!Series Inductance !!Code Number
+|-
+|[[1409-F]]  || 0.001 μF || 4.7 MHz || 0.050 μH ||1409-9702
+|-
+|[[1409-G]]  || 0.002 μF || 2.7 MHz || 0.050 μH ||1409-9707
+|-
+|[[1409-K]]  || 0.005 μF || 1.3 MHz || 0.050 μH ||1409-9711
+|-
+|[[1409-L]]  || 0.01 μF  ||750 kHz  || 0.050 μH ||1409-9712
+|-
+|[[1409-M]]  || 0.02 μF  || 430 kHz || 0.050 μH ||1409-9713
+|-
+|[[1409-R]]  || 0.05 μF  || 210 kHz || 0.055 μH ||1409-9718
+|-
+|[[1409-T]]  || 0.1 μF   || 120 kHz || 0.055 μH ||1409-9720
+|-
+|[[1409-U]]  || 0.2 μF   || 70 kHz  || 0.055 μH ||1409-9721
+|-
+|#[[1409-X]] || 0.5 μF   || 35 kHz  || 0.055 μH ||1409-9724
+|-
+|##[[1409-Y]]|| 1 μF     || 17 kHz  || 0.070 μH ||1409-9725
+|-
+|}
+* '''# Mounted in medium case.'''
+* '''## Mounted in large case.'''
@@ Line 9: / Line 66: @@
 <gallery>
+GR 1209 Figure 1.jpg|Change in capacitance as a function of frequency for typical Type 1409 capacitors.
+GR 1209 Figure 2.jpg|Dissipation factor as a function of frequency.
+GR 1409 Technical Drawing.jpg|Technical Drawing.
+</gallery>
+===Small Case===
+<gallery>
+GR 1409 Small Case Front.jpg
+GR 1409 Small Case Left.jpg| Thermometer Access
+GR 1409 Small Case Right.jpg
+GR 1409 Small Case Top.jpg
+GR 1409 Small Case Bottom.jpg
+GR 1409 Small Case Back.jpg
+</gallery>
+===Medium Case===
+<gallery>
+GR 1409-X Front.jpg
+GR 1409-X Terminal Medium Case.jpg
+GR 1409-X Bottom Medium Case.jpg
+</gallery>
+===Large Case===
+<gallery>
+GR 1409-Y Front A.jpg
+GR 1409-Y Rear Large Case.jpg
 </gallery>
 [[Category:Capacitance Standards]]
+__NOTOC__