505: Difference between revisions

Latest revision as of 22:02, 28 August 2024

General Radio 505

Capacitor

Available from 1934 to 1965

Manuals

Manual Needed.

Catalog History

Document	Year	Page
Catalog G2	1934	188
Bulletin 936	1935	20
Catalog H	1935	149
Catalog J	1936	38
Catalog K1	1939	56
Catalog K2	1942	52
Catalog K3	1944	48
Catalog K4	1945	48
Catalog L	1948	51
Catalog M	1951	49
Catalog N	1954	54
Catalog O	1956	155
Catalog P	1959	168
Catalog Q	1961	170
Catalog R	1963	153
Catalog S	1965	193

(All manuals in PDF format unless noted otherwise)

The General Radio 505 Capacitor was introduced in Catalog G2 (1934) and remained available through Catalog S (1965).

The Type 505 is a secondary capacitance standard using a silvered-mica dielectric. The capacitor is installed in a low-loss phenolic case along with Silica gel desiccant then sealed with wax. The Type 505 has almost as equally high stability as the 1409 Standard Capacitor at one quarter the cost. The Type 505 is found in many General Radio instruments as a capacitance standard. It is supplied in two case sizes, the small and large.

The 505 series of standard capacitors comprises

505-A – 100 pF
505-B – 200 pF
505-E – 500 pF

505-F – 1 nF
505-G – 2 nF
505-K – 5 nF

505-L – 10 nF
505-M – 20 nF
(505-Q – 50 nF)
505-R – 50 nF

505-T – 100 nF
505-U – 200 nF
505-X – 500 nF

Specifications

Accuracy: at 1 kHz, ±0.5% or ±3 pf, whichever is the larger
Dielectric: Silvered-Mica
Temperature Coefficient: Approximately +35 ppm per degree Centigrade between 10 and 50 C. Calibration is made at 23 C, at a frequency of 1 kHz

Links

Type 505 Series of Capacitors
Type	Capacitance	Dissipation Factor	Maximum Peak Voltage	Frequency Limit for Max Volts	Leakage Resistance	Code
505-A	100 pF	0.0006	700	10 MHz	>100,000 MΩ	0505-9701
505-B	200 pF	0.0004	700	6 MHz	>100,000 MΩ	0505-9701
505-E	500 pF	0.00035	500	4 MHz	>100,000 MΩ	0505-9705
505-F	0.001 μF	0.0003	500	2.3 MHz	>100,000 MΩ	0505-9706
505-G	0.002 μF	0.0003	500	1.3 MHz	>100,000 MΩ	0505-9707
505-K	0.005 μF	0.0003	500	630 kHz	>100,000 MΩ	0505-9711
505-L	0.01 μF	0.0003	500	360 kHz	>100,000 MΩ	0505-9712
505-M	0.02 μF	0.0003	500	210 kHz	>100,000 MΩ	0505-9713
#505-Q	0.05 μF	0.0003	350	32 kHz	>100,000 MΩ	CONDENJACK
#505-R	0.05 μF	0.0003	500	100 kHz	>100,000 MΩ	0505-9718
#505-T	0.1 μF	0.0003	500	50 kHz	>50,000 MΩ	0505-9720
#505-U	0.2 μF	0.0003	500	20 kHz	>25,000 MΩ	0505-9721
#505-X	0.5 μF	0.0003	500	10 kHz	>10,000 MΩ	0505-9724

#Mounted in large case.

Photos

Small Case

Large Case

@@ Line 7: / Line 7: @@
 |caption=General Radio 505 Capacitor
 |series=505
-|introduced=1935
+|introduced=1934
 |discontinued=1965
 |designers=
 |manuals=
 * '''Manual Needed.'''
+{{Catalog History}}
 }}
-The {{Title|General Radio 505 Capacitor}} was introduced in {{Bulletin 936}} and remained available through {{Catalog S}}.
+The {{Title|General Radio 505 Capacitor}} was introduced in {{Catalog G2}} and remained available through {{Catalog S}}.
-The Type 505 is a secondrary standard capacitor using a silvered-mica dielectric.  The capacitor is installed in a low-loss phenolic case along with Silica gel desiccant then sealed with wax. The Type 505 has almost as equally high stability as the [[1409]] Standard Capacitor at one quarter the cost. The Type 505 is found in many General Radio instruments as a capacitance standard. It is supplied in two case sizes, the small and large.
+The Type 505 is a secondary capacitance standard using a silvered-mica dielectric.  The capacitor is installed in a low-loss phenolic case along with Silica gel desiccant then sealed with wax. The Type 505 has almost as equally high stability as the [[1409]] Standard Capacitor at one quarter the cost. The Type 505 is found in many General Radio instruments as a capacitance standard. It is supplied in two case sizes, the small and large.
@@ Line 29: / Line 30: @@
 ==Links==
+* [[Media:GR Exp 505 01_1933.pdf|Experimenter January 1933 describing Type 505]]
 * [[Media:GR Exp 505 1457-K 10_1957.pdf|Experimenter October 1957 describing Type 505]]
@@ Line 52: / Line 53: @@
 |-
 |[[505-M]] || 0.02 μF || 0.0003  || 500  || 210 kHz  || >100,000 MΩ || 0505-9713
+|-
+|#[[505-Q]] || 0.05 μF || 0.0003  || 350  || 32 kHz  || >100,000 MΩ ||CONDENJACK
 |-
 |#[[505-R]] || 0.05 μF || 0.0003  || 500  || 100 kHz  || >100,000 MΩ || 0505-9718
@@ Line 63: / Line 66: @@
 |}
-* '''#Mounted in the large case.'''
+* '''#Mounted in large case.'''
 ==Photos==
@@ Line 79: / Line 80: @@
 <gallery>
 GR 505 Bottom Small Case.jpg
+GR Top Small Case.jpg
 GR 505 Right Small Case.jpg
 GR 505 Rear Small Case.jpg