107-K: Difference between revisions
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{{GR Product | {{GR Product | ||
|model=107-K | |model=107-K | ||
|codes=HARPY | |||
|class=inductance standards | |class=inductance standards | ||
|summary=Variable Inductor | |summary=Variable Inductor | ||
| Line 6: | Line 7: | ||
|caption=General Radio 107-K Variable Inductor | |caption=General Radio 107-K Variable Inductor | ||
|series=107 | |series=107 | ||
|introduced= | |introduced=1932 | ||
|discontinued=1968 | |discontinued=1968 | ||
|designers= | |designers= | ||
| Line 13: | Line 14: | ||
{{Catalog History}} | {{Catalog History}} | ||
}} | }} | ||
The {{Title|General Radio 107-K Variable Inductor}} was introduced in {{Catalog | The {{Title|General Radio 107-K Variable Inductor}} was introduced in {{Catalog G1}} and remained available through {{Catalog T}}. | ||
The Type 107-K is variable inductor or "Variometer" of the Ayrton–Perry winding | The Type 107-K is a variable inductor or "Variometer" of the [[wikipedia:Ayrton–Perry winding|Ayrton–Perry winding]] design. It contains two circular coils arranged within one another, a stator or fixed coil and a rotor coil attached to a calibrated inductance dial. By changing the orientation of the rotor coil, inductance can be varied. The leads of the two coils are brought out to four binding posts where connections determine series, parallel or mutual inductance settings. Shorting links are provided for this purpose. The 107-K featured a Bakelite panel and walnut case. A tag attached to the panel displays the actual values. | ||
==Specifications== | ==Specifications== | ||
| Line 25: | Line 26: | ||
* '''Maximum Current:''' 6 A | * '''Maximum Current:''' 6 A | ||
* '''DC Resistance:''' 0.38 Ω | * '''DC Resistance:''' 0.38 Ω | ||
* '''Maximum Power:''' 15 W | |||
==Links== | ==Links== | ||
* [[Media:GR Exp 107 06_1932.pdf|Experimenter June 1932 describing Type 107 Series]] | * [[Media:GR Exp 107 06_1932.pdf|Experimenter June 1932 describing Type 107 Series]] | ||
* [[Media:GR Exp 107 01_1935.pdf|Experimenter January 1935 describing Type 107 Series]] | * [[Media:GR Exp 107 01_1935.pdf|Experimenter January 1935 describing Type 107 Series]] | ||
{{107 Series}} | |||
==Photos== | ==Photos== | ||
Latest revision as of 05:10, 3 August 2024
The General Radio 107-K Variable Inductor was introduced in Catalog G1 (1932) and remained available through Catalog T (1968).
The Type 107-K is a variable inductor or "Variometer" of the Ayrton–Perry winding design. It contains two circular coils arranged within one another, a stator or fixed coil and a rotor coil attached to a calibrated inductance dial. By changing the orientation of the rotor coil, inductance can be varied. The leads of the two coils are brought out to four binding posts where connections determine series, parallel or mutual inductance settings. Shorting links are provided for this purpose. The 107-K featured a Bakelite panel and walnut case. A tag attached to the panel displays the actual values.
Specifications
- Self-Inductance Series: 90 to 500 μH
- Self-Inductance Parallel: 22.5 to 125 μH
- Mutual-Inductance: 0 to 110 μH
- Accuracy: 1%
- Maximum Current: 6 A
- DC Resistance: 0.38 Ω
- Maximum Power: 15 W
Links
- Experimenter June 1932 describing Type 107 Series
- Experimenter January 1935 describing Type 107 Series
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