1214-D: Difference between revisions

1214-D (view source)

Revision as of 06:59, 21 April 2024

1 byte added , 21 April

no edit summary

Peter

Bureaucrats, Interface administrators, Suppressors, Administrators

2,370

edits

@@ Line 15: / Line 15: @@
 The {{Title|General Radio 1214-D Unit Oscillator}} was introduced in {{Catalog P}} and remained available through {{Catalog S}}.
-The Type 1214-D is unit oscillator specifically designed as a generator for the Type [[1611-B]] Capacitance Test Bridge.  Operating at a frequency of 120 Hz, the recommened frequency for testing electrolytic capacitors. The 1214-D output circuit uses two transformers, the first serves as a load for the oscillator tube, the second acts as an adjustable match for the Type [[1611-B]] bridge. A front panel phone jack acts as an input to the matching transformer for an external oscillator.  The single 117N7 tube contains the power supply Rectifier and Beam PA as the oscillator. A Thyrite element is used in the 117N7 grid circuit to limit oscillator amplitude. Like others in 1214 family the 1214-D uses a transformerless power supply. Other members of Type 1214 family are [[1214-M]], [[1214-A]], and [[1214-E]].
+The Type 1214-D is a unit oscillator specifically designed as a generator for the [[1611-B|Type 1611-B Capacitance Test Bridge]]. It operates at 120 Hz, the recommended frequency for testing electrolytic capacitors.
+The 1214-D output circuit uses two transformers, the first serving as a load for the oscillator tube, and the second acting as an adjustable match for the Type [[1611-B]] bridge. A front-panel phone jack acts as an input to the matching transformer for an external oscillator.
+A single 117N7 tube contains the power supply rectifier and a beam PA as the oscillator.
+A [[Thyrite]] element (varistor) is used in the 117N7 grid circuit to limit oscillator amplitude.
+Like other instruments in the 1214 family ([[1214-M]], [[1214-A]], and [[1214-E]]), the 1214-D's power supply is transformerless.
 ==Specifications==
@@ Line 26: / Line 32: @@
 ==Links==
-* [[Media:GR Exp 1214-AS2 08_1956.pdf|Experimenter describing Type 1214-AS2 August 1956]]
+* [[Media:GR Exp 1214-AS2 08_1956.pdf|Experimenter August 1956 describing Type 1214-AS2]]
-* [[Media:GR Exp 1214-D 07_1958.pdf|Experimenter describing Type 1214-D July 1958]]
+* [[Media:GR Exp 1214-D 07_1958.pdf|Experimenter July 1958 describing Type 1214-D]]
 * [[Media:GR 1611-B Capacitance Test Bridge 1611-0100-H 01-1965.pdf|General Radio 1611-B Manual]]