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전기음향:electric_circuit:passive_component:transformer:ll1538

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전기음향:electric_circuit:passive_component:transformer:ll1538 [2026/07/07] – 제거됨 - 바깥 편집 (알 수 없는 날짜) 127.0.0.1전기음향:electric_circuit:passive_component:transformer:ll1538 [2026/07/07] (현재) – ↷ 링크가 이동 작업으로 인해 적응했습니다 145.223.131.60
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 +======LL1538======
  
 +**Lundahl LL1538 and LL1538XL, Microphone Input Transformers**
 +
 +The LL1538 and the LL1538XL are high performance microphone input transformers, each with a high permeability
 +mu-metal core and two three-section coils.
 +In the LL1538XL the core is about 45% larger than in the LL1538, resulting in a larger level capability. In both types,
 +primary and secondary windings are separated by electrostatic shields. The three-section winding structure of the
 +transformers results in a very low leakage inductance and thus an excellent frequency response.
 +The transformers are encapsulated in mu-metal cases for magnetic shielding.
 +
 +=====LL1538=====
 +  * Turns ratio: 1 + 1 : 5
 +  * Dimensions(Max. Length x Width x Height above PCB(mm)): 38 x 24 x 17 
 +  * Spacing between pins: 5.08mm (0.2") 
 +  * Spacing between rows of pins: 27.94mm (1.1")
 +  * Weight: 46g
 +  * Rec. PCB hole diameter: 1.5mm
 +  * Static resistance of each primary: 44W
 +  * Static resistance of each secondary: 880W
 +  * Distortion(primaries connected in parallel, source impedance 200W): 0.2%@0dBU(0.775Vrms) primary level(50Hz), 1%@ +10dBU(2.5Vrms) primary level(50Hz)
 +  * Self resonance point: >120 kHz 
 +  * Optimum termination for best square-wave response(Connection 1:5, source imp. 200W): No termination necessary
 +  * Frequency response(source 200W, no termination) 10Hz - 100kHz +/- 0.3dB
 +  * Isolation between windings/between windings and shield 4kV/2kV
 +
 +=====LL1538XL=====
 +  * Turns ratio: 1 + 1 : 5
 +  * Dimensions(Max. Length x Width x Height above PCB(mm)): 38 x 24 x 20.5
 +  * Spacing between pins:5.08mm(0.2")
 +  * Spacing between rows of pins: 27.94mm(1.1")
 +  * Weight: 65g
 +  * Rec. PCB hole diameter: 1.5mm
 +  * Static resistance of each primary: 61W
 +  * Static resistance of each secondary: 975W
 +  * Distortion(primaries connected in parallel, source impedance 200W) 0.2%@+3dBU(1.1Vrms) primary level(50Hz), 1%@+13 dBU(3.5Vrms) primary level(50Hz)
 +  * Self resonance point: >120kHz
 +  * Optimum termination for best square-wave response(Connection 1:5, source imp. 200W): No termination necessary
 +  * Frequency response(source 200W, no termination): 10Hz - 80kHz +/- 0.3dB
 +  * Isolation between windings/between windings and shield 4kV/2kV
 +
 +{{전기음향:electric_circuit:passive_component:transformer:20240410-005540.png}}
 +
 +{{전기음향:electric_circuit:passive_component:transformer:20240410-012536.png}}
 +
 +{{tag>트랜스포머}}
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