음향:electric_circuit:transformer:ll1517
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| 음향:electric_circuit:transformer:ll1517 [2024/04/10] – 만듦 정승환 | 음향:electric_circuit:transformer:ll1517 [2024/04/10] (현재) – 정승환 | ||
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| 줄 1: | 줄 1: | ||
| ======LL1517====== | ======LL1517====== | ||
| - | Lundahl LL1517 | + | **Lundahl LL1517, Audio Output Transformer** |
| - | | + | LL1517 is an audio output transformer for balanced or unbalanced drive. The transformer is built from two threesection coils, with primaries and secondaries separated by electrostatic shields, and a audio C-core of our own |
| - | * Spacing between rows of pins: 35.56 mm (1.4" | + | production. The transformer is housed in a mu-metal housing. |
| - | * Weight:105 g | + | The LL1517 has sufficient low copper resistance to meet broadcast specifications in a conventional drive |
| - | * Core:Audio C-core | + | configuration, |
| - | * Housing: | + | for mixed feedback design principles). |
| - | * Rec. PCB hole diameter:1.5 mm | + | |
| - | * Static resistance of each primary: | + | * Turns ratio: 1 + 1 : 1 + 1 |
| - | * Static resistance of each secondary: | + | |
| - | * Leakage inductance of secondaries (sec. in series):0.3 mH | + | * Spacing between rows of pins: 35.56mm(1.4" |
| - | * No-load impedance: | + | * Weight: |
| - | * Optimum source impedance: | + | * Core: Audio C-core |
| - | * Balance of output (according to IRT, source < 10Ω , Load 600Ω> | + | * Housing: Mu-metal |
| - | * Maximum output level before saturation (sec. in series, load 600Ω)+ | + | * Rec. PCB hole diameter: 1.5mm |
| - | * Distortion (achieved with mixed feedback drive circuit, load 600Ω)< 0.03 % @ 20 dBU, 30Hz | + | * Static resistance of each primary: 9.2Ω |
| - | * Frequency response (source 10Ω load 600Ω):10 Hz -- 80 kHz +/- 0.3 dB | + | * Static resistance of each secondary: 9.5Ω |
| - | * Loss across transformer (at midband with 600Ω load):0.3 dB | + | * Leakage inductance of secondaries(sec. in series): 0.3mH |
| - | * Isolation between primary and secondary windings / between windings and core:4 kV / 2 kV | + | * No-load impedance: Typically >600Ω@50Hz, +20dBU |
| + | * Optimum source impedance: Minus 18Ω(See above) | ||
| + | * Balance of output(according to IRT, source <10Ω, Load 600Ω): >60dB | ||
| + | * Maximum output level before saturation(sec. in series, load 600Ω): +24dBU@30Hz | ||
| + | * Distortion(achieved with mixed feedback drive circuit, load 600Ω): <0.03%@20dBU, 30Hz | ||
| + | * Frequency response(source 10Ω load 600Ω):10Hz ~ 80kHz +/- 0.3dB | ||
| + | * Loss across transformer (at midband with 600Ω load): 0.3dB | ||
| + | * Isolation between primary and secondary windings/ | ||
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음향/electric_circuit/transformer/ll1517.1712677249.txt.gz · 마지막으로 수정됨: 저자 정승환