Page 52 - index
P. 52
48-ɫɭɪɟɬ
ȿɝɟɪ ɫɚɥɦɚԑɵ Ɋ ɞɟɧɟ ɤԧɥɛɟɭ ɠɚɡɵԕɬɵԕɬɚ ɠɚɬɫɚ (48 Ω-ɫɭɪɟɬ), ɨɧɞɚ ɬɿɤ
ɪɟɚɤɰɢɹ N Pn P cosI ԧɪɧɟɝɿɦɟɧ, ɚɥ ɦɚɤɫɢɦɚɥ ԛɣɤɟɥɿɫ ɤԛɲɿ
Fmax f P cosI ԧɪɧɟɝɿɦɟɧ ɚɧɵԕɬɚɥɚɞɵ.
§3. Ʉɟɞɿɪ-ɛԝɞɵɪ ɛɟɬɬɿԙ ɪɟɚɤɰɢɹɫɵ. Ԛɣɤɟɥɿɫ ɛԝɪɵɲɵ. Ԛɣɤɟɥɿɫ ɤɨɧɭɫɵ
Ʉɟɡ ɤɟɥɝɟɧ ɞɟɧɟ D ɞɟɧɟɫɿ KL ɤɟɞɿɪ-ɛԝɞɵɪ ɛɟɬɿɧɿԙ ԛɫɬɿɧɞɟ A ɧԛɤɬɟɫɿɧɟ
ɬɿɪɟɥɿɩ ɠɚɬɫɵɧ (49-ɫɭɪɟɬ). Ⱦɟɧɟɧɿԙ ɛɟɬɿ ɠɵɥɬɵɪ ɛɨɥԑɚɧɞɚ, ɬɨɥɵԕ ɪɟɚɤɰɢɹ
ɛɟɬɤɟ ɬɿɤ ɛɚԑɵɬɬɚɥԑɚɧ ɛɨɥɚɪ ɟɞɿ. Ȼɿɪɚԕ ɛԝɥ ɛɟɬ ɤɟɞɿɪ-ɛԝɞɵɪ ɛɨɥԑɚɧɞɵԕɬɚɧ,
ɬɨɥɵԕ ɪɟɚɤɰɢɹ ɟɤɿ ԕԝɪɚɭɲɵɞɚɧ ɬԝɪɚɞɵ, ɨɥɚɪ: ɬɿɤ ԕԝɪɚɭɲɵ – N ɠԥɧɟ ԛɣɤɟɥɿɫ
ɤԛɲɿ – Fɬ (ɥɚɬ. tritus – ԛɣɤɟɥɿɫ). Ⱥɬɚɥԑɚɧ ԕԝɪɚɭɲɵɥɚɪɞɵ ɩɚɪɚɥɥɟɥɨɝɪɚɦɦɚ
ɟɪɟɠɟɫɿɧ ɩɚɣɞɚɥɚɧɵɩ ԧɡɚɪɚ ԕɨɫɵɩ, ɤɟɞɿɪ-ɛԝɞɵɪ ɛɟɬɬɿԙ ɬɨɥɵԕ ɪɟɚɤɰɢɹɫɵɧ
( R ) ɚɥɚɦɵɡ. Ȼԝɥ ɪɟɚɤɰɢɹ ɬɿɤ ɛɚԑɵɬɩɟɧ (ɧɨɪɦɚɥɶɦɟɧ) I ɛԝɪɵɲɵɧ ԕԝɪɚɣɞɵ
(49-ɫɭɪɟɬ).
49-ɫɭɪɟɬ 50-ɫɭɪɟɬ
ȿɝɟɪ ԛɣɤɟɥɿɫ ɤԛɲɿɧɿԙ ɟԙ ԛɥɤɟɧ ɲɚɦɚɫɵɧ ( Fmax ) ɚɥɫɚԕ, ɨɧɞɚ ɛԝɥ
ɛԝɪɵɲɬɵԙ ɲɚɦɚɫɵ D -ԑɚ ɬɟԙ ɛɨɥɚɞɵ (50-ɫɭɪɟɬ). Ⱥɬɚɥԑɚɧ D ɛԝɪɵɲɵ -
Οɣɤɟɥɿɫ ɛΡɪɵɲɵ ɞɟɩ ɚɬɚɥɚɞɵ. 50-ɫɭɪɟɬɬɟɝɿ ABC ԛɲɛԝɪɵɲɵɧɚɧ:
tgD BC Fmax f.
AC N
50
