Q o ka huakai kaapuni a ka Radio loaa

Ma kekahi Radio ma muli ma luna o ka loina hooponopono o e wae nā'ōlelo neaiaea pē mālie ma ka kekahi lawe alapine (frequency), i ka huli me ka nānā 'ana resonance o ka oscillating kaapuni, i mea no ka papa kuhikuhiE hehee ai o ka pa alima huakai kaapuni. Ma pehea e hooponopono i kēia alapine (frequency), hilinaʻi nui ma luna o ka mea e like ai o ka mea i loaa mai neaiaea e e wae.

Selectivity, a pa alima selectivity me ka nānā 'ana i ka lepa, keakea e mea hānai? Eaia e e attenuated, oiai kōkua maikaʻi - e ka ikaika. Q o ka huakai kaapuni - o ka huina objectively kakaʻikahi ma ka laulā hua'ōlelo, ka pomaikai o keia hana.

Ke resonant alapine (frequency) o ka huakai kaapuni ua nānā 'ia e ka Thompson haʻilula:

. f = 1 / (2π√LC), kahi

L - o ka inductance;

C - i ka waiwai o ka capacitance.

I mea e maopopo pehea oscillations ana i loko o ka huakai kaapuni, oe e ike pehea ia e hana.

A me ka capacitive, a me inductive wahie, pale aku i ka hanana o ka uila papa, akā, hana ia ma ke alo. Penei, ka mea e hana aku ana no ka muli o ke kaʻina hana oscillation, e pili ana i ka ia me ka mea e hana ana ma luna o ke kowali ka wā o nā skaters mau pahu aku ai ia i loko o kekahiʻaoʻao alternately. Theoretically, hoʻololi i ke kumukuai o ka mea pihana a'ōwili hao, i kekahi ke kū i ka resonant alapine (frequency) o ka loop coincide me ka lawe alapine (frequency) o ka pū i hiki Radio. Ka hou ka mea, e okoa, o ka emi mai e ia i ka hōʻailona e like ai. Ma ka hana pono, i ka pa alima ua pila hāpa e hoʻololi i ka capacitance o ka mea pihana.

Ka a pau nīnau mea, pehea i mau pahi oi, e piko ma ka pakuhi o ka alapine (frequency) pane o ka pa alima. Pono no laila, e hiki visually maopopo pehea maikaʻi kēia neaiaea like 'ākeʻakeʻa uhi pū nō e ikaika ae la. A me Q o ka huakai kaapuni o ka aiao a hoʻoholo i ka selectivity o? Eaia.

Ua ua ho'ākāka 'ia ma ka haʻilula:

Q = 2πFW / P, kahi

F - ka resonant alapine (frequency) o ka huakai kaapuni;

W - ikehu i loko o ka resonant a puni;

P - mana dissipation.

Q o ka huakai kaapuni pili i loko o laua a me ka inductance o ka mea pihana me ka nānā 'ana i kēia' haʻilula:

Q = R√ (C / L)

Mai na aiee o inductance a me ka capacitance akaka, a ua like no ka R, ka mea, ua hoʻomanaʻo aʻela ia heʻokoʻa ka reactance 'ōwili hao, a me ka resistive ke keʻena. No laila, i ka huakai kaapuni pinepine eh ÷ ike ai huakai kaapuni a me ilaila ekolu hehee wale: o ka capacitance C, inductance L a me ka ia'ku R.

Q o ka huakai kaapuni mea he waiwai inversely hapaʻauhau i ka uku o ka palaho oscillation maloko. Ke nui ia mea, o ka ke kua'āina o ka hoʻomaha o ka'ōnaehana.

Ma ka hana pono, i ka loa nui ololi mea e pono ai i ka Q o ka huakai kaapuni o ka mea e like ai o ka'ōwili hao, i hilinaʻi nui ma ka permeability o kona Kora naʻEsau, i ka helu o nā 'ana e haʻalele, ke degere o ka hoʻokaʻawale uea, a ma luna o kona ia'ku, a hoi mai ka pōʻino i ka hooholo ia ana o kiʻekiʻe-alapine (frequency) paialewa. Nolaila, e hoʻomaʻa i ke alapine (frequency) o ka hooponopono ia ana hoʻohana i ka ee iaaanu aey capacitors, i mea mau e puhi ia o ka wepa i loko, a mai o kekahi i kekahi i kuapo. Oia ka'ōnaehana mea typical no ka aneane pau ole-kikohoʻe radios.

Naʻe, i loko o ka pa alima me ka mīkini tuning no hoi i kona mau resonant i puhi ai, wale ma kā lākou mau resonant alapine (frequency) loli okoa.