Ọla kọpa bụ oyi akwa igwe na-eduzikarị n'elu bọọdụ sekit (PCB).Tupu ịkọwa nguzogide ọla kọpa na PCB, biko mara na nguzogide ọla kọpa na-agbanwe na okpomọkụ.Iji chọpụta nguzogide ọla kọpa n'elu PCB, enwere ike iji usoro a.
Mgbe ị na-agbakọ uru nguzogide onye nduzi izugbe, enwere ike iji usoro a.
ʅ: ogologo onye nduzi [mm]
W: obosara onye nduzi [mm]
t: eduzi ọkpụrụkpụ [μm]
ρ: conductivity nke onye na-eduzi [μ ω cm]
Iguzogide ọla kọpa dị na 25°C, ρ (@ 25°C) = ~ 1.72μ ω cm
Ke adianade do, ọ bụrụ na ị maara na-eguzogide ọla kọpa kwa unit ebe, Rp, dị iche iche okpomọkụ (dị ka e gosiri na ọnụ ọgụgụ dị n'okpuru ebe a), i nwere ike iji na-esonụ usoro na-eme atụmatụ nguzogide nke dum ọla kọpa, R. Rịba ama na akụkụ nke ọla kọpa egosiri n'okpuru bụ ọkpụrụkpụ (t) 35μm, obosara (w) 1mm, ogologo (ʅ) 1mm.
Rp: nguzogide kwa mpaghara otu
ʅ: ogologo ọla kọpa [mm]
W: obosara ọla kọpa [mm]
t: ọkpụrụkpụ ọla kọpa [μm]
Ọ bụrụ na akụkụ nke ọla kọpa bụ 3mm n'obosara, 35μm n'obosara na 50mm n'ogologo, uru mgbochi R nke ọla kọpa na 25 ° C bụ.
Ya mere, mgbe 3A ugbu a na-asọba ọla kọpa n'elu PCB na 25 ° C, voltaji na-adaba ihe dịka 24.5mV.Otú ọ dị, mgbe okpomọkụ adahade ka 100 ℃, iguzogide uru na-abawanye site 29% na voltaji dobe na-aghọ 31.6mV.
Oge nzipu: Nov-12-2021