}ĿijƼСMO(sh)ӋDʾ܇D(zhun)·ģԭDͨ(yng)ָʾԓָʾl(f)⣩l(f)⣩Wq·Դ늉12V׃ָʾҎ(gu)顰12V 6WR0鶨ֵD(zhun)D(zhun)ָʾΪWqr늉ɶˌH늉Srg׃Ҏ(gu)DʾO(sh)ָʾ費׃늴FȦFֵӋ
ָʾ
D(zhun)_P(gun)Sc|c3͡4|rָʾl(f)B(ti)ͨ^F
D(zhun)_P(gun)Sc|c2͡3|rָʾl(f)B(ti)µČH늹ʣ
D(zhun)_P(gun)Sc|c4͡5|rָʾWq1minĵܣ
𰸡⣺P= ָʾ裺
RL= =
=24
·D֪D(zhun)_P(gun)34rD(zhun)D(zhun)ָʾͬr
P=UIָ֪ʾ̎l(f)rͨ^IL= =
=0.5A
tͨ^FI=2IL=20.5A=1A
D(zhun)_P(gun)Sc|c2͡3|rɈDҿ֪(dng)ָʾl(f)rR0ɶ˵늉U0=9.6V
(lin)·п늉ڸ늉ָ֮ʾɶ˵늉
UL=UU0=12V9.6V=2.4V
tָʾČHʣ
PL= =
=0.24W
D(zhun)_P(gun)Sc|c4͡5|rɈDҿ֪湤ڞ0.3sһڃ(ni)l(f)rg0.2sl(f)rg0.1s
tָʾWq1min
l(f)ĕrgt1= 0.2s=40sl(f)ĕrgt2=tt1=60s40s=20s
P= ɵl(f)ĵܣ
W1=PLt1=6W40s=240J
l(f)rĵܣ
W2=PLt2=0.24W20s=4.8J
ܣ
W=W1+W2=240J+4.8J=244.8J
𣺢ָʾ24D(zhun)_P(gun)Sc|c3͡4|rָʾl(f)B(ti)ͨ^F1AD(zhun)_P(gun)Sc|c2͡3|rָʾl(f)B(ti)µČH늹ʞ0.24WD(zhun)_P(gun)Sc|c4͡5|rָʾWq1minĵܞ244.8J
ָ֪ʾ~늉~(j)P= ָʾ裻·D֪D(zhun)_P(gun)Sc|c3͡4|rD(zhun)D(zhun)ָʾͬrָʾ̎l(f)B(ti)P=UIͲ(lin)·cͨ^FD(zhun)_P(gun)Sc|c2͡3|rɈDҿ֪R0ɶ˵늉(j)(lin)·늉cָʾɶ˵늉(j)P=
ָʾl(f)B(ti)µČH늹D(zhun)_P(gun)Sc|c4͡5|rɈDҿ֪湤ںһڃ(ni)rg(j)D(zhun)ָʾWq湤1min(ni)l(f)ĕrgMһl(f)ĕrg(j)P=
l(f)ĵܺl(f)rĵܣ֮ͼ鹲ܣ
}·BӵД늹ʹʽ(lin)·cWķɡ늹ʽđ(yng)P(gun)IǏĈDеóָʾĕrgl(f)rĕrg
c}P(gun)IWķɼ䑪(yng)õP(gun)֪R՚Wķɵđ(yng)ã ͬһֵ׃c늉oP(gun) @ɶ˵늉rͨ^ҲR=U/I (dng)늉׃rԽtͨ^ԽI=U/R (dng)һrԽtɶ˵늉ԽU=IRԼ늹Ӌ⣬˽늹Ӌ㹫ʽW=UItʽІλW(J)U(V)I(A)t룩
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51ΌrСAһҕRoNRǰҪڹٴεõ(yng)__________/hxRƄ
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