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Remarks about module feedingThermoelectric modules are devices of direct current (DC): If there are current ripples in power source of a TE module then characteristics go down as illustrated in the formula below: ΔT/ΔTmax = 1/(1+K²); where K - ripples coefficient E.g. At DC feeding and ΔTmax=72° pulsation of power source is K = 0.2 (20%), then ΔT/ΔTmax = 1/(1+0.2²) = 0.96; ΔT = 0.96 ΔTmax = 69°; Quick-Cool recommends K < 0.1 (10%). At using impulse power source the current ripples coefficient can be calculated in accordance with the formula given below: K = I(Imp) / I(DC) x T(Imp)/T, where: I(Imp), T(Imp) - amplitude and duration of current impulse; I(DC) - value of direct current; T - pulse period. Presence of short-time impulses in feeding circuit wit T < 1 x 10-3 sec even of big amplitude up to ten of I (max) provides no negative influence upon "life time" of TE module. |
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 Remarks about module feeding |
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Heat Management