| 摘要 |
PCT No. PCT/EP88/01207 Sec. 371 Date Jul. 6, 1990 Sec. 102(e) Date Jul. 6, 1990 PCT Filed Dec. 28, 1988 PCT Pub. No. WO90/07816 PCT Pub. Date Jul. 12, 1990.In a circuit (20) for use in controlling a battery-charging process and producing an output (S) which has one of two distinct levels (S1, S2), these levels are independently adjustable by adjusting variable resistors (R1, R2). Switching between the two levels is effected by transistors (T1, T2) in response to a varying input signal (X). The input signal (X) is derived from a hydrogen/oxygen recombinator (40, FIG. 4, not shown) with a thermoelectric transducer which produces an abrupt change in output when the battery is fully-charged. To ensure a gradual switch-over to a lower battery-charging rate, the output of the transducer is passed via an integrator (41) to the circuit (20). The switch means for one of the resistors (R2) may be omitted (FIG. 1 not shown).
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