| 摘要 |
This appts. extracts two kind of concentrated coffee from the same amount coffee powder. It has two switches for selecting lower- concentrated or high-concentrated coffee, and its memory circuits contain the operating position. A counter, which is operated by the start switch, produces a time control singanl to the driving circuits. The first discriminate circuit, which is actuated by the time control signal, is used by the highconcentration controls and the second discriminate circuit is used by the lower-concentration.
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