| 摘要 |
a ROM driving portion of a start switch, a finish switch, resistors, capacitors, OR gates, a flip-flop, an oscillating circuit and a counter circuit connected to a ROM for storing all programs; a measuring portion driving circuit of inverters, resistors, relays and photo couplers connected to D0-D4 output terminals of the ROM, D6-D7 output terminals connected to a lamp driving circuit of decade counters, AND gates and inverters whose output lightens up lamps, D4, D6 terminals of the ROM connected to a motor driving portion via a flip-flop, AND gates, an inverter, a relay and a photo coupler, output of a photo-transistor driven by a motor being connected to the motor driving portion; and a measuring portion having a slidaks connected to a power supply portion, in which output power of a rectifying circuit is connected to a transformer via relay switches. Thus, high quality products having a precise function are selected during mass production of electronic pumps.
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