Figures 1 and 2 show a 1/3 HP PMDC motor from Pacific Scientific. Such motors list for about $200 to $300. They are typically used with with a pulse-width speed controller for applications like running conveyer belts that require good torque at all speeds. PMDC motors from 1/4 HP or ...
equipped with Agilent 5977 mass detector and HP-INNOWax column (30 m × 0.32 mm × 0.25 μm). Ultra-pure helium was used as carrier gas at a constant flow rate of 3 mL/min. The temperature of the column box was initially kept at 60 °C for 5 min, increas...
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