| 摘要 |
1,141,127. Automatic current control. FRIDEN Inc. March 22, 1967 [June 2, 1966], No.13344/67. Heading G3R. [Also in Division H2] In an arrangement for operating a print hammer 34 by discharging a charged capacitor 28 through an inductive coil 30 whose core 40 then attracts the hammer end 43, the capacitor is charged at constant current from a unidirectional source 26 through a regulator 10 comprising a transistor 12, a Zener diode 14 and resistors 16, 20. A typical operating cycle of charge and discharge is described, Figs. 2A - 2C (not shown). |
