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一、电源种类及用途 针式打印机的电源主要有两组;一组是+5V,主要供逻辑电路、操作面板和走纸电机锁定用。对于采用“高压驱动、低压锁定”字车电机的打印机来说,+5V也供给字车电机,作为锁定电源。另一组是高压电源,用于驱动打印头、字车电机和走纸电机。由于各种型号的打印机所采用的步进电机不同,驱动电路设计也有所不同,故高压电源的规格不统一。现将常见针式打印机高压电源列于下表中。除上述两组电源外,有的针式打印机还有+12V或+12V电源,主要用于RS—232C串行接口板等。
First, the power supply type and purpose There are two main types of pin printer power supply; a group is +5 V, mainly for logic circuits, operating panels and paper-motor lock. For a printer with a “high-voltage drive, low-voltage lock” carriage motor, +5 V is also supplied to the carriage motor as a locking power supply. The other is a high-voltage power supply, used to drive the print head, carriage motor and paper feed motor. As various types of printers used in the stepper motor is different from the drive circuit design is different, so the high-voltage power supply specifications are not uniform. Now common pin printer high voltage power supply in the table below. In addition to the above two groups of power supply, some needle printers have +12 V or +12 V power supply, mainly for RS-232C serial interface board.