主题：【讨论】从纯技术角度，讨论X光管的寿命问题。

原文由 nameylf 发表:

建议你向岛津的工程师确认一下这个数据，50KV，30微安，使用功率才1.5W，功率太小了，可能会有问题。

原文由 heimuya 发表:
我们使用的岛津升高压要求慢速，飞利浦就可以很快，包括老化都是，是否说明飞利浦的比岛津好？

原文由 nameylf 发表:
SPELLMAN HIGH VOLTAGE ELECTRONICS CORPORATION

• 50KV AT 2 MA. 50 WATTS MAX.
• ADJUSTABLE INTEGRATED FILAMENT SUPPLY
• OVERVOLTAGE & SHORT CIRCUIT PROTECTION
• VOLTAGE & CURRENT PROGRAMMING
• LOCAL AND REMOTE EMISSION CONTROL
• SAFETY INTERLOCK
• OEM CUSTOMIZATION AVAILABLE
• CE MARKED
• UL RECOGNIZED 

The MNX Series is the result of Spellman’s exceptional
high voltage packaging and surface mount fabrication
techniques, coupled with its proprietary encapsulation
technology producing this ultra compact-sized OEM 50
Watt X-ray generator module.
The MNX Series is designed to power grounded cathode
X-ray tubes from a variety of well known manufacturers. It
features a 0 to 50kV high voltage output, and up to 2mA
of emission current limited to 50 Watts, operating from a
+24Vdc input. The MNX utilizes a closed loop filamentry
beam control circuit to provide a highly regulated beam
current. The ground referenced low noise dc filament
supply operates between 0.3 and 3.5 amps. Offering tight
regulation, high stability and low ripple, the MNX provides
users both local and remote analog control to set beam
voltage, emission current and filament current limit. An
optional USB, RS232 or ethernet interface is available.
TYPICAL APPLICATIONS
Powering grounded cathode X-ray tubes from
Kevex, Oxford, RTW, Superior, Varian and Trufocus.
OPTIONS
XCC    XRM Compatible HV Cable
SIC    Standard Interface Controller
(Ethenet, USB & RS232)
5VPM    0 to 5 Volt Programming and Monitor Scaling

SPECIFICATIONS
Input:
+24Vdc±10%, 4.0A maximum.
Output:
0 to 50 kV at 0 to 2 mA, limited to a maximum of 50 watts.
Voltage Control:
Local:    Internal multi-turn potentiometer to set voltage
from 0 to full output voltage.
Remote: 0 to +10Vdc proportional from 0 to full output voltage.
Accuracy: ±1%. ZIN: 10Mohm.


Emission Control:
Local:    Internal potentiometer to set beam current
between 0 and full output current.
Remote: 0 to +10Vdc proportional from 0 to full output current.
Accuracy : ±1%. ZIN: 10Mohm.
Filament limit and filament preheat control
capability is also provided.
DC Filament Supply:
Current: 3.5A, adjustable limit
Voltage: 5.0 volt limit
Voltage Regulation:
Load:    0.01% of output voltage no load to full load.
Line:    ±0.01% for ±10% change in input voltage.
Current Regulation:
Load:    0.01% of output current from 0 to rated voltage.
Line:    ±0.01% for ±10% change in input voltage.
Ripple:
0.1% p-p of maximum rated output voltage.
Environmental:
Operational: 0°C to +50°C
Storage: -40°C to +85°C
Humidity: 0% to 90%, non-condensing
Temperature Coefficient:
0.01% per °C, voltage and current.
Stability:
0.05% per 8 hours after 1/2 hour warm-up.
Voltage and Current Monitors:
0 to +10Vdc proportional from 0 to rated output.
Accuracy ±1%.
Dimensions:
Standard Unit:  5.00”H x 2.87”W x 8”D
(127.00mm x 72.90mm x 203.25mm).
XCC Option:    5.00”H x 2.87”W x 9”D
(127.00mm x 72.90mm x 228.65mm).
SIC Option:      5.75”H x 2.87”W x 8”D
(146.05mm x 72.90mm x 203.25mm).
Weight:
6.5 lbs. (2.9kg)

原文由 huibingzhang 发表:
杨，你好，一般用户每天在使用X光管，却无从了解X光管的专业知识，你给大家打开了一扇门，使大家的心里亮堂起来，大家谢谢你。

原文由 nameylf 发表:
怎么会没有人参与讨论？郁闷！