参数资料
型号: 1796
厂商: B&K Precision
文件页数: 15/43页
文件大小: 0K
描述: POWER SPLY DC LINEAR 0-16V 0-50A
标准包装: 1
类型: 支架安装(AC 至 DC)
电源电压: 120VAC,230VAC
输出电压: 0 ~ 16VDC
电流 - 输出: 0 ~ 50A
显示器类型: LED
数字/字母数: 3(2)
输出数: 1
尺寸/尺寸: 15.750" L x 19.000" W x 5.250" H(400.05mm x 482.60mm x 133.35mm)
特点: 调节
稳压 - 线路: 0.01% + 2mV
稳压 - 负载: 0.01% + 2 mV
稳流 - 线路: 0.05% + 10mA
稳流 - 负载: 0.05% + 10mA
纹波: 1mV rms
重量: 50 磅(22.7kg)
其它名称: BK1796
5.3.6 If Fuse blows, connect the unit through a variable AC Source with a current
meter and monitor the current at no load. If the current is very high (more than 2
ampere or so) load, check for Bridge Rectifier short or shorted Diode,or Second-
ary Winding short, etc
5.3.7 If output voltage or current DPM's are not reading, check for loose connections
especially in crimping, soldering of Connectors.
WARNING
THE FOLLOWING SERVICING INSTRUCTIONS ARE FOR USE BY
QUALIFIED PERSONNEL ONLY. TO AVOID PERSONAL INJURY, DO NOT
PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN
OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.
REFER TO OPERATORS SAFETY SUMMARY AND SERVICE SAFETY
SUMMARY PRIOR TO PERFORMING ANY SERVICE.
5.4
VOLTAGE & WAVEFORM CHECK POINTS :
5.4.1 TEST EQUIPMENTS REQUIRED : Generally, Wide-band Oscilloscope 20MHz
Dual Trace, a probe 1:10 150MHz, and a multimeter 4? DMM, Rheostats, Variable
Line Source 20A, Test Leads are all that is needed to perform basic waveform and
voltage checks for diagnostic pusposes.
CONNECT THE MAINS CORD OF THE UNIT TO THE RATED I/P SOURCE.
5.4.2 Check the voltage & waveforms at test points TP1 to TP6 on PRSR 0896 PCB
with respect to output positive or at TP7 with the help of 4? DMM & CRO. Normal
voltages & waveforms are given below :-
Keep output voltage to max. position with front panel control. All readings
are with respect to TP7 as common :-
Test Points on Voltages on
AMP/FREQ.
WAVEFORM
PRSR PCB
TP1
TP2
TP3
TP4
TP5
TP6
DMM
+12.01V
+1.03V
-12.04V
-11.35V
+0.101V
+15.05V
Level on CRO
26.7V P-P / 99.8Hz
2V P-P / 99.8Hz
26.8V P-P / 99.6Hz
25.3V P-P / 99.6Hz
3V -P / 99.6Hz
26.8V P-P / 99.6Hz
on CRO
12
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