参数资料
型号: 1794
厂商: B&K Precision
文件页数: 16/42页
文件大小: 0K
描述: POWER SPLY DC LINEAR 0-32V 0-30A
产品目录绘图: 1794, 1795
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 ~ 32VDC
电流 - 输出: 0 ~ 30A
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: BK1794
5.4.3
VOLTAGES AT VARIOUS PINS OF IC LM324 IS AS FOLLOWS ( IC-101 ) :-
IC PIN NO.
VOLTAGES & CHECK CONDITIONS
PIN1
PIN1
--
--
0V ( WHEN V POT KEPT AT MIN. POSITION IN CV MODE )
+5V ( WHEN V POT KEPT AT MAX. POSITION IN CV MODE )
PIN2 & 3--
+4.9V AT V POT MAX. POSITION.
PIN4
PIN7
PIN7
PIN8
PIN8
PIN9
PIN10
PIN14
--
--
--
--
--
--
--
--
+12V ALL CONDITION
0V AT CC POT MIN. POSITION.
0.5V AT CC POT MAX. POSITION.
+1V TO 3.5V IN CV MODE.
+10V TO +11V IN CC MODE.
0V.
-6mV.
+10 TO 11V IN CV MODE.
5.4.4
A.
B.
C.
D.
CHECK
CHECK
CHECK
CHECK
VOLTAGES AT D3
VOLTAGES AT D4
VOLTAGES AT Z101
VOLTAGES AT Z102
CATHODE +2V (CV) +10V (CC)
CATHODE +10V (CV) + 2V (CC)
CATHODE -4.7V
CATHODE +10V
5.4.5
CHECK ALL REGULATORS OUTPUT WITH RESPECT TO OUTPUT
+VE COMMON.
REF. PCB NO.
U1
U2
U3
PART NO.
IC7812
IC79L05
IC7805
PIN NO.
3
3
3
VOLTAGES
+12V
-5.0V
+5.0V
CHECK WITH RESPECT TO OUTPUT -VE AS COMMON.
U4
IC7812
3
+12.0V
All the above readings are approximate values. The given voltages & waveforms
are refering to a normal working unit. If find any Voltage or Waveform absent at
given points, then trace back to the associated circuits. This complets basic trouble
shooting test points.
5.5
PARTS ORDERING & REPLACING :
5.5.1 OBTAINING REPLACEMENT PARTS : Most electrical parts can be obtained
through your local distributor or representative. However you should be able to
obtain many of the standard components from a local commercial source in
13
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