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参数资料
| 型号： | 1761 |
| 厂商： | B&K Precision |
| 文件页数： | 42/49页 |
| 文件大小： | 0K |
| 描述： | PWR SUPPLY 0-35V 0-3A TRIPLEOUT |
| 产品目录绘图： | 1760A, 1761 |
| 标准包装： | 1 |
| 系列： | 1760A |
| 类型： | 工作台（AC 至 DC） |
| 电源电压： | 120VAC |
| 输出电压： | 0 ~ 35VDC，0 ~ 35VDC，2 ~ 6.5VDC |
| 电流 - 输出： | 0 ~ 3A，0 ~ 3A，5A |
| 显示器类型： | LED |
| 数字/字母数： | 4（2） |
| 输出数： | 3 |
| 尺寸/尺寸： | 15.000" L x 10.500" W x 5.700" H（381.00mm x 266.70mm x 144.78mm） |
| 特点： | 独立或跟踪模式 |
| 精确度 - 伏特表；安培表： | 0.5% + 9 位数 |
| 稳压 - 线路： | 0.01% + 3mV, 10mV (3rd Output) |
| 稳压 - 负载： | 0.01% + 3mV，10mV（第 3 输出） |
| 稳流 - 线路： | 0.2% + 3mA |
| 稳流 - 负载： | 0.2% + 3mA |
| 纹波： | 1mV rms |
| 重量： | 21 磅（9.5kg） |
| 其它名称： | BK1761 |
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MAINTENANCE
ADJUSTMENTS
Table 2. Functions of Calibration Adjustments
This unit was accurately adjusted at the factory before
shipment. Readjustment is recommended only if repairs have
been made in a circuit affecting adjustment accuracy, or if you
have a reason to believe the unit is out of adjustment. However,
adjustments should be attempted only if a 4-1/2 digit
multimeter with an accuracy of ±0.1% dcv or better is available
( B+K Precision Model 391A or equivalent).
ADJ
R6
R10
R119
R122
FUNCTION OF ADJ LOCATION OF ADJ
“A” SUPPLY +5 V REF. MAIN BOARD
“B” SUPPLY +5 V REF. MAIN BOARD
“B” SUPPLY SERIES MAIN BOARD
TRACKING
4-6.5V A METER & A MAIN BOARD
LIMIT
If readjustment is required, use the following procedure. All
references to left and right are correct when facing the front of
the supply. The functions of the adjustments are shown in Table
R133
R134
R159
4-6.5V V METER
4-6.5V 3.9V REF.
4-6.5V 6.8V REF.
MAIN BOARD
MAIN BOARD
MAIN BOARD
2 and their locations are shown in Fig. 18.
R163
R164
“A” SUPPLY A METER MAIN BOARD
“B” SUPPLY A METER MAIN BOARD
I. “A” SUPPLY AND “A” METERING ADJUSTMENTS
1. Connect an accurate (±0.1%) external 4-l/2
digit
R304L “B” SUPPLY V METER “B” PANEL METER
R304R “A” SUPPLY V METER “A” PANEL METER
multimeter to measure the DC voltage at the output
terminals of the “A” SUPPLY .
2. Disengage the INDEP/TRACK mode switch (out) so that
the power supply is in the INDEP endent operating mode.
3. Set the “A” VOLTAGE controls (both Coarse and Fine )
to maximum (fully clockwise).
4. Adjust R6 ( “A” SUPPLY +5V REF ) on the main circuit
board (located on the right rear side of the supply) for a
reading as close to 30.40 volts (on the multimeter) as
possible.
5. Set the 0-30 V/4-6.5V switch to the 0-30V position and the
Right V/A switch to the V position.
42
1. Adjust R304 ( “A” SUPPLY V METER ADJ ) on
the “A” panel meter board (located on the right side
of the supply behind the “A”/4-6.5V LED Display )
for a reading of 30.4 volts on the “A”/4-6.5V LED
Display .
2. Set the “A” Coarse VOLTAGE control for a
reading of approximately 05.0 volts on the “A”/4-
6.5V LED Display .
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