DC POWER SUPPLY
Users Manual
V
A
DC POWER
SUPPLY
VOLTAGE
C.V.
INE
V
FINE
COARSE
CURRENT
FIN
CURRENT
ON OFF
VOLTAGE
C.C.
POWER
_
+
OFF ON
COARSE
Table of Contents
CHAPTER
1.
2.
3.
4.
Introduction
………………………………………………………………
1-1
Unpacking and Inspection
………………………………………………………………
1-2
Safety Precautions
………………………………………………………………
1-2
Safety Information
………………………………………………………………
1-3
Safety Symbols
………………………………………………………………
1-3
Instrument Front Panel
………………………………………………………………
1-4
Instrument Back Panel
………………………………………………………………
1-6
Operation
………………………………………………………………
2-1
Line Power Supply Setting
………………………………………………………………
2-1
Operation Procedure
………………………………………………………………
2-3
Specifications
………………………………………………………………
3-1
General Specifications
………………………………………………………………
3-1
Technical Parameters
………………………………………………………………
3-2
Maintenance
………………………………………………………………
4-1
Replacing the Fuse
………………………………………………………………
4-1
Chapter 1
Introduction
This manual contains information and warnings, which must be followed to ensure safe operation and retain the DC power
supply in safe condition.
WARNING
READ “SAFETY INFORMATION”
MAINTENANCE THE INSTRUMENT.
BEFORE
USING,
INSTALLING
OR
The DC power supply series are a bench top single output variable DC power supply. Stable regulated DC power supplies
allowing continuous adjustment of both the output voltage and output current levels. They have been designed according to
IEC1010–1 concerning safety requirements and comply with.
There are three display types for the power supply series monitoring output voltage and current. They are LCD, LED and two
pointer meters. One of them is equipped to the DC power supply. There are different numbers of output voltage and output
current ranges for the DC power supply series, too. These difference models of the DC power supply are available for choice
of user.
The output voltage and current range and equipped display type of the DC power supply series as follows:
OUTPUT VOLTAGE
(regulated)
0~15V
1-1
OUTPUT CURRENT
(regulated)
0~2A
0~3A
LCD
·
·
DISPLAY TYPE
LED
POINTER METER
·
·
·
·
Introduction
DC Power Supply Series
OUTPUT VOLTAGE
(regulated)
0~18V
0~30V
0~50V
OUTPUT CURRENT
(regulated)
0~2A
0~3A
0~2A
0~3A
0~5A
0~10A
0~20A
0~2A
LCD
·
·
·
·
·
0~3A
1
DISPLAY TYPE
LED
POINTER METER
·
·
·
·
·
·
·
·
·
·
These difference models of the DC power supply are available for choice of user.
Unpacking and Inspection
The packing should include the following items:
1．DC power supply
2．Power line cord
3．Instruction manual
4．Spare fuse
Please check to see that all of the above items are included.
Safety Precautions
1. Before applying power to your DC power supply, make sure that power select switch is correctly setting for you applicable AC
1-2
DC Power Supply
Users Manual
2.
3.
4.
5.
6.
7.
8.
power supply.
Connect the instrument to an AC power source using the power line core provided.
Do not connect a voltage that is greater than the current output voltage to the terminals of the instrument.
Never ground yourself when taking electrical measurements. Keep your body isolated from ground by using dry clothing;
rubber shoes, rubber mat, or any approved insulating material.
Never touch exposed wiring, connections or any live circuit when attempting to take measurements.
Avoid shorting circuit the output of DC power supply.
Set the voltage and current adjustment knobs as you desire.
The unit should be stored in a dry and well ventilated place and the power cord removed if storing for long periods.
Safety Information
The DC power supply series has been designed according to IEC1010 – 1 concerning safety requirements for electrical
measuring instruments with an overvoltage category (300V CAT II) and pollution 2.
Safety Symbols
Important safety information, refer to the operating manual.
DC – Direct current.
Earth ground.
1-3
Introduction
1
Safety Precautions
Caution! Hot surface. Avoid contact.
Conforms to European Union directives.
Instrument Front panel
Figure 1-1
DC POWER
SUPPLY
2
1
2
13
5
CURRENT
1
3
VOLTAGE
3
4
13
CURRENT
5
6
7
VOLTAGE
C.C.
FINE
C.V.
COARSE
FINE
COARSE
ON OFF
8
POWER
_
10
11
+
OFF ON
12
9
15/18V
9
10
11
12
30/50V 2/3/5A
1-4
DC Power Supply
Users Manual
1
2
3
4
5
6
7
FINE
ON OFF
COARSE
FINE
COARSE
CURRENT
VOLTAGE
C.C.
C.V.
300V
CATⅡ
8
POWER
9
10
11
12
30V 10/20A
1.
2.
3.
1-5
OUTPUT VOLTAGE INDICATOR
This indicator shows output voltage as measured at the output terminals.
There is LCD or LED or pointer meter display type. They are available for choice of user.
OUTPUT CURRENT INDICATOR
This indicator shows output current as measured at the output terminals.
There is LCD or LED or pointer meter display type. They are available for choice of user.
COARSE(MAIN) VOLTAGE REGULATOR
Introduction
Instrument Front Panel
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
1
Adjust output voltage of the DC power supply.
FINE VOLTAGE REGULATOR
This is a fine control. Adjust output voltage of the DC power supply.
COARSE(MAIN) CURRENT REGULATOR
Adjust output current of the DC power supply and delivered.
FINE CURRENT REGULATOR
This is a fine control. Adjust output current of the DC power supply and delivered.
C.C. INDICATOR
Constant current mode indicator
C.V. INDICATOR
Constant voltage mode indicator
POWER ON/OFF SWITCH
This is main power switch of the instrument.
NEGATIVE OUTPUT TERMINAL
GROUND OUTPUT TERMINAL
POSITIVE OUTPUT TERMINAL
POINT METER ZERO (only pointer meter display)
Each pointer meter has a mechanical screw adjustment for setting the zero point. Using a small screwdriver, turn off
the power and adjust the screw under the meter respectively to read zero. There is only pointer meter model.
Instrument Back Panel (Figure 1-2)
1.
2.
HEAT SINK
There is an
on the heat sink. It indicates "caution! Hot surface avoid contact".
POWER SELECT SWITCH
1-6
DC Power Supply
Users Manual
3.
Two kinds of power 220VAC and 110VAC 50Hz/60Hz can be supplied to the instrument. According to user’s needs,
setting it
FUSES
There are two fuses in the AC power input socket. One is in use and the other is for spare part.
The fuse of The DC power supply series as follows:
OUTPUT VOLTAGE
Regulated
0~15V
0~18V
0~30V
0~50V
4.
1-7
AC POWER INPUT
OUTPUT CURRENT
regulated
FUSE TYPE
line 220VAC
FUSE TYPE
line 110VAC
0~2A
T 1A L 250V
T 2A L 250V
0~3A
0~2A
T 1A L 250V
T 1A L 250V
T 2A L 250V
T 2A L 250V
0~3A
0~2A
0~3A
0~5A
0~10A
0~20A
0~2A
T 1A L 250V
T 1A L 250V
T 2A L 250V
T 3.15A L 250V
T 5A L 250V
T 8A L 250V
T 2A L 250V
T 2A L 250V
T 2A L 250V
T 4A L 250V
T 6.3A L 250V
T 10A L 250V
T 15A L 250V
T 4A L 250V
0~3A
T 3.15A L 250V
T 6.3A L 250V
Introduction
Instrument Back Panel
1
Figure 1-2
1
!
CAUTION
98TO122V ~
50/60Hz
198TO242V ~
50/60Hz
1
220
3
3
4
15/18V
2
4
30/50V 2/3/5A
1
!
CAUTION
98 TO 122V ~
50/60Hz
220
198 TO 242V~
50/60Hz
2
1
CAUTION!
HOT SURFACE.
AVOID CONTACT.
3
4
!
3
FUSE:XXXXXXXX
4
30V 10A
30V 20A
1-8
DC Power Supply
Users Manual
WARNING
To avoid user for injury and the instrument for damage, the voltage value of AC power
must be examined with same the power requirements of instrument before connect power
cord to live power source.
WARNING
To avoid electrical shock, disconnect power cord from live power source and remove the
test leads and any input signals before replacing the power fuses. Replace it only with the
same type of fuses.
1-9
Chapter 2
Operation
Introduction
WARNING
To avoid electric shock or personal injury, read “Safety Precautions” and “Safety
Information” before Operation.
Before making any operation always examine the DC power supply and accessories used with it for damage, contamination
(excessive dirt, grease, etc.) and defects. Examine the test leads for cracked or frayed insulation and make sure the lead plugs
fit snugly into the output jacks. If any abnormal exist do not attempt to make any operation.
Line Power Supply Setting (Figure 2-1)
(Only for the instrument with POWER SELECT SWITCH )
Two kinds of AC line, 220VAC 50Hz/60Hz or 110VAC 50Hz/60Hz, can be supplied to the instrument. Set it with a screwdriver to
adapt your AC line.
Check to be sure that power select switch on back panel is switch to correct line voltage.
Check to be sure that fuse is correct rating current.
2-1
DC Power Supply
Users Manual
Figure 2-1
!
!
CAUTION
98TO122V ~
50/60Hz
220
198TO242V ~
50/60Hz
CAUTION
98TO122V ~
50/60Hz
198TO242V ~
50/60Hz
110
CAUTION
The applicable AC power supply range is:
220VAC ± 10% (198 to 242V~) 50Hz/60Hz or 110VAC ± 10% (98 to 122V~) 50Hz/60Hz.
NOTE: The instrument without POWER SELECT SWITCH is factory pre-set in accordance with your main voltage when your
local distributor place the order with the factory.
2-2
Operation
Operating Procedure
2
Operating Procedure
CONSTANT VOLTAGE MODE
1.
Turn the voltage regulator anti-clockwise to minimum position and the current regulator clockwise to maximum position.
2.
Press the power ON / OFF switch to ON.
3.
Turn the voltage regulator clockwise to that you are desirous of output voltage value.
4.
Connect the positive output terminal and negative output terminal with a load or similar component.
5.
The voltage regulator controls the output voltage indicator. Indicator shows that output voltage of the output terminals.
CONSTANT CURRENT MODE
1.
Turn the voltage regulator clockwise to maximum position and the current regulator anti – clockwise to minimum
position.
2.
Press the power ON/ OFF switch to ON.
3.
Connect the positive output terminal and negative output terminal with a load or similar component.
4.
Turn the current regulator clockwise to that you are desirous of output current value.
5.
The voltage regulator controls the output voltage indicator. The current regulator controls the output current indicator.
Indicator show that output voltage and current of the output terminals.
RESTRICTED CURRENT PROTECTION MODE
1.
Press the power ON/ OFF switch to ON.
2.
Turn the current regulator anti-clockwise to minimum position then clockwise a little.
3.
Turn the voltage regulator clockwise to that you are desirous of output voltage level position (approx.1.5V).
4.
Link the positive and negative output terminals with a wire.
5.
Turn the current regulator clockwise to get the current level at which the restricted current protection will be active as
you desire.
2-3
DC Power Supply
Users Manual
6.
Remove the wire linked to the positive and negative output terminals. Connect the positive output terminal and negative
output terminal with a load or similar component.
7.
When the output current achieves the setting value of restricted current protection, and the restricted current protection
is active.
NOTE: After setting of the restricted current protection, if the current regulator is turned again, the restricted current protection
range will be changed.
C.C. AND C.V. INDICATOR (Only for the instrument with C.C. and C.V. INDICATOR )
The C.C. indicator is controlled by the constant current mode. Otherwise C.V. indicator is controlled by the constant voltage
mode.
CAUTION
The DC power supply series has perfect restricted current protection, Even so, when the output terminal is short - circuit, the DC
power supply should be turned off and the short - circuit should be removed before continuing operation because the power
transistors in the instrument will bear heavy.
The AC power must be switched off before servicing and servicing should be referred to a qualified person.
CAUTION
Using this appliance in an environment with a strong radiated radio - frequency electromagnetic field (approximately 3V/m) may
influence its measuring accuracy.
2-4
Chapter 3
Specifications
General Specifications
Safety:
Temperature:
Relative Humidity:
Protection:
Designed comply with IEC 1010 -1 specifications. CAT.Ⅱ300V
0℃ to 40℃ for operating, -10℃ to 50℃ for storage
Under 75% rated output power for continuous, upward of 75% rate output power for one
hour.
20% to 80% RH (0℃ to 40℃).
constant current and short - circuit protection
Weight & Size
OUTPUT VOLTAGE (regulated)
0~15V
0~18V
0~30V
OUTPUT CURRENT (regulated)
0~2A
0~3A
0~2A
WEIGHT
Approx. 3kg
Approx. 4kg
Approx. 4kg
SIZE
206(L) ´ 110(W)´ 153(H) mm
206(L) ´ 110(W)´ 153(H) mm
206(L) ´ 110(W)´ 153(H) mm
0~3A
0~2A
Approx. 4.5kg
Approx. 4kg
206(L) ´ 110(W)´ 153(H) mm
291(L) ´ 136(W)´ 158(H) mm
0~3A
Approx. 5kg
291(L) ´ 136(W)´ 158(H) mm
3-1
DC Power Supply
Users Manual
OUTPUT VOLTAGE (regulated)
0~30V
OUTPUT CURRENT (regulated)
0~5A
0~10A
0~20A
0~2A
WEIGHT
Approx. 3kg
Approx. 12kg
Approx. 15kg
Approx. 5kg
SIZE
291(L) ´ 136(W)´ 158(H) mm
365(L) ´ 265(W)´ 164(H) mm
365(L) ´ 265(W)´ 164(H) mm
291(L) ´ 136(W)´ 158(H) mm
0~50V
0~3A
Approx. 6kg
291(L) ´ 136(W)´ 158(H) mm
Technical Parameters
Input voltage :
220V AC ± 10% 50HZ/60HZ ± 2HZ or 110V AC ± 10% 50HZ/60HZ ± 2HZ
Voltage indication accuracy:
LED display and LCD display ±1%±2digits, Pointer meter display 2.5%
Current indication accuracy:
LED display and LCD display ±2%±2digits, Pointer meter display 2.5%
Output Voltage and Current:
OUTPUT VOLTAGE (regulated)
0~15V
0~18V
0~30V
3-2
OUTPUT CURRENT(regulated)
0~2A
0~3A
0~2A
0~3A
0~2A
0~3A
Specifications
Technical Parameters
3
Output Voltage and Current:
OUTPUT VOLTAGE (regulated)
OUTPUT CURRENT(regulated)
0~5A
0~10A
0~20A
0~2A
0~30V
0~50V
Source Effect(Line regulation):
Loading Effect(Load regulation):
Ripple and noise:
0~3A
CV≤0.01%+1mV
CV≤0.01%+3mV
CV≤0.5mVr.m.s
CC≤0.2%+1mA
CC≤0.2%+3mA
CC≤3mAr.m.s
To obtain the stability guarantee of source and loading effect, allow the instrument to warm up for at least 15 minutes.
3-3
Chapter 4
Maintenance
Introduction
Do not attempt to repair or service your instrument unless you are qualified to do so and have the relevant calibration,
performance test, and service information.
Replacing the Fuse
WARNING
Turn off the power switch, remove the power line cord from the power socket and
disconnect the test leads at output terminals before replacing the fuse. Replace it only with
same type of fuse.
4-1
Maintenance
Replacing the Fuse
4
Figure 4-1
15/18V FUSE
4-2
DC Power Supply
Users Manual
Figure 4-2
!
CAUTION
98TO122V ~
50/60Hz
198TO242V ~
50/60Hz
220
30/50V FUSE
4-3
WLS303
R1
C3
220uF/25V
220uF/25V
WL431
K2
K1
D6
1N4002
R80
1.4KΩF
DW1
6.2V
0.36ΩJ/5W
K3-3
R10
R30
10KΩF
11
HY3010-T
PCB-HY3020(2)
2
U3
3
C10
1
2
VOT+
VOT-
HA17741
100pF
-6V
5
R25
6
C83
C16
VR3
6.8KΩ
C13
2.2uF/25V
-15V
123J
8
U4C
LM324N
C14
D80 1N5402
10
VR4
1KΩ
9
+12V
123J
C15
2.2uF/25V
12
R23
7.5KΩF
R33
24KΩF
680KΩF
7
U4B
LM324N
680KΩF
D81
1N4148
C11
1uF/50V
PCB-HY3003(1)
2
123J
R24
10KΩF
+12V
100pF
6
1
U4A
LM324N C12
VR6
6.8KΩ
R26 15KΩF
C9
LED2
Φ5/RED
VR5
200Ω
R34 2.4KΩF
VR1 10K
100pF
R32
3.9KΩF
R31
11
9
7
Q11
C1008
-6V
D10A~E
1N5408
10
10
LED1
Φ5/RED
Q4
C1008
8
HA17741
C8
R9
1KΩJ/5W
3
U2
6
K1-3
D9A~E
1N5408
D
K1-1 K1-2
1N4002
R12
1KΩF
CUR+
CUR-
Q9
C1008
3
7
9
C
R19
R18
680KΩF
10KΩF
2
PCB-HY3020(2)
DW2
2.4V
C6A~B 4700uF/63V
D8A~E
1N5408
D7A~E
1N5408
K2-1
D11
C7
100pF
6
1
4
K2-3
A
8
+12V
VR2
5K
PCB-HY3020(2)
Q2
D313
5
4
K2-2
R14
1KΩF
1
4
B
R13
Q1
C1008
7
N1
Q5
C1008
B
10ΩF/0.5W
6
1
2
J5
15
(CUR+)
+12V
K3-1
CUR+
J3
VOT+
R99
0.36ΩJ/5W
Q8
10KΩF
E
24KΩF
R101
2N3055
100ΩF
K3-2
2N3055
R98B
R100B
R102B
F
2
3
33KΩF
0.36ΩJ/5W
Q7
2N3055
R99B
R11
100ΩJ/5W
5
R6
15
11
6
12
9
8
10
2.2uF/25V
C
Q8B
N1
R5
R22 3.9KΩF
-15V
R101B
R21 15KΩF
1KΩF/0.5W
1
8
7
6
5
4
3
2
1
PCB-HY3020(2)
0.36ΩJ/5W
Q7B
2N3055
J2
(CUR-)
R20 3.9KΩF
-6V
15
14
R103
0.36ΩJ/5W
Q3
2N3055
4
2N3055
R8
1
2
1
R103B
0.36ΩJ/5W
Q3B
R7
560ΩJ/2W
PCB-HY3003(1)
C2
220uF/25V
100ΩF
1N4002
R98
R100
R102
1N4002
H
I
5
13
Q6
A708
R4
10KΩF
D4
J1
J4
12
D3
K3
D13
1N4002
R35 15KΩF
1N4002
G
R3
470ΩF/0.5W
C1
R2
20KΩF/0.5W
1N4002
D2
C4
47uF/25V
D1
DW6
2
11
430ΩF/0.5W
R36
10KΩF
C80 470uF/63V
Vout
GND
Vin
3
C81 104J/63V
L7812CV
D5 1N4002
+12V
U1
1
R37
30KΩF
DW4
2.4V
R81
1KΩF
PCB-HY3020(6)
VR7
1KΩ
DW5
15V
Q10
A708
14
PCB-HY3003(1) VOT-
PCB-HY 3002D（2）
FUSE1
5A250V
AC IN
HY3010 的电路原理图（2）借用：HY3020 的电路原理图（2）
SW1
转换开关
CS
1
6
1
5
2
N1
2
4
3
3
N1
设计
日期
材
名
审核
日期
料
称
批准
日期
重量
比例
4
MASTECH
深圳华谊仪表公司
版
本
A0
首次用于
HY3010
电路原理图(1)
图
HMJ20001B31
号
共
2
张
第
1
张