Scientech Technologies Scientech 4077 User manual

Multiple Power Supply
Scientech 4077
Learning Material
Ver.1.1
An ISO 9001:2008 company
Scientech Technologies Pvt. Ltd.
94, Electronic Complex, Pardesipura, Indore - 452 010 India,
+ 91-731 4211100, : [e-mail] , : www.ScientechWolrd.com

Scientech 4077
Scientech Technologies Pvt. Ltd. 2
Save paper, save trees, save earth
Dear User,
We request you to use the Learning material in the CD form
provided with this supply.
Your this act will help to save paper.
Please remember that each paper manual requires 50-100 sheets of paper
on an average.
Your CD learning material has
colourful diagrams,
plenty of theory,
detailed experiments with observation tables,
frequently asked questions, etc.
…….. and more so sometimes videos as well.
Scientech Eco Foundation

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Scientech Technologies Pvt. Ltd. 3

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RoHS Complian
ce
Scientech Products are RoHS Complied.
RoHS Directive concerns with the restrictive use of Hazardous substances (Pb, Cd, Cr, Hg, Br compounds)
in electric and electronic equipments.
Scientech products are “Lead Free” and “Environment Friendly”.
It is mandatory that service engineers use lead free solder wire and use the soldering irons upto (25 W) that
reach a temperature of 450°C at the tip as the melting temperature of the unleaded solder is higher than the
leaded solder.
Multiple Power Supply
Scientech 4077
1. Safety Instructions 5
2. Introduction 6
3. Features 7
4. Technical Specifications 8
5. Front Panel Controls 10
6. Operating Instructions 12
General Information
Safety
Operating Conditions
Operation
6. Functional Checks 13
7. Warranty 15
8. List of Accessories 15

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Scientech Technologies Pvt. Ltd. 5
Safety Instructions
Read the following safety instructions carefully before operating the instrument. To
avoid any personal injury or damage to the instrument or any product connected to it.
Do not operate the instrument if suspect any damage within.
The instrument should be serviced by qualified personnel only.
For your safety:
Use proper Mains cord : Use only the mains cord designed for this instrument.
Ensure that the mains cord is suitable for your
country.
Ground the Instrument : This instrument is grounded through the protective
earth conductor of the mains cord. To avoid electric
shock the grounding conductor must be connected to
the earth ground. Before making connections to the
input terminals, ensure that the instrument is properly
grounded.
Observe Terminal Ratings : To avoid fire or shock hazards, observe all ratings and
marks on the instrument.
Use only the proper Fuse : Use the fuse type and rating specified for this
instrument.
Use in proper Atmosphere : Please refer to operating conditions given in the
manual.
1. Do not operate in wet / damp conditions.
2. Do not operate in an explosive atmosphere.
3. Keep the product dust free, clean and dry

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Scientech Technologies Pvt. Ltd. 6
Introduction
The Scientech 4077 Multiple Power Supply has been designed as a constant current
(CC) and constant voltage (CV), source for laboratories, industries and field testing
applications, featuring low power loss, compact and lightweight. It provides three
floating independent DC output voltages and is ideally suitable for complex analog
and digital testing.
The DC outputs 0- 30V and 0 ±15V Dual Track, can be continuously adjusted, with
coarse and fine controls. The other DC output 5V also can be adjusted between 4V
and 6V. Current limit is also adjustable for all outputs. Any over loading for adjusted
current limit, is indicated by OR LED. When the maximum setting is crossed or the
overheating has occurred, the OR LED will lit up.
Two displays (one 3-digit display for voltage & other 3-digit for current) are used to
read the instantaneous values. These two displays can be switched simultaneously for
either of the DC outputs. It has low residual ripple and noise, as well as excellent line
and load regulation. The Scientech 4077 Multiple Power Supply is provided with all
protective circuits to ensure trouble free operation

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Features
Three floating, independent DC supply voltages
DC Outputs
A: 0 -30V, 2A
B: 5V, 2 Amps
C: 0 ± 15V (Dual Tracking) /1A each
Constant voltage and constant current operation
Short circuit protection
Digital display for voltage and current
Adjustable current limiter

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Technical Specifications
DC Output : A: 0-30V, 2A
B: 5V (4V to 6V), 2A
C: 0 to ± 15V Dual Tracking, 1A
DC Output A
DC Output : 0-30V, continuous variable by means of coarse & fine
controls
Output Current : 2A (maximum)
Current Limit : Adjustable between 100 mA to 2A
DC Output B
DC Output : 5V, adjustable from 4V – 6V for specific applications.
Output Current : 2A (maximum)
Current Limit : Adjustable between 100mA to 2A
DC Output C
DC Output : 0 to ± 15V, adjustable by means of coarse and fine
controls
Output Current : 1A
Current Limit : Adjustable between 100mA to 1A
Tracking Error : ± (0.1 % + 5mV)
Other Information for all : (30V/2A, 5V/2A, ± 15V/1A)
outputs
Setting Resolution : Voltage: 10mV
Current: 2mA
Internal Resistance : 15m
Stability : 2.5mV
Recovery Time : 50 s
Load & Line Regulation : 0.05%
Temperature Coefficient : 0.05% + 5 mV/C
Ripple & Noise : 1mVrms
Display : 3digits for voltage, 3 digits for current LED indication
for voltage & current
Accuracy : ± (1% rdg + 1 dgt)

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General Information:
Built in over voltage, overload, overheat & short circuit protection.
All outputs are floating.
Insulation:
Between chassis and : > 10 M at 100VDC
output terminal
Between chassis : > 50 M at 500VDC
and AC plug
Power Supply : 230V AC ± 10% 50Hz
Operating Conditions : 0 - 400C; 90% RH
Dimension : W 285 x H 75x D 385 mm
Weight : 5.5 Kgs. (approximately)
(Subject to Change)

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Front Panel Controls
Figure 1
1 Power: Push button switch for supplying power to instrument.
2 A: 0 - 30V (4mm banana terminals): Output terminals for 4mm banana
plugs or cable connection. The output voltages are short circuit protected.
3 B: 5V (4V – 6V) (4mm banana terminals): Output terminals for 4mm
banana plugs or cable connection for 5V output. The output voltages are
short circuit protected.
4 C: 0 - ±15V Dual Tracking (4mm banana terminals): Output terminals
for 4mm.banana plugs or cable connection. 0 to + 15V output is "Master"
and 0 to -15V output is "Slave", which tracks the output voltage of Master.
The output voltages are short circuit protected. .
5 & 17 Coarse (adjusting knob): For the coarse setting of the output voltages at A
& C respectively. Adjustment range: 0-30V and 0 - ±15V respectively.
6 & 18 Fine (adjusting knob): For the fine settings of the output voltage for A & C
output terminals. Adjustment range approximately 2.1V & 1V respectively.
7 & 16 I max (Adjusting knob): For current limit setting of the outputs A & C
respectively. Adjustment range 100mA -2A & 20mA - 1A each.
8 & 14 Digital Display (7-segment LED): 3-digit readout for output voltage & 3
digit readout for output current.