Supply : 220V EU Plug /AU 220V Plug / 110V US Plug DPS-305BF 30V 5A DC Digital Control Laboratory Adjustable Power Supply for Laptop Repair
DPS series digital input adjustable DC power supply is designed for laboratory， school， production lines and electronic repair designed for use. Voltage stability is high， small ripple factor， has improved the short circuit protection and overcurrent protection.
Due to the voltage value is a digital keyboard input， shorten the voltage setting time， completely overcome the traditional potentiometer adjustment poor contact caused by voltage instability phenomenon. The internal power supply containing electronic switch， can conveniently open the output load.
DPS305BM/BF have the same function， but different current precision. DPS305CM/CF have the same function， but different current precision. DPS305CM/CF have BM/BF all functions， in addition they have the storage and combination lock function.
DPS - 305 BM/CM : Four digit current display measuring accuracy : 0000-0.450A ， ±0.001 A 0.450-5 A ， ±0.01 A DPS - 305 BF/CF : Five digit current display measuring accuracy : 00000-0.0450A， ±0.0001A 0.0450-0.450A， ± 0.001A 0.450-5 A， ±0.01 A
DPS-305BM in SKU144061DPS-305BF in SKU144068
DPS-305CM in SKU144065DPS-305CF in SKU144070
Specification :
1， rated working conditions and dimensions Power supply voltage 220V + 10%50 / 60Hz Working conditions : 0-40 temperature relative humidity 80% Storage temperature : - 10-70 C 70% relative humidity Dimensions : 265 x 128 x 150mm ( D * W * H )
2， regulated state parameters The voltage output from 0 to 30V can be continuously adjusted ( to distinguish the value of 0.1V ) The precision of output voltage : + 0.1V Voltage stability : < 0.01%+3mv Load stability : < 0.01%+3mv Recovery time : 100uS Ripple noise voltage : < 1mVRMS ( 5Hz-1MHz ) Temperature coefficient : < 300PPM / C
3， a constant current state parameters Constant current value : 305 CM 5A Ma constant current maximum 500 mA 303CM 3A Ma constant current maximum 500 mA Constant current output current from 0 to the nominal value of continuous adjustable ( to distinguish the value of 0.01A ) Constant current output accuracy : + 0.01A ( MA constant current precision : + 1mA) The current stability of the < 0.1%+3mA Load stability < 0.1%+3mA Ripple noise current < 3mARMS
4， current and voltage display accuracy Voltage display accuracy : + 0.1V ( constant current state ) Current display accuracy : + 0.01A ( constant pressure ) Ma current display accuracy : + 1mA ( constant pressure )
5， storage capacity Storage and call ten current， voltage data ( 305 / CM ) Initial has been deposited in the data : 1 keys ( 3V ) 2 ( 5V ) button button 3 ( 9V ) 4 ( 12V ) 5 button button button ( 13.8V ) 6 ( 15V ) 7 ( 18V ) 8 button button button ( 19V ) 9 ( 20V ) 0 ( 24V ) current key value is 5A， the user can arbitrarily settings change the desired voltage and current.
6， a voltage step range 10V / 1V / 0.1V lifting voltage step Three panel features In 1， the front panel Current display window Voltage display window Data entry keyboard ( double function keys are : 0 / mA decimal point / latch / ENT / password 4 / stepper 7 / 8 / 9 step step / step / step 2 / 1 step 3 / step ) Constant voltage / ENT indicating lamp Constant current lamp Output indicator Ma status indicator Power switch Output ports : " -" negative polarity ( black ) GND : ground earthing terminal ( green ) Output ports : " +" the positive ( red )
Using notes :
1， the initial state power :
Power every time when energized， the first display888-888digital tube display models， and then， on the display a setting voltage and current values， and finally into the working state and output.
2， the value of the input voltage
A step input 123456keys are 10V / 1V / 0.1V step lifting key， in order to prevent misoperation damage load， lift the 10V must also press 4 and7 or4 and1to lift. B key input Column : the need for13.8V output voltage According to the voltage V respectively by 138press ENT key to finish last. Column : the need for9V output voltage According to the voltage V by 9followed by the ENT key is complete. Column : need to output 4.5V According to the voltage V by 4.5Finally， press the ENT key is complete. According to the voltage V respectively by 04.5Finally， press the ENT key and a result is the same as above. A word with the most complex and the most simple input method the results are the same. Prompt.
Voltage input data is greater than 300and greater than 30V， instruments do not accept input， return not set before the voltage value. When the keyboard input data do not meet the requirements or input the wrong data， need to be removed to input new data in time， press the V key， so just input voltage data delete disappeared， can enter again. If this time to withdraw from the voltage setting state， only need to press the ENT key is returned ( and to exit the voltage input must press the V button， press ENT key to exit in return ).
Voltage display window a bit word flashing， then power waiting for input the data bits. V / ENT input confirmation light flashes， indicating apparatus in waits for the user to press the ENT button to confirm.
3， the value of the input current
Input current value is automatically transferred to the state apparatus constant current constant current value， when the load current is equal to and greater than the constant current value， the power from the voltage state into the automatic constant current state， current limitations in the set value to output， not cut load.
Column : the need for1.38A output current According to the current I respectively by 1.38finally， press the ENT key is complete. Column : the need for5A output current According to the current I directly by5followed by the ENT key is complete. Column : the need for0.5A output current According to the current I directly press.5finally press the ENT key is complete. According to the current I respectively by 0.5Finally， press the ENT key and a result is the same as above. A word with the most complex and the most simple input method the results are the same.
Prompt.
Voltage input data is greater than500(303BM / CM data to a maximum of 300，3A ) and greater than or equal to 0.00A5A， instruments do not accept input， return not set the current value before. When you press the I key， current display window to display a current input value， when the power input and the confirmation input RMS， apparatus to display the value of the input current， in returning to display the actual current measurement. When the keyboard input data do not meet the requirements or input the wrong data， need to be removed to input new data，
In the time of pressing the I key， the input data is removed away， can enter again. If this time to exit the current settings， only need to press the ENT key is returned ( and to exit the current input mode must press the I button， press ENT button to exit in return ). When you press the I key， the instrument stop voltage output， only the ENT button is pressed， to output voltage. Current display window a bit word flashing， then input the current data. ENT or V / ENT input confirmation indicating lamp glitters， indicating apparatus for pressing the ENT key
4， constant current and voltage characteristics
When the output current reaches a predetermined input constant flow and constant value， automatically from the constant voltage state into the constant current state， but along with the load current is lower than the set value， automatically from the constant current constant voltage state returned to the state. In the front panel of the indicating lamp V lights in a state of constant pressure， the front panel of the indicating lamp is bright in the I constant current state.
Column : for battery charging /12V DC power， the power output is set to 13.8V， the constant current value is set to1A， while the power supply output access storage battery，1A battery constant current charging， when the charging is finished， do not need constant current 1A charge， while the power supply for battery voltage13.8V trickle supplement.
5， power two current protection state operation
Power electricity per will automatically default to constant current CC protection status， current setting value is constant current protection current value.
OCP overcurrent automatic cut-off state of access methods :
First press the4keys do not loosen state， press I button， CC indicator lights up， enter the OCP overcurrent automatic cut-off state， and the state in the OCP， CV lights and CC lights is bright at the same time， before the input or preservation of the constant current value is automatically converted to COP automatically stops the output current value.
When the load current value equal to or greater than the OCP flow value， it will automatically stop output power， current and voltage display for 000-000， OUT lights at the same time out. Need to output voltage， simply press the OUT button， OUT lights， power supply is automatically the output voltage value.
Special note : when power is shut down after a reboot， OCP will automatically disappear， enter the CC constant current state.
6， keyboard password lock (303 / 305CM )
In a separate press ENT three banknote， V / ENT indicator light will flash， waiting to enter the password， the power to stop the output， if press the 258button three， ENT or V / ENT instructions exhibit of lanterns to slow blink， explain the password has been entered correctly， at the same time the output voltage. Such a state of V I 0. The key is lost， cannot change the voltage / current / storage / call / MA data. Password lift : repeat the above process after the first， on the restoration of V I 0key functions.
Prompt.
This code is available only to authorized users.
If you press the ENT three banknote， ENT lights flash quickly for several seconds， no password or password is not correct， then the apparatus automatically returned to the prior state.
7， the output switching function
When the instrument is OUT indicator light， press the OUT key， while the power supply stop output. When the instrument is OUT indicating lamp is extinguished， press the OUT key and in the release， while the power supply is output， while OUT indicator light.
8， storage / call (303 / 305CM )
A storage :
To set up the required storage V， I value， in a separate press. ( decimal ) button for 3 seconds and then， V / ENT lamp flashes slowly， power into the storage state， then slow flashing5 seconds， if press0 to9number keys， then current， voltage data is stored in the keys ( such as1， depositing a1keys ). At the same time， V / ENT lights flashing， and enters into the working state.
If the slow flashing 5seconds without press 0to 9keys， then from the stored state and back to work.
B quick call :
Separate quick click. ( decimal ) key， V / ENT lamp flashes， power into the out of state， in the rapid flashing3 seconds， if press0 to9 number keys， power supply is automatically removed existed before0 to9keys in the current and voltage data， and display and output.
If the flash quickly for 3seconds without press 0to 9keys， then from out of state and back to work.
9， the current A / mA conversion
Initial electrifying current A or constant current A display， maximum output current of 3A or5A， when the separate press 0keys，3 seconds later， the mA indicator light， current decimal point out， power into the output state， the current display or a constant current value is Ma units， the maximum output current of 0.5A.
If the power needed to return to the A state， Shun again separate press 0keys，3 seconds later， the mA indicator is extinguished， it returns a A state.
Prompt.
303BM / CM constant current value is set to300 Ma， from Ann to Ma，500 mA constant current value automatically，
At this point you can measure the maximum current of 500mA， a constant current is500 ma. And 303BM / CM Ma state， Ma setting range is 0 -300 Ma500 mA and fixed. While 305BM / CM Ma setting range is 0 -500 ma.
10， the increase of cooling fan
This machine is no fan design， support for the full power output， for24 hours or longer continuous full power output， can be added to reduce the temperature in the machine fan.
Method : the machine installation in power supply board reserved fan interface CJ11(Vcc is positive) and a fan fixing hole， a user only needs to add model 802524V voltage for DC fan.
Attention :
1， the input voltage selection : the input AC voltage should be 220V + 10%50Hz.
2， the ground : three core power line to the protective earth terminal earth must be reliable access security， to ensure that users and peripheral equipment safety.
3， insurance tube replacement : when the power supply after pressing the power switch， panel lights and digital tube are all bright， there may be
Insurance tube burn， if confirmation is insurance tube burn， will have to find the insurance tube burn causes and elimination， substitution of the same specifications
Insurance tube. Remember， replacement of the fuse tube must pull the power plug from the socket removed， can be replaced.
4， placing : to ensure the power of life， being used for a long time， please keep power placed in well-ventilated environment make (23 degrees C. do not put in the environment temperature is higher than 40 DEG C place， radiator is located on the instrument's rear， should leave enough space
， to facilitate heat dissipation. Not a long time， should be the power supply plug.
5， abnormal operation : the power supply mode of operation and non operation will not cause the power damage， but has the potential to damage the load ( when the output voltage exceeds the load voltage ).
Package included :
1 x DPS-305BF 30V 5A DC Digital Control Power Supply
