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A gilen t E361x A 60W B ENCH SERIES DC POWER SUPPLIES OPERA TING A N D SER VICE M A NUA L FOR M ODELS: A gilent E361 4A , Serials KR835 03035 and above A gilent E361 5A , Serials KR835 06197 and above.
1-2 SA FETY SUMMARY The following gener al safety precaut i ons must be observed during all phas es of operation, service, and repair of t his instrumen t. Failure to c omply with these precautions or with s pecific warnings elsewhere in this manual violates sa fety standards of design , manufactur e, and intended use of the instrument .
1-3 T able of Contents SAFETY SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4 GENERA L INFORMA TION INTRODUC TION This manual describes all models in the Agilent E 361xA 6 0W Bench Power Supply family and unless stated other wise, the information in this manual applies to all models.
1-5 b e g rounded or the power suppl y can be operated float- in g at up to a maximum of 240 V olts o f f g round. T otal out- put voltage to g round must not exceed 240 Vdc. LINE FUSE Line V oltage Fuse Agilent Part No. 100/ 1 15 V ac 2.0 A T 2 1 10-0702 230 V ac 1.
1-6 T able 1. Specifications and Operati n g Characteristics (Cont’d) *REMOTE PROGRAMMING SPEED Maximum time required for output volta g e to chan g e from initial value to within a tolerance band (0.1%) of the new l y pro g rammed value followin g the onset of a step chan g e in the pro g rammin g input volta g e.
1-7 e . Replace the cover and mark the suppl y clearl y with a ta g or label indicatin g the correct line volta g e and fuse that is in use. Fig ure 2. Line V olta g e Selector (set for 1 15 V ac) Power Cord T o protect operatin g personnel, the instrument should be g rounded.
1-8 that the current limit value can be set from zero to maximum rated value. OPERA TING MODES The settin g of the rear panel switch determines the operatin g modes of the power suppl y .
1-9 REMOTE OPERA TING MODES Remote operatin g modes discussed below are remote volta g e sensin g and remote volta g e pro g rammin g . Y ou can set up the unit for remote operatin g modes b y chan g in g the settin g s of the rear panel switch and connectin g the leads from the rear panel termi- nals to the load or the external volta g e.
1-10 pl y above 100% rated output. Limit y our pro g rammin g volta g e to 10 Vdc. Remote Pro g rammin g Connections. Remote pro g rammin g requires chan g in g settin g s of the switch and connectin g external volta g es to + and - terminals of "CV" or "CC" on the rear panel.
1-11 Settin g V olta g e and Current. T urn the slave unit's CURRENT control full y clockwise. Adjust the master unit's controls to set the desired output volta g e and current. The master suppl y operates in a completel y normal fashion and ma y be set up for either con- stant volta g e or constant current operation as required.
1-12 AUTO-SERIES OPERA TION Auto-series operation permits equal or proportional volta g e sharin g , and allows control of output volta g e from one master unit. The volta g e of the slaves is determined b y the settin g of the front panel VOL T AGE control on the master and volta g e divider resistor .
1-13 Remote Sensin g . T o remote sense with auto-series operation, set SENSE switch of the master unit and set SENSE switch of the slave unit to remote.
1-14 LOAD CONSIDERA TIONS This section provides information on operatin g y our suppl y with various t y pes of loads connected to its output. PULSE LOADING The power suppl y will automaticall y cross over from constant- volta g e to constant current operation in response to an increase (over the preset limit) in the output current.
A-1 SERVICE INFORMA TION Figure A-1. Block D iagram PRINCIPLES OF OPE R A TION (Block Diagram Overview ) Throughout t his discussion, refer t o both the block d i agram of Figure A-1 and t he schemat ic diagrams at the rear of the manual.
A-2 series pass transistors. Whenever the output volta g e is below the slopin g V1 line, the control circuit inhibits four SCRs and the input capacitors char g e to a volta g e determined b y N1. Fi g ure A-2 indicates the windin g s that are connected as a result of the other volta g e decisions.
A-3 a . Perform turn-on checkout procedure g iven in pa g e 1-7. b . Perform the CV and CC Load Re g ulation perfor- mance tests g iven in the followin g para g raphs respectivel y . PERFORMANCE TESTS The followin g para g raphs provide test procedures for verif y- ing the power suppl y 's compliance with the specifications of T able 1.
A-4 CONST ANT VOL T AGE (CV) TESTS CV Setup. For all CV tests set the output current at full rated output to assure CV operation. The onset of constant current can cause a drop in output volta g e, increased ripple, and other performance chan g es not properl y ascribed to the con- stant volta g e operation of the suppl y .
A-5 Fi g ure A-5. Load T ransient Response Time W aveform P ARD(Ripple and Noise) Definition: P ARD is the Periodic and Random Deviation of the dc output volta g e from its avera g e value, over a specified bandwidth and with all other parameters maintained constant.
A-6 a. Connect the test equipment as shown in Fi g ure A-7. b. T urn the suppl y 's power on and turn CURRENT con- trol full y clockwise. c. T urn up output volta g e to the full rated value. Check that the suppl y 's CV indicator remains li g hted.
A-7 e. Record output volta g e across Rs and convert it to current b y dividin g this volta g e b y Rs. f. Adjust autotransformer to the hi g h line volta g e (127 V ac for nominal 1 15 V ac, 1 10 V ac for nominal 100 V ac, and 253 V ac for nominal 230 V ac).
A-8 Ammeter and CC Set Calibration T o calibrate ammeter and CC set, proceed as follows: a. Connect test setup on Fi g ure A-9. b. T urn VOL T AGE and CURRENT control full y clock- wise. c. T urn on the suppl y and to calibrate ammeter adjust R5 on the displa y board until front panel AMPS dis- pla y reads exactl y DVM value divided b y Rs.
A-9 After the trouble has been isolated to one of the feedback loops, troubleshootin g can proceed as described in T ables A- 4, A-5, or A-6. Series Re g ulatin g Feedback Loop. When troubleshootin g the series re g ulatin g loop, it is useful to open the loop since measurements made an y where within a closed loop ma y appear abnormal.
A-10 SYMPTOM CHECKS AND PROBABLE CAUSES Poor Load Re g ulation (Constant V olta g e) a. Refer to "Measurements T echniques" para g raph. b. Check +10 V reference volta g e. c. Ensure that the suppl y is not g oin g into current limit. Poor Load Re g ulation (Constant Current) a.
A-11 STEP ACTION RESPONSE PROBABLE CAUSE 4 Check volta g e from pin 13 to pin 12 of U9. a. Measured volta g e is positive. b. Measured volta g e is ne g ative. a. Check U9A is defective. b. Check U10 and U9D is defective. Check R85 is open. 5 Check volta g e from pin 6 to pin 5 of U9.
A-12 REPL A CEA B LE P A R TS IN TROD UCTI ON This section contains informat ion for ordering replacement parts. T able A-10 lists p arts by reference designators and pro- vides the following inf ormation: a. Reference designat ors. Refer to T able A-8.
Table A -10. Replaceable P arts List Reference Designator Number Q'ty Description Model Mfr. P/N Mfr. Code E3614A 1 60W BENCH POWER SUPPLY - E3614A MODEL E3615A 1 60W BENCH POWER SUPPLY - E3615A .
Table A -10. Replaceable P arts List (Co nt'd) Reference Designator Agilent Part Number Q'ty Description Model Mfr. P/N Mfr. Code C18,21,24,27 0160-7077 4 CAP-FXD .
Table A -10. Replaceable P arts List (Co nt'd) Reference Designator Agilent Part Number Q'ty Description Model Mfr. P/N Mfr. Code R24,26,27,37,38, 64,88,117,120 0757-0442 9 RESISTOR 10K +-1% .125W TF TC=0+-100 ALL 28480 R25,30,33 0698-8824 3 RESISTOR 562K +-1% .
R62 0698-4514 1 RESISTOR 105K +-1% .125W TF TC=0+-100 15 28480 R62 0757-0481 1 RESISTOR 475K +-1% .125W TF TC=0+-100 16 28480 Table A -10. Replaceable P arts List (Co nt'd) Reference Designator Agilent Part Number Q'ty Description Model Mfr.
R109 0698-3153 1 RESISTOR 3.83K +-1% .125W TF TC=0+-100 ALL 28480 R115 0757-0462 1 RESISTOR 75K +-1% .125W TF TC=0+-100 14 28480 Table A -10. Replaceable P arts List (Co nt'd) Reference Designator Agilent Part Number Q'ty Description Model Mfr.
Table A -10. Replaceable P arts List (Co nt'd) Reference Designator Agilent Part Number Q'ty Description Model Mfr. P/N Mfr. Code CR21,22,23,24,25, 26,27,28,29,30 1901-0033 10 DIODE-GEN PRP 180V 200MA DO-35 ALL 1N645 27014 VR1,2,3 1902-0579 3 DIODE-ZNR 5.
Table A-11. Component Val ue Component Model E3614A E3615A E3616A E3617A C2 1000UF 25V +-20% AL-ELECTLT 470UF 50V +-20% AL-ELECTLT 330UF 50V +-20% AL-ELECTLT 220UF 100V +-20% AL-ELECTLT C7,8 39000UF 25V +-20% AL-ELECTLT 12000UF 63V +-20% AL-ELECTLT 5600UF 100V +-20% AL-ELECTLT 2700UF 160V +-20% AL-ELECTLT C11,16,17,25,26 0.
Manual Supple ment Suppleme nt Agilent Part Numbe r : 5959-53 36, Edition 4 Supple ment Print Date : 14 A pril, 2000 This supplement update s th e following docume nt: Agilen t E 361XA 60W Serie s Lab Bench DC Power Supplie s Manual Agile nt Part Nu mber : 5959 -5310 What is a manual suppleme nt? A manual suppleme nt keeps your manual up-to-date .
1-10-1 Voltage and Current Programming of the E3614A/15A/16A/ 17A with a Voltage and Current Source Remote analog voltage programming permits control of the regulated output voltage or current by means of a remotely varied voltage or current. The stability of the programming voltages directly affects the stability of the output.
1-10-2 Programming V oltage Common to the Minus Output Figure 2 Set the CV switch down on the rear panel, and all others up. V in = 1/A x V out V out = A x V in Where V out is the power supply output voltage. V in is the programming voltage. A is the gain factor and the values of each model are as below .
1-10-3 Programming V oltage Common to the Minus Output Figure 4 The output will always be the same or less than the programming voltage. The M/S2 switch must be in the down position.
1-10-4 Constant Current Mode The E3614A/15A/16A/17A may be programmed for constant current with an analog voltage or current. Constant current with analog voltage programming can only be achieved with a voltage source that is common with the positive output terminal.
1-10-5 Figure 6 Set the CC switch down, and all others up. I in = 1/A x I out I out = A x V in Where I out is the power supply output current in amps. I in is the programming current in µ amps. A is the gain. Programming currents can be increased by adding a resistor across the CC+ and CC-.
1-10-6 Voltage and Current Programming of the E3614A/15A/16A/17A with Resistors Remote programming with resistors permits control of the regulated output or current by means of a remotely varied resistor . The sum of the resistance of external programming resistors (R1 + R2) should be more than 40 kohm.
1-10-7 Remote Resistor Programming, Constant Current Figure 8 Set the CC switch down on the rear panel, and all others up. I out = A x [V REF x {R/(R + R2 + 100)}] Where I out is the power supply output current. A is the gain factor and the values of each model are as below .
CERTIFICATION Agilent T echno l ogies certifies that this product met its pub li shed specificat i ons at t i me of shipmen t fro m t he fa ctory . Agilent T ech nologies furthe r certifies that its c.
DECLA RA TION OF CONFORMITY accordi ng to ISO/IEC Guide 22 an d EN 45014 Manufactu rer’s Name: Agilent Tec hnologies, Inc. Manufactu rer’s A ddress : 345-15, Ka san-dong, Kumch on-ku, Seoul 15 3-0.
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