HP 6209B Operating & Service Manual Download Page 18 | Manualshive

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Summary of Contents for 6209B

Page 1: ... effort to help you support your product This manual provides the best information we could find It may be incomplete or contain dated information and the scan quality may not be ideal If we find a better copy in the future we will add it to the Agilent website Support for Your Product Agilent no longer sells or supports this product You will find any other available product information on the Agi...

Page 2: ... I IT llJH11J1 r DC Power Supply Lab Series Model6209B ...

Page 3: ...OTS LIBRARY ...

Page 4: ...ge to HP PIN 1901 0330 Add C26 fxd elect 20uf 75 10j 16VDC HP PIN 0180 0300 CHANGE 2 In the replaceable parts table change power transformer T1 to HP P N 5080 7183 CHANGE 3 The Serial Prefix ot this unit has been changed to 1147A This is the only change CHANGE 4 The standard colors for this instrument are now mint gray for front panel and olive gray for all other external surfaces Option X95 desig...

Page 5: ...ominal output voltage following a load change from full load to half load or vice versa Also change the last line of para graph 5 28 to read which is 50 mA Figure 5 6 must also be corrected as shown on next page ERRATA The front panel binding posts have been changed to a type with better designed in sulation Delete the two types of posts list ed on page 6 8 of the parts list and add black binding ...

Page 6: ...n the schematic change R16 to var ww 20 k ten turn HP P N 2100 1867 qty 1 Also delete Xnob BP P N 0370 0101 and Knob HP P N 0370 0179 Add Knob round HP P N 0370 0137 qty 1 This change eliminates Option 009 be Cause Option 009 is now standard equipment CHANGE 12 In the replaceable parts list change R19 to 1 M ohm 1 1 8 W HP P N 0757 0344 and VR2 to 6 2 V HP P N 1902 0509 CHANGE 13 In the replaceabl...

Page 7: ...07 10 Meg 51 CC HP P N 0686 1065 R107 is mechanically in stalled on pins in the location of C27 and electrically is parallel to C27 C27 is removed and placed on the pins below R107 ERRATA In the replaceable parts list change the part number for CR35 from HP P N 1884 0302 to HP P N 1884 0338 qty 1 ...

Page 8: ...TING AND SERVICE MANUAL FOR SERIAI S 7Flll7 up For Serials Above 7Flll7 Check for inclusion of change page For Serials Below 7Fll l 7 Refer to Appendix A 100 Locust Avenue Berkeley Heights New Jersey 07922 HP Part No 06209 90003 Printed June 1969 ...

Page 9: ... 3 2 3 3 3 3 3 4 3 5 3 6 3 6 3 6 3 7 3 7 3 7 IV PRINCIPLES OF OPERATION 4 1 Overall Block Diagram Discussion 4 1 4 1 11 Section Page No IV PRINCIPLES OF OPERATION Continued v 4 13 Detailed Circuit Analysis 4 2 4 14 Preregulator and Control Circui 4 2 4 20 Turn On Control Circuit 4 4 4 24 Series Regulator 4 4 4 26 Constant Voltage Com parator Circuit 4 4 4 32 Constant Current Com parator Circuit 4 ...

Page 10: ...t Voltage 3 2 Remote Voltage Programming Constant Voltage 3 3 Remote Resistance Programming Constant Current 3 3 Remote Voltage Programming Constant Current 3 3 Remote Sensing 3 4 Normal Series 3 4 Auto Serles Two and Three Units 3 5 Normal Parallel 3 5 Auto Parallel Two and Three Units 3 6 Auto Tracking Two and Three Units 3 6 Overall Block Diagram 4 1 Operating Locus of a CV CC Power Supply 4 2 ...

Page 11: ...and internal adjustments must be made by qualified service personnel Do not replace com ponents with power cable connected Under certain condi tions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components DO NOT SERVICE OR ADJUST ALONE Do not attempt internal service o...

Page 12: ...uto Series Operation Power supplies may be used in series when a higher out put voltage is required in the voltage mode of oper ation or when greater voltage compliance is required in the constant current mode of operation Auto Series operation pennits one knob control of the total output voltage from a master supply d Parallel and Auto Parallel Operation The power supply may be operated in parall...

Page 13: ... year and the letter A through L designates the month January through December respectively 1 2 with I omitted The third part is the power supply sertal number 1 14 If the serial number prefix on your power sup ply does not agree with the prefJx on the title page of this manual change sheets are included to up date the manual Where applicable backdating information is given in an appendix at the r...

Page 14: ...PROTECTION A continuously acting constant current circuit protects the power supply for all overloads in 1 3 eluding a direct short placed across the termi nals in constant voltage operation The con stant voltage circuit limits the output voltage in the constant current mode of operation METER The front panel meter can be used as either a 0 400 or 0 40 Volt voltmeter or as a 0 0 12 or 0 012 Amp am...

Page 15: ...ent is air cooled Sufficient space should be allotted so that a free flow of cool ing air can reach the sides and rear of the instru ment when it is in operation It should be used in an area where the ambient temperature does not ex ceed sooc 2 11 OUTLINE DIAGRAM 2 12 Figure 2 1 is a diagram showing the outline dimensions of this unit 2 13 RACK MOUNTING 2 14 This instrument may be rack mounted in ...

Page 16: ...unting Two Units SPACING PANEL g 0 CJ MA RI DC POWtA SUPPL f c HmETT o g 0 METER CURRENT VOLTAllE YO TI 0 COUSE fl INE g Q O F 8 C Nll fl J Q g Figure 2 3 Rack Mounting One Unit c Slide combining strips between front panel and case of unit 2 2 d Bolt angle brackets to front sides of case and replace front panel screws ...

Page 17: ... in Figure 2 4 and are labeled on copper side of printed circuitboard and on schematic c Add strap between SO and 55 d Replace existing fuse with 1 Ampere 230 Volt fuse Return unit to case and operate normally 2 21 POWER CABLE 2 22 To protect operating personnel the National Electrical Manufacturers Association NEMA recom mends that the instrument panel and cabinet be grounded This instrument is e...

Page 18: ... the various operational capabilities of the 3 1 power supply A more theoritical description con cerning the operational features of this supply is contained in Application Note 90 and in various Tech Letters Copies of these can be obtained from your local Hewlett Packard field office 3 5 NORMAL OPERATING MODE 3 6 The power supply is normally shipped with its rear terminal strapping connections ar...

Page 19: ...ained above its nominal value the supply will probably operate within the specifications above the rated output 3 16 OPTIONAL OPERATING MODES 3 17 REMOTE PROGRAMMING CONSTANT VOLTAGE 3 18 The constant voltage output of the power sup ply can be programmed contr olled from a remote location if required Either a resistance or voltage 3 2 source can be used for the programming device The Wires con neC...

Page 20: ...e of switch should be used since the output current will exceed the maximum rating of the power supply if the switch contacts open during t t hing interval 1CAUTI011tN If the programming terminals Al and A4 should apen at any time during this mode the output current will rise to a value that may damage the power sup ply and or the load To avoid this pos sibility connect a lSK resistor across the p...

Page 21: ... power supply and placed across the load tenni nals 3 35 Although the strapping patterns shown in Figures 3 3 through 3 6 employ local sensing note that it is possible to operate a power supply simul taneously in the remote sensing and Constant Volt age Constant Current remote programming modes 3 _35 SERIES OPERATION 3 3 7 Nonnal Series Connections Figure 3 8 Two or more power supplies can be oper...

Page 22: ...taneously in both supplies than to a change in either supply alone 3 41 PARALLEL OPERATION 3 42 Normal Parallel Connections Figure 3 10 Two or more power supplies can be connected in parallel to obtain a total output current greater than that available from one power supply The total output current is the sum of the output currents of the individual power supplies The output CURRENT controls of ea...

Page 23: ... voltage of the slave is a percent age of the master s output voltage and is deter mtnect by the voltage divider eonsisting of Rx or x 3 6 00 00 Ry 00 GNO S AIO SLAVE NO I LOAD SLAVEN0 2 Figure 3 12 Auto Tracking Two and Three Units and Ry and the voltage control of the slave supply Rp where Es EM Rp Rx Rp Tum on and turn off of the power supplies is controlled by the master Remote sensing and pro...

Page 24: ...very time of the output voltage is longer for load resistance changes c A large surge current causing a high pow 3 7 er dissipation in the load occurs when the load re sistance is reduced rapidly 3 53 REVERSE VOLTAGE LOADING 3 54 A diode CR34 is connected across the output terminals Under normal operating conditions the diode is reverse biased anode connected to nega tive terminal If a reverse vol...

Page 25: ...firing pulse to the SCR once during each half cycle of the input ac The control circuit continuously samples the output voltage the input line voltage from T3 and the voltage across the series regulator and on the basis of these inputs determines at what time each fll ing pulse is generated 4 1 4 4 The phase adjusted output of the SCR is ap plied to the series regulator which varies its con ductio...

Page 26: ... by further increases in lOUT with no change in the output voltage until the output current reaches Is a value equal to the front pa nel current control setting At this point the supply automatically changes its mode of oper ation and becomes a constant current source still further decreases in the value of load resistance are accompanied by a drop in the supply output voltage with no accompanying...

Page 27: ... 1 r TP67 16V OUTPUT 019 __l ov I I I I ll 1 r TP68 l T2 l I I 12V Fl RING PULSE I I _i TP6 5 RESET NOTES ov IOuSEC I 1 I I I_____ ov 1 ALL WAVEFORMS TAKEN AT MAXIMUM RATED OUTPUT VOLTAGE WITH NO LOAD CONNECTED 2 SCOPE DC COUPLED ANO REFERENCED TO INBOARD SIDE OF CURRENT SAMPLING RESISTOR EXCEPT FOR FIRING PULSE 3 FOR CLARITY WAVEFORMS ARE NOT DRAWN TO SCALE Figure 4 4 Preregulator Control Circuit...

Page 28: ...voltages due to mis matched stages Moreover drift due to thermal differentials is minimized since both transistors operate at essentially the same temperature 4 28 The constant voltage comparator circuit con tinuously compares a fixed reference voltage with a portion of the output voltage and if a difference exists produces an error voltage whose amplitude and phase is proportional to the differen...

Page 29: ...y interpreted as a load change by the current comparator circuit The clamp circuit eliminates this undesirable effect 4 5 by maintaining the constant voltage programming current constant 4 39 The voltage divider RSL R52 and VRS back biases CR30 and QlO during constant voltage opera tion When the power supply goes into constant cur rent operation CR30 becomes forward biased by the collector voltage...

Page 30: ... applicable voltage divider while stage Ql3 is connected to the S terminal The differential output of the amplifier is taken from the collectors of Ql2 and Ql4 Transistor QlS is a constant cur rent source which sets up the proper bias current for the amplifier Potentiometer R63 permits zero ing of the meter The meter amplifier stage con tains an inherent current limiting feature which protects the...

Page 31: ...TION FEATURES 4 54 The supply has several special purpose components which protect the supply in the event 4 7 of unusual circumstances One of these components is CR34 which is connected across the output ter minals of the supply and prevents internal damage from reverse voltage that might be applied across the supply This could occur for example during Auto Series operation if one supply were tur...

Page 32: ...pment Required TYPE REQUIRED USE RECOMMENDED CHARACTERISTICS MODEL Differential Sensitivity lmVfull s cale min Measure de voltages 3420 V ltmeter Input impedance 10 megohms calibration procedures See Note min Variable Range 90 130 Volts Equipped Vary ac input Voltage with voltmeter accurate within l V Transformer AC Voltmeter Accuracy 2 Sensitivity lmV Measure ac voltages and 403B full scale defle...

Page 33: ... an electronic null detector in which one input terminal is grounded to avoid ground loops and circulating currents 5 5 PERFORMANCE TEST 5 6 The following test canbe used as an incoming inspection check and appropriate portions of the test can be repeated either to check the operation of the instrument after repaks or for periodic main tenance tests The tests are performed using a 115 Vac 60Hz sin...

Page 34: ...ndicated on dif ferential voltmeter f Disconnect load resistors g Reading on differential voltmeter should not vary from reading recorded in step e by more than the following Model No Variation mVdc 62078 l 34 G209B i 66 5 3 POWER SUPPLY UNDER TEST DIFFERENTIAL VOLTMETER Figure 5 3 Load R gulation Constant Voltage 5 13 Line Regulation Definition The change L EouT in the static value of de output v...

Page 35: ...in potential EG between the two ground points causes an IR drop which is in series with the scope input This IR drop normally having a 60Hz line frequency fundamental plus any pickup on the un shielded leads interconnecting the power supply and scope appears on the face of the CRT The magnitude of this resulting noise signal can easily be much greater than th true ripple developed be tween the plu...

Page 36: ...quate Measuring noise with an instrument that has insufficient bandwidth may conceal high fre quency spikes detrimental to the load 5 26 The test setups illustrated in Figures 5 4A and 5 48 are generally not acceptable for measuring spikes a differential oscilloscope is necessary Furthermore the measurement concept of Figure S 4C must be modified if accurate spike measure ment is to be achieved 5 ...

Page 37: ...f the transient recovery characteristic on an oscill s pe more difficult 5 31 To check the transient recovery time pro ceed as foilows a Connect test setup showp in Figure 5 6 b Turn CURRENT ctintrols fblly clockwise c TUrn on supply and adjusf voltage con trols until front panel ammeter indicates exactly 5 Amperes d Close the line switch on the repetitive load switch setup e Set the oscilloscope ...

Page 38: ...l 6209B from indication recorded in Step d 5 7 5 38 Output Stability Definition The change in output voltage for the first eight hours following a 30 minute wann up period During the inter val of measurement all parameters such as load resistance ambient temperature and input line voltage are held constant 5 39 This measurement is made by monitoring the output of the power supply on a differential...

Page 39: ...rent result ing from a change in ac input voltage over the specified range from low line 10 below nominal to high line 10 above nominal or from high line to low line 5 48 To check the line regulation proceed as fol lows a Utilize test setup shown in Figure 5 10 leaving switch Sl open throughout test b Connect variable auto transformer between input power source and power supply power input c Adjus...

Page 40: ...attempting to troubleshoot the unit in detail Once the principles of operation are understood refer to the overall troubleshooting procedures in Paragraph 5 57 to locate the symptom and probable cause 5 55 The schematic diagram at the rear of the manual Figure 7 1 contains normal voltage read ings taken at various points within the circuits These voltages are positioned adjacent to the appli cable...

Page 41: ...as little or no effect then the trouble is probably in the series regulator feedback loop Refer to Table 5 4 _ htgh outPut or Table 5 5 uow output 5 63 After the trouble has b een isolated to one of the feedback loops troubleshooting can proceed as described in Tables 5 4 S 5 or 5 6 After both loops are operating in a satisfactory manner the eictemal power supply should be removed and the SCR gate...

Page 42: ...t adjustment Paragraph 5 8 3 Poor Load Regulation a Measurement technique Paragraph 5 11 Constant Voltage b Check reference circuit Paragraph 5 59 VRl c Ensure that supply is not going into current limit Check constant current input circuit Poor Load Regulation a Check reference circuit Paragraph 5 59 VR2 and adjust Constant Current ment Paragraph S 83 b Cl9 C20 and CR34 leaky c Check clamp circui...

Page 43: ...ead of QlA Check for open strap be tween A6 and AS Check RIO for open Table 5 5 Low Output Voltage Troubleshooting STEP ACTION RESPONSE PROBABLE CAUSE 1 Check turn on of Q6 by a Output voltage remains low a Q6 open disconnecting emitter b Output voltage increases b Reconnect emitter lead of Q4 and proceed to Step 2 2 Check turn off of Q4 by a Output voltage remains low a Q4 shorted Ql7 open shorti...

Page 44: ...Waveform between TP23 and TP64 a Amplitude incorrect a RlOO RlOl C23 defeo tive b Period incorrect b CR9 CR12 defective 5 67 REPAIR AND REPLACEMENT 5 68 Before servicing a printed wiring board refer to Section VI of this manual which contain s a list of replaceable parts Before replacing a semicon ductor device refer to Table 5 7 which lists the special characteristics of selected semiconductors I...

Page 45: ...tion R26 QlO Clamp circuit CC load regulation Qll 15 Meter circuit Meter zero Valtmeter I a eter tracking R63 R7Z R5 6 R38 Ql8 Ql9 SCR control amplifiers Voltage across Q6 R99 CR1 CR2 Limiting diodes av load regulation 5 69 ADJUSTMENT ANI CALIBRATION 5 70 Adjustment and calibration may be required after performance testing troubleshooting or re pair and replacement Perform only those adjust ments ...

Page 46: ... 1 48K resistor 96K for Model 6209B between terminals s and A6 on rear barrier strip b Disconnect jumper between A7 and AB Ueaving A6 and A7 jumpered on rear terminal bar rier strip c Connect a decade resistance in place of R13 d Connect a differential voltmeter between S and s and tum on supply e Adjust decade resistance box so that dif ferential voltmeter indicates maximum rated output voltage w...

Page 47: ...NT RESPONSE 5 86 To adjust the transient response proceed as follows a Connect test setup shown in Figure 5 6 b Repeat Steps a through e as outlined in Paragraph 5 31 c Adjust R3 0 so that the transient response is as shown in Figure 5 7 5 87 PREREGULATOR TAACKING 5 88 To adjust the prereC Ulator proceed as fol lows a Connect decade resistanceinplaceof R99 b Turn on supply and adjust VOLTAGE con t...

Page 48: ...special modification Ol numbers of the instrument Hewlett Packard part number circuit reference des ignator and description To order a part not listed in Table 6 4 give a complete description of the part its function and its location Table 6 1 Reference Designators A assembly E miscellaneous B blower fan electronic part c capacitor F fuse CB circuit breaker J jack jumper CR diode K relay DS device...

Page 49: ...137 Transistor Electronics Corp Minneapolis Minn CODE NO MANUFACTURER ADDRESS 07138 Westinghouse Electric Corp Electronic Tube Div Elmira N Y 07263 Fairchild Camera and Instrument 07387 07397 07716 07910 07933 08484 08530 08717 08730 08806 08863 08919 09021 09182 09213 09214 09353 09922 11115 11236 11237 11502 11711 12136 12615 12617 12697 13103 14493 14655 14936 15801 16299 Corp Semiconductor Div...

Page 50: ...MC Corp Thomas and Betts Co Union Carbide Corp Homer City Pa Philadelphia Pa New York N Y Ward Leonard Electric Co Mt Vernon N Y Use Code 71785 assigned to Cinch Mfg Co Chicago Ill 6 3 CODE NO 70563 70901 70903 71218 71279 71400 71450 71468 71590 71700 71707 71744 71785 71984 72136 72619 72699 72765 72962 72982 73096 73138 MANUFACTURER ADDRESS Amperite Co Inc Union City N J Beemer Engrg Co Fort Wa...

Page 51: ...ngfield N J Bendix Corp Electric Power Div Eatontown N J Herman H Smith Inc Brooklyn N Y Central Screw Co Chicago Ill Gavitt Wire and Cable Div of Amerace Esna Corp Brookfield Mass 6 4 CODE NO 83508 83594 83835 83877 84171 84411 86684 86838 87034 87216 87585 87929 88140 88245 90634 90763 91345 91418 91506 91637 91662 91929 92825 93332 93410 94144 94154 94222 95263 95354 95712 95987 96791 97464 977...

Page 52: ...PN Diff Amp Si SS PNP Si NOT ASSIGNED Power NPN SS PNP Si SS NPN Si SS PNP Si SS NPN Si SS PNP Si SS NPN Si SS PNP Si SS NPN Si TQ l l 2 2 2 1 l 1 1 1 1 1 1 2 3 18 1 2 4 4 1 1 1 1 1 1 7 1 6 62098 6 5 MFR PART NO 220P47494B 663 UW 192Pl0392 192P22292 30D206G015BB4 192P22292 l 50D475X903852 192Pl0492 192Pl0392 118Pl050453 150Dl05X903SA2 1N5060 1N4830 1N4828 1N5059 1N3256 1N5060 1N5060 2N4102 599 124...

Page 53: ...3Kn 1 1 iW fxd met film 750 n 1 1 l 8W var ww SKn fxd met film 12Kn 1 l 8W TQ 2 2 2 5 2 l 2 1 1 3 l 1 1 1 2 1 2 l 1 1 2 l l 1 1 1 1 1 1 1 1 l 5 1 1 1 2 2 1 1 1 2 6209B 6 6 MFR PART NO MFR RS CODE PART NO 242E2025 S6289 0811 1806 1 Type CEA T 0 07716 0698 5087 1 Type CEA T 0 07716 07S7 0449 1 Type CEA T 0 07716 07S7 0427 l EB 3645 01121 0686 3645 l EB 4345 01121 0686 4345 1 EB S645 01121 0686 5645 ...

Page 54: ...ip Cover Blank Panel Front Knob Black with Pointer Knob Red TQ 2 2 1 1 1 l l 1 1 1 l 1 1 1 1 1 2 1 1 l l 1 l 1 1 1 1 1 1 1 1 1 2 1 1 2 2 1 1 2 1 1 1 6209B 6 7 MFR PART Nu Type CEB T 0 Type CEB T 0 Type CEA T 0 Type 110 F4 Type CEA T 0 Type CEA T 0 Type CEA T 0 Type CEA T 0 EB 3335 Type 5XM EB 3355 EB 1625 242E2R05 Type CEA T 0 Type CEA T 0 242E3025 GB 1525 Type BWH GB 6225 EB 3935 EB 4335 EB 1035 ...

Page 55: ...sulator Q6 Rubber Bumper Feet TQ l l l 4 l l 2 l l l 3 1 8 l l l 1 1 3 l 2 2 4 62098 6 8 MFR PART NO DF21Mn DF21BC Cl7373 012 248 SR 5P 1 T4 4 KH 4096 422 13 11 013 342014 4072 734 MB50 MFR RS CODE PART NO 09182 0370 0084 l 09182 0370 0137 l 09182 1120 1233 l 09182 1460 0720 09182 4040 0295 l 58474 1510 0040 l 58474 1510 0039 l 89032 0510 0123 l 09182 0360 1234 l 28520 0400 0013 l 79307 1400 0330 ...

Page 56: ... Component Location Diagram Figure 7 1 which shows the physical location and refer ence designator of parts ounted on the printed 7 1 wiring board b Schematic Diagram Figure 7 2 which illustrates the circuitzy for the entire power sup ply Voltages are given adjacent to test points identified by encircled numbers on the schematic and printed wiring board ...

Page 57: ...TPUT l 4 2V 10 u SEC f W _ OV i 8 33MSEC TEST POINTS 68 T2 4l TEST POINTS 65 S L ALL WAVEFORMS TAKEN WITH 115VAC 60Hz SINGLE PHASE INPUT AT MAXIMUM RATED OUTPUT VOLTAGE WITH NO LOAD CONNECTED EXCEPT 8 AND C INDICATED WAVEFORM AMPLITUDES ARE TYPICAL 10 2 OSCILLOSCOPE DC COUPLED AND REFERENCED TO TEST POINT 23 UNLESS OTHERWISE INDICATED 3 FOR CLARITY WAVEFORMS ARE NOT DRAWN TO SCALE I V ...

Page 58: ...hange to nominal value 12M A B Part No 0686 1235 CHANGE 2 In replaceable parts list and on schematic make the following changes Cl Change to lµf 450V Part No 0180 1845 CHANGE 3 In replaceable parts list and on schematic make A 1 the following changes VR6 Delete R40 Add 900 n 1 l 8W Part No 0757 1099 Connect R40 in place of VR6 CHANGE 4 In replaceable parts list and on schematic make the following ...

Page 59: ...Order Part Number 06209 90003 E0669 U0589 Printed in USA F 09 HEWLETT a GilPACKARD Manufacturing Part Number 06209 90003 Illllll lllll lllll lllll lllll llll 1111111111111111111111111111111111 ...

Page 60: ...V R TO CONTROL METER s I l TEN TURN CIRCUIT l I RSI 100 5W I SCR CONTROL 3V 43V RS9 220 2W fa R9b 6 2K IW RB7 3K 3W CRl4 CRl3 RICO 330 IW RIO 22 C22 l 35V SUMMING CRl5 CAPACITOR 66 C23 5 65V 16V R96 R91 39K R92 43K R93 OK C24 5 65V A RS2 3 3ME0 CRl6 R991 llK PRE REG TRACKING ADJ FROM TURN ON CONTROL 3 9K R 02 100 ft l I 1 I I I I I I I I I I I I I I I VOLTAGE INPUT J CURRENT INPUT s FCFRONTl s 6 A...

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