Hagerman Audio Labs VACUTRACE, Manual

Page 1: ...VACUTRACE Vacuum Tube Curve Tracer Made in USA...

Page 2: ...tation charges prepaid to Hagerman Audio Labs This warranty does not apply if the product has been damaged by negligence accident abuse or misuse or misapplication has been damaged because it has been...

Page 3: ...utput conductance 1 rp Specifications Item Specification Plate Voltage 0V to 380V 200mA Cathode Current 0mA to 100mA 200mA in 2A mode Grid Step Sizes 0 5V 1V 2V 5V 10V 8 steps 5mA Plate Power 20W peak...

Page 4: ...and diodes 2A3 300B 5Y3 Jumper any 7 8 or 9 pin tube Connections Connecting a VacuTrace is simple Use the BNC cables provided to connect the X Y and Z outputs to your oscilloscope Note not all oscillo...

Page 5: ...shuts down all signals to the sockets including heater supplies Selecting A or B tests just that tube A B mode alternately tests both tubes resulting in overlapped curves and is ideal for matching tu...

Page 6: ...sts the screen voltage when in pentode mode Status LED indicates the present operating mode or condition When in standby it is red During normal operation it is green If flashing yellow then VacuTrace...

Page 7: ...p connected to cathode 7 5H Switched 5V heater power 8 SCREEN Screen can be switched to plate common to A and B 9 10 IKB Cathode B 11 GRIDB Grid B 12 6H 6 3V heater return 13 GND 14 5H 5V heater retur...

Page 8: ...ts to appropriate levels Set the attenuator controls on your oscilloscope to the desired gain levels as given in the following table Output Oscilloscope Actual Plate Screen 1V div 0 5V div 100V div 50...

Page 9: ...combine all three Modes Tube matching is accomplished using the A B mode VacuTrace automatically alternates sweeps between tube A and tube B displaying both sets of curves simultaneously Differences i...

Page 10: ...o VacuTrace Transfer Function By switching the Output to gm the oscilloscope display changes to current vs grid voltage You will probably have to readjust the attenuator on the X axis to get a better...

Page 11: ...rating point is dialed in switch Output to Ik to read the resulting cathode current in milliamps Ratios VacuTrace provides dynamic ratio measurements of great value to circuit designers namely transco...

Page 12: ...to a new value every time the plate reaches 0V The grid is stepped to eight different levels starting at 0V The oscilloscope photo below shows the relationship between plate and grid voltages The pea...

Page 13: ...d as the reference for the LED analog to digital converter and the resulting cathode current modulation just the ac component is used as the input This creates an analog divider circuit to calculate I...

Page 14: ...stripping damage Be careful not to exceed any of the tube s maximum operating specifications VacuTrace can deliver a lot of voltage current and power to a tube Small signal types such as a 12AX7 are v...

Page 15: ...ate correctly AC input voltage selection on wrong setting LED display does not work VacuTrace must be in Hold mode Curves not generated Faulty tube Oscilloscope not in XY mode or set up improperly Hea...

Page 16: ...d to others or used for any purpose and the document shall not be copied in whole or in part Copyright Hagerman Technology LLC 2000 All rights reserved 5 65V 14mA n a A VacuTrace Power Supply Hagerman...

Page 17: ...1 R22 2k Q1 2N3906 C16 100n C17 100n C13 10u 10V R25 100k 1 R43 100k 1 U5B LM13700 11 16 9 10 12 13 15 14 6 Q5 IRF820 R18 4k7 R14 470 Q4 IRF820 R20 16 1 2W R17 10k R12 470 D8 1N5237B 8V2 R9 10k Q2 ZT...

Page 18: ...December 22 2000 Title Size Document Number Rev Date Sheet of 6V 6V 400V Q12 ZTX458 R49 1M P2 J2 J2 P2 S1 LM358 U4B 5 6 7 4 8 R51 470k 1 4W R48 22k 1W R52 220 1 4W R55 249k 1 1 4W R57 249k 1 R59 4k99...

Page 19: ...6V U8B CD4520B CK 9 EN 10 R 15 Q3 14 V 16 V 8 Q2 13 Q1 12 Q0 11 U7D CD4081B 14 11 7 13 12 U9A CD4001B 14 3 7 2 1 U8A CD4520B CK 1 EN 2 R 7 Q3 6 V 16 V 8 Q2 5 Q1 4 Q0 3 U9C CD4001B 14 10 7 9 8 U9D CD4...

Page 20: ...D18 1N4148 R65 200k 1 D14 1N4148 R82 2k R71 10k U10A LM13700 11 1 8 7 5 4 2 3 6 D16 1N4148 R86 71k5 1 C34 470p R78 649k 1 C30 220p R90 34k0 1 1 4W C26 47p R84 162k 1 C28 100p P3 S2A J3 C33 220p Q14 2N...

Page 21: ...3 U11B 5 6 7 4 8 R103 10k P4 J4 LM393 U11A 3 2 1 4 8 R105 10k P4 LM393 U12A 3 2 1 4 8 R110 10k P4 J4 Q29 2N3906 J34 R104 10k P7 S3 P5 J32 R119 20k0 1 R100 2k R99 10k R111 100 R117 13k0 1 R116 10k0 1 R...

Page 22: ...8 1 5 7 6 D25 1N4148 S4B LM358 U16B 5 6 7 4 8 P6 J6 U15C CD4066B 14 9 7 6 8 D24 1N4148 D23 1N4148 R122 1k R124 10k R125 10k R126 10k R123 10k R141 20R0 3W 1 R136 20R0 3W 1 R138 10k0 1 R137 10k0 1 R12...

Page 23: ...22u 10V C46 220n D27 1N4007 C41 100p J10 J8 C43 220n J10 R150 100k J9 C48 22u 10V D26 1N4148 D29 1N4148 P8 J9 J9 J10 S5A J8 P8 J43 J7 P7 P7 J7 J52 J10 S5D R161 470 R162 470 R160 470 J10 J10 J9 J10 J9...

Page 24: ...logy LLC P O Box 26437 Honolulu HI 96825 9 9 Friday August 18 2000 Title Size Document Number Rev Date Sheet of 100 100 100 0R62 1W 0R62 1W 100 6SN7 1 2 3 4 5 6 7 8 5Y3 1 2 3 4 5 6 7 8 2A3 300B 1 2 3...