Description: Tubehunter Store Removed from a working 545/5xx TEKTRONIX scope. IF YOU NEED SCHEMATICS FOR THIS TRANSFORMER ASK ME, OR GO TO THE BAMA SITE : http://bama.edebris.com/manuals/tek/ Tektronix Part number 120-120 This is a factory original power transformer for the 545A oscilloscope. It has 120/240 volt primaries at 1 KVA 500 watts. The physical dimensions for the Tektronix 120-120 transformer are as follows: Height = 15 cm or 6 inches. Width = 12 cm or 4.75 inches. Depth = 11.5 cm or 4.5 inches. The mounting holes are Center to center 9,5 cm or 3.74 inches x 10.1 cm or 4 inches. The weight is approximately 16 pounds.. This is a factory-original transformer which can be used to replace a defective unit in any 545A oscilloscope. It can also be used for hi-fi audio or ham radio applications. Tektronix power transformers were built in-house and guaranteed for the life of the instrument. It has primary/secondary shielding. This transformer has six 6.3 volt heater windings. One of the 6.3 volt windings is HV insulated for crt filaments. It supplies the following RMS plate voltages: 204, 141, 115, 117 and 186. These may be connected in series for various plate voltages. There are two primary windings which may be connected is parallel for 100-150 volt line operation. They may be connected in series for 200-250 volt line ranges. Here's some data on some Tektronix transformers BUT not necessarily the one offer here for sale. These are show to give you an idea of how you could possibly use this transformer for an awesome tube amplifier project. This information was copied form Pete Millets web page: http://www.pmillett.com/tek_xfmrs.htm Transformer 120-0103-00. 1 - 3 & 2 - 4 are 117 v Primary 10 - 11 6.5 v 2.5 A 13 - 12 6.5 v 5.0 A 18 - 19 6.5 v 8.0 A 29 - 30 6.5 v 4.0 A 7 - 14 270 v 200 ma 8 - 15 235 v 200 ma 9 - 16 122 v 100 ma 22 - 23 6.5 v 2.5 A 20 - 21 6.5 v 0.6 A 24 - 25 6.5 v 0.3 A 17 - 26 6.5 v 0.3 A 27 - 28 6.5 v 3.5 A 3 - 6 6.5 v 2.5 A Transformer 120-296: Pins 1-3 and 2-4 are primaries that can be wired in series for 240 volt operation or parallel for 120 volt operation. Pin 5-6 are 6.5 volts at 4.0 amps Pin 7 is a "shield" Pins 8-9 are 6.5 volts at 4.0 amps Pins 12-13 14.0 volts at 2.0 amps Pins 13-14 14.0 volts at 2.0 amps (Pin 13 is the centertap of 12-14) (Pins 15-16 100V ~100ma) Pins 17-18 150 volts at 0.370 amps Pins 19-20 157 volts at 0.210 amps Pins 21-22 135 volts at 0.150 amps There is a pair of white and red wires: 6.5 volts at 0.6 amps (insulated for 3300 volts DC) There are two pairs of yellow and red wires. Each pair is 6.5 volts at 4.0 amps. Tektronix 555 oscilloscope 120-128: 234V mains: 1-4 (link 2, 3) E/S screen: 27 Winding Voltage Current 9-10 208V 160mA 20-21 204V 50mA 11-12 126V 250mA 13-14 126V 250mA Tektronix 555 oscilloscope 120-127: 234V mains: 1-4 (link 2, 3) E/S screen: 21 Winding Voltage Current 5-6 6.3V 0.35A 10-11 6.3V 10A 12-13 6.3V 6A 14-15 148V 160mA Tektronix 521 vectorscope 120-0498-00: 240V mains: 1-4 (link 6, 7) (Two windings 1, 5, 3, 6: 4, 8, 2, 7) E/S screen: 9 Winding Voltage Current 17-18 6.3V ? CRT 15-16 180V ? 13-14 105V ? 12-11-10 28.5-0-28.5V ? Tektronix 545 The windings for the transformer 120-0140-00: 18 - 19 6.4 V 6.0 A 22 - 23 6.4 V 4.0 A 24 - 25 6.4 V 0.6 A Insulated for 1350 Volts 27 - 28 6.4 V 8.0 A 6 - 11 195 V 0.320 A 8 - 15 137 V 0.800 A 7 - 14 113 V 0.500 A 5 - 10 113 V 0.500 A 20 - 21 180 V 0.320 A 17 - 26 6.4 V 4.0 A 12 - 13 6.4 V 7.5 A 9 - 16 6.4 V 4.0 A Corrected: Tektronix 533 oscilloscope 120-037 power transformer The high voltage secondaries were stacked to produce higher voltages. Primaries: 115/230 V 60 hz. Secondaries: 120 V 240 MA 205V 170 M 130V 130 MA 150V 100 MA 210V 80 MA 6.3V 3.3A 6.3V 7.6 A 6.3V 7.1 A 6.3V 4 A 6.3V 600 MA HV Insulated 6.3V 3.8 A, 6.3V 3.7 A These from Rick Nasti: Tektronix Part number 120-117 This is a factory original power transformer for the 502 oscilloscope. It has 120/240 volt primaries at 290 watts. It is 6" x 4 1/2" x 4". It weighs 14 pounds. This is a factory-original transformer which can be used to replace a defective unit in any 502 or 502A oscilloscope. It can also be used for hi-fi audio or ham radio applications. Tektronix power transformers were built in-house and guaranteed for the life of the instrument. It has primary/secondary shielding. This transformer has five 6.3 and one 5 volt volt heater windings. Two of the 6.3 volt windings are HV insulated for crt filaments. It supplies the following RMS plate voltages: 19 CT, 350 CT, 440 CT, and 800 CT. These may be connected in series for various plate voltages. There are two primary windings which may be connected is parallel for 100-150 volt line operation. They may be connected in series for 200-250 volt line ranges. NEW 2/24/08 - From Jur van Slingerland: I have some information about the Tektronix transformer 120-117 mentioned on your site. It's not complete but I think it can be useful to others. I connected the transformer and did some measuring: pins 5-5 6.7V pins 7-8-9 355V CT pins 10-11-21 10V CT pins 12-13 5.6V CT pins 14-15-16 446V CT pins 29-17-30 800V CT pins 18-19 6.7V pins 22-23 6.7V pins 34-35 6.7V pins 27-28 6.7V Pins 1, 2, 3, &4 and pins A, B, C, D are used for primary voltages. Pin 20 is a mystery to me (maybe a electrostatic shield?) It looks like there are four 6.3V windings an two 5V heater windings (there are 2 GZ34's in a 502/502A) instead of just one. Tektronix Part number 120-120 This is a factory original power transformer for the 545A oscilloscope. It has 120/240 volt primaries at 1 KVA 500 watts. It is 6" x 5" x 4 1/2". It weighs 18 pounds. This is a factory-original transformer which can be used to replace a defective unit in any 545A oscilloscope. It can also be used for hi-fi audio or ham radio applications. Tektronix power transformers were built in-house and guaranteed for the life of the instrument. It has primary/secondary shielding. This transformer has six 6.3 volt heater windings. One of the 6.3 volt windings is HV insulated for crt filaments. It supplies the following RMS plate voltages: 204, 141, 115, 117 and 186. These may be connected in series for various plate voltages. There are two primary windings which may be connected is parallel for 100-150 volt line operation. They may be connected in series for 200-250 volt line ranges. Tektronix Part number 120-0431-00 This is a factory original fully EMI shielded power transformer for the 556 oscilloscope. It has 120/240 volt primaries at 1 KVA 840 watts. It is 7 1/2" x 4 5/8" x 4 7/8". It weighs 25 pounds. This is a factory-original transformer which can be used to replace a defective unit in any 556 oscilloscope. It can also be used for hi-fi audio applications. Tektronix power transformers were built in-house and guaranteed for the life of the instrument. It has external magnetic and EMI shielding as well as primary/secondary shielding. All factory leads are intact with connectors. This transformer has five 6.3 volt heater windings. Two of the 6.3 volt windings are HV insulated for crt filaments. It supplies the following RMS plate voltages: 116, 126, 130, and 145. These may be connected in series for various plate voltages. There are two primary windings which may be connected is parallel for 100-150 volt line operation. They may be connected in series for 200-250 volt line ranges. Listing and template services provided by inkFrog
Price: 54.99 USD
Location: Tonopah, Arizona
End Time: 2024-11-21T20:15:39.000Z
Shipping Cost: N/A USD
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Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
UPC: NA
