015-0058-01: Difference between revisions

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The '''Tektronix 015-0058-01''' is the power supply for the Tektronix [[134]] current probe amplifier. It plugs into a standard NEMA 5-15 115 VAC receptacle and provides a full wave rectified nominal 20-25 VDC output to the [[134]] amplifier. That output is regulated down to ~14 V in the amplifier. It works from 50 to 400 Hz and 103.5 to 126.5 VAC.
'''Power Supplies for the Tektronix Type 134 Current Probe Amplifier'''


Tektronix also made a 230 VAC version of this power supply, the '''015-0059-01'''. This was identical to the 115 VAC version except for the cover, which had the different part number and voltage rating printed on it, and the addition of two series dropping resistors (2 kΩ & 2.7 kΩ, both 3 W) ahead of the transformer primary. Oddly, this 230 VAC version appears to have used the same NEMA 5-15 plug. The addition of the two series resistors allows it to work from 207 to 253 VAC and 50 to 400 Hz.
The '''Tektronix 015-0058-00''' is the early 115 V<sub>AC</sub> power supply version for the Tektronix [[134]]. It has a standard NEMA 5-15 AC power plug built onto the body of the power supply.


All the manuals show a cord and plug for input AC power. Note that some of the photos below show a version with the AC power connector integral to the body. This particular example was built up for me from parts, by Deane Kidd. This may not have been a Tektronix standard at any time.
The '''Tektronix 015-0059-00''' is the early 230 V<sub>AC</sub> power supply version for the Tektronix [[134]]. It is identical to the 115 V<sub>AC</sub> version except for the cover, which has a different part number and voltage rating printed on it, and the addition of dropping resistors (2 kΩ & 2.7 kΩ, both 3 W) in series with the transformer primary. Oddly, this 230 V<sub>AC</sub> version appears to use a NEMA 5-15 115 V<sub>AC</sub> cord and plug. The addition of the two series resistors allows it to work from 207 to 253 V<sub>AC</sub>.


The DC output connector is a Tektronix design that was unusually fragile. This complete power supply could probably be rather easily replaced by any common "wall wort" with an output of 18-25 VDC. If you're tempted to do this, I recommend replacing the cord on the [[134]] with a modern receptacle that accepts the existing connector on the end of the "wall wort" connector. This would eliminate the original, but fragile, Tektronix connector. It would be wise to add a reverse polarity protection diode inside the [[134]] if you do this.
The '''Tektronix 015-0058-01''' is the later 115 V<sub>AC</sub> version of the power supply for the Tektronix [[134]] Current Probe Amplifier. It differs from the 015-0058-00 in that it has a ~1 m AC power cord, an extended section of the housing to accommodate the power cord and strain relief, and a different part number on the plastic housing.


If you happen to have one of these power supplies apart, it might be worthwhile adding some series resistance to the primary, as Tektronix did to make their 230 V version. Add ~40 Ω for each volt that your typical line voltage exceeds 115 (or 230) VAC. This would avoid saturating the core of the transformer due to today's higher line voltage and also reduce the power dissipation in the [[134]] pass transistor.
The '''Tektronix 015-0059-01''' is the later 230 V<sub>AC</sub> version of this power supply. It differs from the 015-0059-00 in that it has a ~1 m AC power cord, an extended section of the housing to accommodate the power cord and strain relief, and a different part number on the plastic housing.
 
The '''Tektronix 013-0050-00''' battery adaptor, allows the Type [[134]] to be powered from any 22.5 V battery capable of delivering 70 mA. Note that, due to the complete absence of ground connections, this accessory could also be used for the Type [[131]].
 
The latest version ''(please add)'' of the Type [[134]] power supply appears to be a Tektronix branded wall wart with an AC line cord and output to an inline connector.
 
Each version provides an unfiltered full wave rectified 20-25 V<sub>DC</sub> output to the [[134]] amplifier. The negative side is held near ground by a pair of anti-parallel diodes and the center conductor of the output connector is positive. That output is filtered and regulated down to ~14 V in the amplifier. They work from 50 to 400 Hz and 103.5 to 126.5 V<sub>AC</sub>, or 201 to 253 V<sub>AC</sub> for the 230 V versions. The output is via a proprietary coaxial Tektronix connector.
 
The early versions resemble the '''Tektronix [[131]]''' [[015-027 | power supplies ]], with the built-in AC power plug, and all the output connectors are the same, but the [[015-027 | 131 power supplies ]] and [[134]] power supplies are not interchangeable, due to the difference in grounding.


==Pictures==
==Pictures==
<gallery>
<gallery>
015-0058-01 corded.JPG | Power Supply w/cord and plug. Note broken output connector
015-0058-01 plug L.JPG | Early Style, Left Side w/integral plug, assembled from parts, note wrong part number
015-0058-01 output.JPG | Output Connector
015-0058-01 plug R.JPG | Early Style, Right Side w/integral plug
015-0058-01 plug L.JPG | Left Side w/integral plug
015-0058-01 corded.JPG | Late Power Supply w/cord and plug. Note broken output connector
015-0058-01 plug R.JPG | Right Side w/integral plug
015-0058-01 output.JPG | Intact Output Connector
015-0058-01.later.jpg | later version, thinner cord, sleeve w/conductor labels
134 latest.jpg | latest version with wall wart PS
</gallery>
</gallery>


[[Category:Accessory power supplies]]
[[Category:Accessory power supplies]]

Latest revision as of 08:02, 4 April 2023

Power Supplies for the Tektronix Type 134 Current Probe Amplifier

The Tektronix 015-0058-00 is the early 115 VAC power supply version for the Tektronix 134. It has a standard NEMA 5-15 AC power plug built onto the body of the power supply.

The Tektronix 015-0059-00 is the early 230 VAC power supply version for the Tektronix 134. It is identical to the 115 VAC version except for the cover, which has a different part number and voltage rating printed on it, and the addition of dropping resistors (2 kΩ & 2.7 kΩ, both 3 W) in series with the transformer primary. Oddly, this 230 VAC version appears to use a NEMA 5-15 115 VAC cord and plug. The addition of the two series resistors allows it to work from 207 to 253 VAC.

The Tektronix 015-0058-01 is the later 115 VAC version of the power supply for the Tektronix 134 Current Probe Amplifier. It differs from the 015-0058-00 in that it has a ~1 m AC power cord, an extended section of the housing to accommodate the power cord and strain relief, and a different part number on the plastic housing.

The Tektronix 015-0059-01 is the later 230 VAC version of this power supply. It differs from the 015-0059-00 in that it has a ~1 m AC power cord, an extended section of the housing to accommodate the power cord and strain relief, and a different part number on the plastic housing.

The Tektronix 013-0050-00 battery adaptor, allows the Type 134 to be powered from any 22.5 V battery capable of delivering 70 mA. Note that, due to the complete absence of ground connections, this accessory could also be used for the Type 131.

The latest version (please add) of the Type 134 power supply appears to be a Tektronix branded wall wart with an AC line cord and output to an inline connector.

Each version provides an unfiltered full wave rectified 20-25 VDC output to the 134 amplifier. The negative side is held near ground by a pair of anti-parallel diodes and the center conductor of the output connector is positive. That output is filtered and regulated down to ~14 V in the amplifier. They work from 50 to 400 Hz and 103.5 to 126.5 VAC, or 201 to 253 VAC for the 230 V versions. The output is via a proprietary coaxial Tektronix connector.

The early versions resemble the Tektronix 131 power supplies , with the built-in AC power plug, and all the output connectors are the same, but the 131 power supplies and 134 power supplies are not interchangeable, due to the difference in grounding.

Pictures

  • Early Style, Left Side w/integral plug, assembled from parts, note wrong part number

    Early Style, Left Side w/integral plug, assembled from parts, note wrong part number

  • Early Style, Right Side w/integral plug

    Early Style, Right Side w/integral plug

  • Late Power Supply w/cord and plug. Note broken output connector

    Late Power Supply w/cord and plug. Note broken output connector

  • Intact Output Connector

    Intact Output Connector

  • later version, thinner cord, sleeve w/conductor labels

    later version, thinner cord, sleeve w/conductor labels

  • latest version with wall wart PS

    latest version with wall wart PS

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