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 V<sub>DC</sub> output to the [[134]] amplifier. That output is filtered and regulated down to ~14 V in the amplifier. It works from 50 to 400 Hz and 103.5 to 126.5 V<sub>AC</sub>.
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.


The '''Tektronix 015-0059-01''' was the 230 V<sub>AC</sub> version of this power supply. This was identical to the 115 V<sub>AC</sub> 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 V<sub>AC</sub> version appears to have used the same NEMA 5-15 115 VAC cord and plug. The addition of the two series resistors allows it to work from 207 to 253 V<sub>AC</sub> and 50 to 400 Hz.
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>.


All the manuals show a cord and plug for input AC power. The third and forth photos below show a version with the AC power connector integral to the body. This particular example was built up from parts by [[Deane Kidd]]. This may not have been a Tektronix standard at any time.
These early versions resemble the supplies that came with the '''Tektronix [[131]]''', and the output connectors are the same, but they must not be interchanged.


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 wart" with an output of 18-25 V<sub>DC</sub>. 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 wart" 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.
 
Each version provides an unfiltered full wave rectified 20-25 V<sub>DC</sub> output to the [[134]] amplifier. 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 negative side is held near ground by a pair of anti-parallel diodes and the center conductor is positive.


==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 Left Side w/integral plug, assembled from parts, note wrong part number
015-0058-01 plug R.JPG | Early Right Side w/integral plug
015-0058-01 corded.JPG | Late Power Supply w/cord and plug. Note broken output connector
015-0058-01 output.JPG | Intact Output Connector
015-0058-01 output.JPG | Intact Output Connector
015-0058-01 plug L.JPG | Left Side w/integral plug
015-0058-01 plug R.JPG | Right Side w/integral plug
</gallery>
</gallery>


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

Revision as of 21:43, 29 March 2023

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.

These early versions resemble the supplies that came with the Tektronix 131, and the output connectors are the same, but they must not be interchanged.

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.

Each version provides an unfiltered full wave rectified 20-25 VDC output to the 134 amplifier. 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 negative side is held near ground by a pair of anti-parallel diodes and the center conductor is positive.

Pictures

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

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

  • Early Right Side w/integral plug

    Early 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

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