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132: Difference between revisions
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The rectifier diodes are solid state, | The rectifier diodes are solid state, | ||
but the regulators are tube. | but the regulators are tube. | ||
An [[OG3]] tube is used to generate a -150 | An [[OG3]] tube is used to generate a -150 V reference voltage that is used | ||
for all of the other regulated voltages. | for all of the other regulated voltages. | ||
The +225 V and +350 V supplies are floating supplies stacked | The +225 V and +350 V supplies are floating supplies stacked | ||
on top of the +189 V unregulated DC that feeds the +100 V supply. | on top of the +189 V unregulated DC that feeds the +100 V supply. | ||
The 132 has a fan that is always on when the power is on, | The 132 has a fan that is always on when the power is on, | ||
and a 137 | and a 137 °F (58 °C) [[thermal cutoff]] for the rest of the circuitry. | ||
The differential front panel output of the 132 has an output impedance of about 5 kΩ per side. | The differential front panel output of the 132 has an output impedance of about 5 kΩ per side. | ||
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only reduce the available output swing. A load impedance of 50 kΩ maximizes gain and further | only reduce the available output swing. A load impedance of 50 kΩ maximizes gain and further | ||
increases in load impedance have little effect on system performance. | increases in load impedance have little effect on system performance. | ||
==Manuals== | |||
* [http://w140.com/tek_132.pdf Tektronix 132 Manual (PDF)] | * [http://w140.com/tek_132.pdf Tektronix 132 Manual (PDF)] | ||