PS505: Difference between revisions
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{{TM500 | mfg=Tektronix | type=PS505 | function=3.0–5.5 V, 4 A power supply | class=power supply | image=Tek ps505.JPG | introduced=1975 | discontinued=1977 | | {{TM500 | mfg=Tektronix | type=PS505 | function=3.0–5.5 V, 4 A power supply | class=power supply | image=Tek ps505.JPG | introduced=1975 | discontinued=1977 | | ||
designers= |manuals= | designers= |manuals= | ||
* [[Media:070-1784-00.pdf|Tektronix PS505 Manual]] ( | * [[Media:070-1784-00.pdf|Tektronix PS505 Manual]] (OCR) | ||
}} | }} | ||
It is designed to operate in the right-hand (high power) compartment of a [[TM504]] or [[TM506]]. | It is designed to operate in the right-hand (high power) compartment of a [[TM504]] or [[TM506]]. | ||
Revision as of 04:27, 16 February 2023
The Tektronix PS505 is a 3.0–5.5 V, 4 A power supply plug-in for the TM500 system.
It is designed to operate in the right-hand (high power) compartment of a TM504 or TM506.
In a low-power compartment, a rear switch limits the output to 1 A (indicated by front-panel "NON FLOATING / 1 A LIMIT" LED).
Key Specifications
| Output voltage | 3.0 V to 5.5 V DC, floating (only if operated in a high-power compartment) |
|---|---|
| Output current | 4 A (must be limited to 1 A in a low-power compartment); foldback limit from 4.1 A to 1.5 A (latching) |
| Overvoltage protection | 7 V |
| Line regulation | ±10 mV for 10% line voltage change |
| Load regulation | ±5 mV for 0.5 to 4 A load current change, 20 μs transient recovery |
| Stability and drift | 0.1% + 5 mV drift in 8 hours; max. 0.01%/°C |
The regulator circuit uses one 741 and one 5558 opamp. Reference is a 9 V zener.
Pictures
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Front view
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Block diagram
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Schematic
