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equipment:psus [2018/04/20 15:41]
tggzzz
equipment:psus [2019/10/25 12:35] (current)
tggzzz
Line 1: Line 1:
 +===== Power Supplies =====
 +
 +==== Safety ====
 +
 +Some of these power supplies can deliver **dangerous voltages and currents**.
 +
 +If unsure how to use them safely, ask.
 +
 +==== Bench Power Supplies ====
 Location: electronics test bench and shelves, but if members forget to put them back after using them, they might be anywhere. Location: electronics test bench and shelves, but if members forget to put them back after using them, they might be anywhere.
 +
 +| ^Farnell PDD3502A ^Isotech IPS1125 ^Farnell TOPS2 ^Farnell TSV70 mk2 ^
 +^Specification |variable 0-35V, variable current limit 0-2A |variable 0-20V 0-250mA, fixed 5V 1A |variable 4-6V 5A, variable 12-17V 1A |variable 0-35/70V, variable current limit 0-10/5A |
 +^::: |dual independent and **tracking** PSUs |triple independent PSUs |single plus dual tracking PSUs |single PSU |
 +^Condition |**Modern**,​ high quality |**Modern** basic |Old basic, untested but good provenance |Old, untested |
 +^::: |Can connect PSUs in series and parallel |Caution w.r.t. the fixed current limit|Caution w.r.t. unknown current limits; might be via fuses! |**Caution: shorting 10A could cause molten metal to splatter**; recommend using with eye/face protection |
 +^::: | |Ideal for logic plus analogue |Ideal for logic plus analogue |Caution: requires the sense wires to be connected |
 +^::: | | | |Caution: weighs 26kg, so two man lift |
 +^::: |{{:​test_equipment:​farnell-pdd3502a.jpg?​direct&​200 ​ }} |{{:​test_equipment:​isotech-ips1125.jpg?​direct&​200 ​ }} |{{:​test_equipment:​farnell-tops2.jpg?​direct&​200 ​ }} |{{:​test_equipment:​farnell-tsv70-2.jpg?​direct&​200 ​ }} |
  
 | ^Farnell L30AT ^Rapid PS3025 ^Farnell ET30/2 ^ | ^Farnell L30AT ^Rapid PS3025 ^Farnell ET30/2 ^
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 ^::: |dual independent PSUs |fixed 12V & 5V, 500mA |dual independent PSUs | ^::: |dual independent PSUs |fixed 12V & 5V, 500mA |dual independent PSUs |
 ^Condition |Old but usable |Excellent |Old but usable | ^Condition |Old but usable |Excellent |Old but usable |
-^::: |volts controls scratchy <2V | | Caution w.r.t. the current limits fixed| +^::: |volts controls scratchy <2V | |Caution w.r.t. the current limits fixed at ~10% above the rated current ​
-^::: |current limit controls scratchy | | at ~10% above the rated current|+^::: |current limit controls scratchy | | |
 ^::: |both satisfactory once settled | | | ^::: |both satisfactory once settled | | |
 ^::: | {{:​test_equipment:​farnellL30AT.jpg?​direct&​200 ​ }} | {{:​test_equipment:​psurapid3025.jpg?​direct&​200 ​ }} |{{:​test_equipment:​farnell-et30-2.jpg?​direct&​200 ​ }} | ^::: | {{:​test_equipment:​farnellL30AT.jpg?​direct&​200 ​ }} | {{:​test_equipment:​psurapid3025.jpg?​direct&​200 ​ }} |{{:​test_equipment:​farnell-et30-2.jpg?​direct&​200 ​ }} |
 +
 +==== Other ====
  
 There are many //many// PSU bricks that can be hacked, located on the shelves near the glass door. There are many //many// PSU bricks that can be hacked, located on the shelves near the glass door.
  • equipment/psus.1524235284
  • Last modified: 2 years ago
  • by tggzzz