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.
| 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 |
| | | |
| Farnell L30AT | Rapid PS3025 | Farnell ET30/2 |
Specification | variable 0-50V, variable current limit 0-500mA | variable 0-30V, variable current limit 0-2.5A | variable 0-15V/2A or 0-30V/1A, fixed current limit |
dual independent PSUs | fixed 12V & 5V, 500mA | dual independent PSUs |
Condition | Old but usable | Excellent | Old but usable |
volts controls scratchy <2V | | Caution w.r.t. the current limits fixed at ~10% above the rated current |
current limit controls scratchy | | |
both satisfactory once settled | | |
| | |
Other
There are many many PSU bricks that can be hacked, located on the shelves near the glass door.