Aim-TTi Programmable Laboratory / Bench DC Power Supplies

Aim-TTi is one of the world's major producers of laboratory bench and system power supplies with over forty years of experience. Hundreds of thousands of Aim-TTi dc power supplies are in everyday use around the world. The main website for Aim-TTi is now www.aimtti.com where there is full information on other Aim-TTi test and measurement equipment. This site (www.tti-power.co.uk) has historically contained detailed information on Thurlby and TTi power supplies only and is now minimally maintained. Links on this site may go to www.aimtti.com or www.ttid.co.uk (TTid is the UK instrument distribution arm of TTi).

As well as the ranges of the standard bench-top power supply, Aim-TTi also offer bus programmable power supplies (denoted by a "P" suffix) incorporating USB, LAN/LXI, GPIB (IEEE-488) and/or RS-232 interfaces. Rack kits for most models are also available. You can find details on the full range of products from Aim-TTi, including their datasheets, manuals etc. at www.aimtti.com .

For information on technical aspects, please see the following:

A tabulated comparison list of power supplies is also available.

Linear regulated laboratory power supplies

EL-R Series

Manual control bench power supply series

8 models - 30W to 130W;
single, dual or triple outputs
30W, 60W or 90W single output models: up to 56V
Constant voltage or constant current operation
Independent 4 digit meters for voltage and current
Switchable remote or local sensing
DC output switches; automatic mode indication

PL and PL-P Series

Manual and remote control bench/system PSUs

6 + 6 models, 48W to 228W, single, dual, triple outputs
True analogue controls with advanced digital features
Settings can be locked at the touch of a button (S-Lock)
High precision; very low noise; remote sense
Ultra-compact design (¼ rack 3U) - uses less space
PL-P has RS232, USB, LAN (LXI) or GPIB bus interfaces

QL Series II and QL-P Series II

Digitally controlled bench and system power supplies

3 + 3 models, 105W to 242W, single or triple outputs
Control via numeric keypad or spinwheel; setting stores
High setting resolution of 1mV at up to 56 volts
High precision; very low noise; remote sense
Multiple ranges for increased current flexibility
QL-P has RS-232, USB, GPIB and LAN (LXI) interfaces

PLH and PLH-P Series

Manual and remote control higher voltage PSUs

2 + 2 models, 90W, single output, 120V or 250V
True analogue controls with advanced digital features
Settings can be locked at the touch of a button (S-Lock)
Low current range gives resolution down to 0.01mA
Ultra-compact design (¼ rack 3U) - uses less space
PLH-P has RS232, USB, LAN (LXI) or GPIB interfaces

Mixed-mode regulated laboratory power supplies

EX-R Series

Manual control bench power supply series

9 models - 175W to 420W; single, dual or triple outputs
Voltage up to 42V; current up to 20A
Constant voltage or constant current operation
Independent 4 digit meters for voltage and current
Switchable remote or local sensing
DC output switches; automatic mode indication

MX and MX-P Series

Digitally controlled bench and system power supplies

3 + 3 models - Triple or Quad full performance outputs
Range switching gives multiple voltage/current combinations
Graphic LCD with illuminated soft key control
200 setting memories for individual or multiple outputs
MX-P has RS-232, USB and LAN (LXI) interfaces with GPIB optional

TSX and TSX-P Series

Manual and remote control bench/system PSUs

4 models - 35V-10A and 18V-20A models (single output)
Bench or rack mounting, front & rear terminals
Very low noise, excellent transient response
Analogue control (TSX), Digital control (TSX-P)
TSX-P LXI has USB, RS-232 and LXI/LAN interfaces and optional GPIB

PowerFlex and PowerFlex+ regulated laboratory power supplies

CPX and CPX-P Series

Manual and remote control PSU series

7 models - single or dual outputs, 360W to 840W
PowerFlex design gives variable voltage & current combinations within a maximum power range
Smart analogue controls including S-Lock
Isolated voltage tracking on duals (up to 120V or 40A)
Isolated Analog interfaced version (CPX400SA)
GPIB, RS232, USB and LXI conformant LAN interfaces on CPX-P

QPX1200 Series

Digitally controlled bench/system power supplies

QPX1200S/SP - 1.2kW single output autoranging PSU
Up to 60 volts and up to 50 amps maximum
PowerFlex design gives variable voltage & current combinations within a maximum power range
Setting by direct numeric entry or by spin wheel
Bench or rack mounting with front and rear terminals
Analog, RS232, USB, GPIB and LAN (LXI) interfaces

QPX600D Series

Digitally controlled dual bench/system PSUs

QPX1200D/DP - 1.2kW dual output autoranging PSU
Up to 80 volts and up to 50 amps maximum
PowerFlex+ design gives extra wide variable voltage & current combinations within a maximum power range
Setting by direct numeric entry or by spin wheel
Smart tracking functions for series/parallel use
Analog, RS232, USB, GPIB and LAN (LXI) interfaces

QPX750SP

Digitally controlled bench/system PSU

750W single output autoranging PSU
Up to 80 volts and up to 50 amps maximum
PowerFlex+ design gives extra wide variable voltage & current combinations within a maximum power envelope
Setting by direct numeric entry or by spin wheel
Colour touchscreen
USB and LAN (LXI) interfaces, GPIB Option

Power technologies for laboratory power supplies

TTi laboratory power supplies use both linear and switch-mode technologies in order to optimize performance and value for money.

Linear regulation

Pure linear regulation still provides the lowest output noise and best transient response. The disadvantage is greater physical size and weight for a given power, together with higher heat output.

Pure linear regulation is used on the EL-R, PL, PLH and QL series.

Mixed-mode regulation

For higher power levels, TTi have developed a technology that uses switch-mode pre-regulation and linear final regulation. This technique combines exceptional efficiency with noise levels that are close to that of pure linear supplies.

Mixed-mode regulation is used in the EX-R, TSX and MX series.

PowerFlex regulation

The TTi PowerFlex system uses a modified form of mixed-mode regulation to provide higher levels of current when the voltage is set to lower values. Although producing slightly higher noise levels than the standard mixed-mode regulation, performance is still excellent.

PowerFlex regulation is used on the CPX and QPX series. Within the QPX series, the QPX600D(P) and the QPX750SP use PowerFlex+ with a greater range of current and voltage for the same power.

Find out more about PowerFlex Regulation