Low noise from high-current bench power supplies
A
Thurlby Thandar Instruments product story
Edited by the Engineeringtalk editorial team
Feb 11, 2002
The newly upgraded TSX range of bench power supply units from TTi (Thurlby Thandar Instruments) offers very high performance at significantly lower cost than other PSUs of comparable performance.
The newly upgraded TSX range of bench power supply units from TTi (Thurlby Thandar Instruments) offers very high performance at significantly lower cost than other PSUs of comparable performance.
Models currently available include 35V, 10A and 18V, 20A units in both standard and programmable versions.
The standard versions incorporate conventional analogue controls, while the programmable versions offer keyboard control along with RS232 and IEEE488 interfaces.
The heart of the TSX Series PSUs is an advanced regulator design which combines switch-mode preregulation with linear postregulation.
The pre-regulator uses specially developed techniques to dramatically reduce the capacitance between input and output, thus eliminating the high levels of common-mode noise normally associated with switch mode PSUs.
The linear post-regulator combines very low levels of output noise with excellent load regulation and transient response, resulting in performance comparable with that of a pure linear design.
The hybrid regulater design provides a PSU which is both smaller and lighter than competitive products.
The high thermal efficiency also means that the PSUs are silent in operation, since fan cooling is unnecessary.
All TSX series PSUs can operate in both constant-voltage and constant-current modes, with automatic crossover and automatic mode indication.
They incorporate high-resolution digital meters for both voltage and current.
Voltage and current levels can be set to high accuracy prior to connection to the load, and the limit settings can be checked at any time.
All versions also incorporate a fully variable overvoltage protection trip to protect against regulator failure.
The newly designed case is half-rack width (3U height), and an optional rack-mount kit is available.
Output terminals are fitted at both front and rear.
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