Power supply suitable for dry and damp locations
Power Sources Unlimited
LD015D power supply
Power Sources Unlimited has announced the LD015D Series AC-DC Constant Current LED driver power supply, which is fully potted and suitable for dry and damp locations.
It adheres to UL1310 Class 2 Safety Standards (110V AC) or CE compliancy (230V AC).
Features include input voltage of 110 or 230V AC, DC output ranges from 8 to 48V DC and wide selection of pre-adjusted constant current outputs.
Other features include: operating temperature range of -20 to 60C, phase dimmable, compatible with standard Triac and electronic low-voltage dimmers; and 82 per cent efficient typical.
Units are RoHS compliant, Reach compliant, FCC Class B, CE, EN61000-4, 2, 3, 4, 5, 6, 8, 11 and UL.cUL safety certified, and carry a three-year warranty.
The Eltek Valere Flatpack2 HE Series of rectifiers has been introduced into the global telecommunications market, offering a conversion efficiency up to 96.5 per cent and a 50 per cent reduction in wasted energy, according to Power Sources Unlimited.
The LT1070 five-terminal switching regulator from Linear Technology has been designed for ease of use and economy.
As Cedrat explains in this paper, the permanent magnet synchronous motor (PMSM) is becoming popular in high-performance applications as compared with other types of AC motors. A short circuit between turns is the most critical fault in a machine; it is quite difficult to detect and almost impossible to remove. There are a number of techniques used to detect turn-to-turn faults.
A tutorial on SAR type analogue-to-digital converters (ADCs), this application note from Linear Technology contains detailed information on several 12-bit circuits. Comparator, clocking and pre-amplifier designs are discussed. A final circuit gives a 12-bit conversion in 1.8µsec. Appended sections explain the basic SAR technique and explore digital-to-analogue considerations.
At Electronica 2014, GaN Systems will be exhibiting its comprehensive range of gallium nitride devices, with current ratings from 8A to 250A.