Four forms of power supplies are widely used today: unregulated, ferroresonant, series-regulated, and switching-regulator types. Differences include maintaining constant voltage output, cost ...

With the transistors shown in Figure 1, the power-supply rejection holds well beyond the audio band. Fig 3. A higher-power ripple-eater augments the simple design with an additional transistor (Q4 ...

After we last saw [David Lovett] of [Usagi Electric], he was knee-deep in trying to fix a DEC PDP-11/03 power supply, which fortunately led to a fixed PSU and a very happy PDP-11/23 system installe… ...

The first power supply I built, well after realizing tat ” a big electrolytic” wasn’t good enough for sold state, used a 723. I must have got that t Radio Shack, which maybe impacted on ...

Switching transistors from silicon carbide are to increase the efficiency of voltage converters; MSI is installing them in a 1.6-kilowatt power supply unit.

American Electric Power has purchased BlueStar Energy, an unregulated electricity supplier based in Chicago. BlueStar is an electricity marketer, which means it serves as an alternative to the ...

The Texans who were lucky enough to have not lost power during the winter storm are getting hit with a blizzard of bills, leaving some owing as much as $16,752. Because Texas has an unregulated ...

An LDO is generally based on a linear series regulator technique where the unregulated voltage is buffered by a series transistor element, ... “Power Supply IC Market Will Double by Year 2003, ...

For both designs, the regulating element is realised using a power pass-transistor operating in its active region, e.g., where IC = βIB. Conceptually, this transistor can be considered as a ...

where D is the duty cycle of the buck switch Q1 in Figure 6.When the low-side synchronous switch Q2 conducts, V P is reflected to secondary and rectified as V OUT.The equivalent circuit is shown in ...

Toshiba Corporation (TOKYO:6502) today announced that it has launched an 800V bipolar transistor for switching power supplies of mobile devices that can contribute to reducing standby power ...