发明名称 |
Low power high efficiency switching power supply |
摘要 |
A low power high efficiency switching power supply comprises a switching transducer having primary and secondary windings. The primary winding is supplied with a primary voltage over a series connected constant current source and Zener diode. The primary voltage is chopped by an FET which has a gate connected to an oscillator operating at relatively low frequency. The secondary windings of the transformer are connected to full-wave rectifiers which convert the A.C. signal produced by the chopping of the primary voltage, int a D.C. signal. Efficiency is maximized by using fast switching FET's and low flux densities in the transformer. The power supply is particularly useful in 4-20 mA current loops.
|
申请公布号 |
US4669038(A) |
申请公布日期 |
1987.05.26 |
申请号 |
US19850765404 |
申请日期 |
1985.08.13 |
申请人 |
THE BABCOCK & WILCOX COMPANY |
发明人 |
WHITFORD, ROWLAND E. |
分类号 |
H02M3/28;H02M3/337;(IPC1-7):H02M3/335 |
主分类号 |
H02M3/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|