JPS5925131A - Electricity-saving drive circuit for 2-wound monostable polarized relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The purpose of the invention is to enable power saving by excitation with a sufficiently high AT (magnetomotive force) during attraction, and by setting the required minimum AT in the holding state after attraction. do.

Embodiments of the great invention will be described below with reference to FIGS. 1 to 3.

Coil 1 and coil 2, which has a higher AT than coil 1, are connected in series, capacitor 3 is connected in parallel with coil 1, and switch 4 is connected in series.
It is connected to the power supply 5 via.

As shown in Fig. 3, two coils of the coil 1.2 are wound in the same direction around the coil frame 6, and an armature 7 is inserted through the coil frame 6, and a yoke 8.9 is attached to each end of the armature 7. A permanent magnet IO is interposed between the yokes 8 and 9. This electromagnet is mounted on the relay body 11, and a card ν attached to the armature 7 drives the movable springs B and 13 to switch between the fixed contact terminals 14 and 15. Reference numerals 16 and 17 are coil terminals that respectively connect the two-turn coils 1 and 2. 18
is the case.

When the switch 4 is closed, the current I.1 in the coil 1 flows as shown in FIG. When E volt is applied, a high AT sufficient to attract the high AT occurs, and during charging, a composite current of the decreasing current Ls of the capacitor C and the increasing current if of the coil 1 flows to the coil 2, and the capacitor After charging is completed, as shown in Fig. 2 (6), both coils 1.
The sum of the windings of is integrated to become the composite AT, and this composite A
T is about 1/3 of the suction AT, which can be held sufficiently in a general relay, and AT, which has a little margin at about 1/3.
By setting it as , the current consumption during holding can be saved. Figure 2(d) shows the change in the composite AT (magnetomotive force).

Furthermore, R1+R2 is the winding resistance value of coil 1.2, Ns
wN2 is also the number of turns.

In the conventional type, the coil 1 was a pure resistance like a wheel, but in such a conventional configuration, this pure resistance did not contribute at all to the suction AT and had the disadvantage of wasting power consumption. However, in the great invention, since the coil 1 also contributes to the suction AT, there is no wasted power consumption at all, and the effect of stabilizing the operation of the relay during the suction operation can be obtained.

As explained above, according to the power-saving drive circuit of the great invention two-turn coil monostable polarized relay, the coil 1 is connected in series with the coil 2 which has a higher AT and is wound in the same direction than the coil 1, and a capacitor is connected to the coil 1. 3 are connected in parallel, and the capacitor 3 bypasses the capacitor 3 during suction to excite the high AT coil 2 and serves as a composite AT that can be held after charging the capacitor 3.
As the capacitor 3 charges, the coil 2 also contributes to the suction AT, and during holding, both coils 1 and 2 are connected in series to create a composite AT that can be held, reducing power consumption and ensuring reliability. Therefore, the suction A
Both coils contribute to T to ensure suction operation,
During holding, it is possible to save power by suppressing consumption '1.

[Brief explanation of drawings]

1 to 3 show an embodiment of the great invention, in which FIG. 1 is a circuit diagram, FIG. 2 is a time chart, and FIG. 3 is an exploded perspective view of a relay. 1.2...Coil, 3...Capacitor. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemoto (and 2 others) Figure 1 Figure 2

Claims (1)

[Claims] (1) Coil 1 and coil 2 with higher AT and winding in the same direction than coil 1 are connected in series, and coil 11 and a capacitor are connected in parallel.When attracting, the capacitor is used as a bypass to excite coil 2 with high AT. A power-saving drive circuit for a two-turn monostable polarized relay, characterized in that it functions as a composite AT capable of holding a capacitor after charging.