AU2008201387A1

AU2008201387A1 - Operative control circuit of multiple electromagnetic actuating devices in series and parallel connection

Info

Publication number: AU2008201387A1
Application number: AU2008201387A
Authority: AU
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-26
Filing date: 2008-03-26
Publication date: 2009-10-15

Description

Australian Patents Act 1990 - Regulation 3.2 ORIGINAL COMPLETE SPECIFICATION STANDARD PATENT Invention Title Operative control circuit of multiple electromagnetic actuating devices in series and parallel connection The following statement is a full description of this invention, including the best method of performing it known to me/us: P/00/0 1l TITLE: OPERATIVE CONTROL CIRCUIT OF MULTIPLE ELECTROMAGNETIC ACTUATING DEVICES IN SERIES AND PARALLEL CONNECTION 5 BACKGROUND OF THE INVENTION (a) Field of the invention The present invention is mainly related to the individually installed driving coils of two or more than two electromagnetic actuating devices, wherein driving coils individually installed by the two or more than two 10 electromagnetic actuating devices is operatively controlled by the switching device to actuate and be electrified to appear relatively lower impedance in parallel connection or series and parallel connection wherein after the electromagnetic actuating devices are actuated, the driving coils individually installed by the two or more than two 15 electromagnetic actuating devices being operatively controlled by the switching device is switched to appear relatively higher impedance in series connection or series and parallel connection thereby reducing currents passing through driving coils while required operating characteristics for individual electromagnetic actuating devices after 20 electrification are still satisfied thereby saving electric power and reducing heat loss in the driving coils of the electromagnetic actuating devices. (b) Description of the Prior Art In the conventional method by passing currents through the driving coils to produce the electromagnetic effect for driving the two or more 25 than two individual electromagnetic actuating devices, the coil electrification status remains unchanged when the electrification status is actuated and held, i.e. the required excited currents for actuating and holding electrification are the same, therefore it has the disadvantages of the high heat loss and wasting electric energy. 30 SUMMARY OF THE INVENTION The present invention discloses an operative control circuit of multiple electromagnetic actuating devices in series and parallel connections which is through the switching device to operatively control 5 two or more than two electromagnetic actuating devices individually installed with driving coils including applications for normal close or normal open type electromagnetic brakes, normal close or normal open type electromagnetic clutches, normal close or normal open type electromagnetic switches, normal close or normal open type 10 electromagnetic relays, normal close or normal open type solenoid valves, etc. as well as magnets, electromagnetic locks, spiral tube windings or other electromagnetic actuating devices with driving coils for driven by electromagnetic actuation effects, or multi-operating type electromagnetic actuating devices which can be driven by driving coils or operated by 15 numerous manual or mechanical power methods, wherein individually installed driving coils of two or more than two electromagnetic actuating devices is operatively controlled by the switching device to actuate and be electrified to appear relatively lower impedance in parallel connection or series and parallel connection thereby causing the electromagnetic 20 actuating device to produce a larger electromagnetic actuating power, wherein after the electromagnetic actuating devices are actuated, the individually installed driving coils of the two or more than two electromagnetic actuating devices being operatively controlled by the switching device are switched to appear relatively higher impedance in 25 series connection or series and parallel connection thereby reducing currents passing through driving coils while required operating characteristics for individual electromagnetic actuating devices after electrification are still satisfied thereby saving electric power and reducing heat loss in the driving coils of the electromagnetic actuating devices. 30 2 BRIEF DESCRIPTION OF THE DRAWINGS Fig. I is a circuit-block schematic view of an embodiment of the invention showing that the two electromagnetic actuating devices with individually installed driving coils are operated by the switching device 5 for opening or closing, or series or parallel connection. Fig. 2 is a circuit schematic view showing that driving coils in the embodiment of Fig. 1 are electrified to appear relatively lower impedance in a parallel connection or series and parallel connection. Fig. 3 is a circuit schematic view showing that individually installed 10 driving coils of the two electromagnetic actuating devices in the embodiment of Fig. I are electrified to a appear relatively higher impedance in a series connection or series and parallel connection. Fig. 4 is a circuit-block schematic view of the invention showing that the position detector device is installed in the electromagnetic actuating 15 device to operatively control driving coils. DESCRIPTION OF MAIN COMPONENT SYMBOLS 101 : Switching Device 102, 112 : Electromagnetic actuating device 20 103, 113 : Surge absorption device 102', 112' : Driving coil 105, 115 : Position detector device Ia, lb, Ic : Excited current 25 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention discloses an operative control circuit of multiple electromagnetic actuating devices in series and parallel connections which is through the switching device to operatively control two or more than two electromagnetic actuating devices individually 30 installed with driving coils including applications for normal close or 3 normal open type electromagnetic brakes, normal close or normal open type electromagnetic clutches, normal close or normal open type electromagnetic switches, normal close or normal open type electromagnetic relays, normal close or normal open type solenoid valves, 5 as well as magnets, electromagnetic locks, spiral tube windings or other electromagnetic actuating devices with driving coils for driven by electromagnetic actuation effects, or multi-operating type electromagnetic actuating devices which can be driven by driving coils or operated by numerous manual or mechanical power methods, wherein individually 10 installed driving coils of two or more than two electromagnetic actuating devices is operatively controlled by the switching device to actuate and be electrified to appear relatively lower impedance in parallel connection or series and parallel connection thereby causing the electromagnetic actuating device to produce a larger electromagnetic actuating power, 15 wherein after the electromagnetic actuating devices are actuated, the individually installed driving coils of the two or more than two electromagnetic actuating devices being operatively controlled by the switching device are switched to appear relatively higher impedance in series connection or series and parallel connection thereby reducing 20 currents passing through driving coils while required operating characteristics for individual electromagnetic actuating devices after electrification are still satisfied thereby saving electric power and reducing heat loss in the driving coils of the electromagnetic actuating devices. The operative control embodiment for the two electromagnetic 25 actuating devices with driving coils in series or parallel connections are described in the following: Fig. 1 is a circuit-block schematic view of an embodiment of the invention showing that the two electromagnetic actuating devices with individually installed driving coils are operated by the switching device 30 for opening or closing, or series or parallel connection, wherein it mainly 4 comprises: - A switching device (101): It is constituted by an electromechanical switch, electric relay, electromagnetic switch or a solid state switching device, operable by the manual, mechanical, fluid or electrical power for 5 being operated by the manual, mechanical, fluid or electrical power is through supplying AC or DC power to individually installed driving coils (102'), (112') of electromagnetic actuating device (102) and electromagnetic actuating device (112) to provide a switching function for electrification and power cut-off, or it is through the switchover operation 10 by the switching device (10 1) to first actuate individually installed driving coils (102'), (112') of the two electromagnetic actuating devices for electrification to appear relatively lower impedance in parallel connection or parallel and series connection for respectively passing excited currents (Ia), (Ib). Fig. 2 is a circuit schematic view showing that individually 15 installed driving coils of the two electromagnetic actuating devices in the embodiment of Fig. 1 are electrified to appear a relatively lower impedance in a parallel connection or series and parallel connection. When they are electrified in parallel connection, individually installed driving coils (102'), (112') of the two electromagnetic actuating devices 20 are then operatively controlled by the switching device (101) to be switched to appear relatively higher impedance in series connection or series and parallel connection, thereby allowing a smaller excited current (Ic) to commonly pass through driving coils (102'), (112') in series connection. Fig. 3 is a circuit schematic view showing that individually 25 installed driving coils of the two electromagnetic actuating devices in the embodiment of Fig. I are electrified to a appear relatively higher impedance in a series connection or series and parallel connection, wherein the required characteristics for electrification actuation status of individual electromagnetic actuating devices shall still be satisfied by the 30 electromagnetic actuating devices with relatively higher impedance in 5 series connection or series and parallel connection at the electrification status. The individually installed driving coils (102'), (112') of at least two electromagnetic actuating devices in parallel connection or series and 5 parallel connection to appear relatively lower impedance are operatively controlled by the switching device to be switched to the series connection or series and parallel connection to appear relatively higher impedance, wherein the switchover methods include: (1) The individually installed driving coils (102'), (112') of two or 10 more than two electromagnetic actuating devices are operatively controlled by manual-sequential operating switching device (101) for switchover in the parallel connection or series and parallel connection to appear a relatively lower impedance, or in the series connection or series and parallel connection to appear a relatively higher impedance; or 15 (2) The individually installed driving coils (102'), (112') of two or more than two electromagnetic actuating devices in parallel connection or series and parallel connection to appear a relatively lower impedance are operatively controlled by the operative switching device (10 1) with a time delay function to be switched to a series connection or series and parallel 20 connection to appear a relatively higher impedance after a time delay; or (3) By detecting current values passing through the switching device (101) to driving coils (102'), (112'), when individually installed driving coils (102'), (112') of two or more than two electromagnetic actuating devices are electrified to actuate excited current value setting 25 current value, or 2 the status of setting current value status exceeding over setting time, the switching device (101) is driven to operatively control driving coils (102'), (112') in series connection or series and parallel connection to appear a relatively higher impedance; or (4) The switching device (101) is operatively controlled by two or 30 more than two methods of the above said (1)(2)(3); 6 -- The electromagnetic actuating devices (102), (112): They are constituted by conventional devices structures with individually installed AC or DC powered driving coils (102'), (112') such as normal close or normal open type electromagnetic brakes, normal close or normal open 5 type electromagnetic clutches, normal close or normal open type electromagnetic switches, normal close or normal open type electromagnetic relays, normal close or normal open type solenoid valves, etc. as well as magnets, electromagnetic locks, spiral tube windings or other electromagnetic actuating devices with driving coils for driven by 10 electromagnetic actuation effects, or multi-operating type electromagnetic actuating devices which can be driven by driving coils or operated by numerous manual or mechanical power methods; wherein the driving coil (102') of the electromagnetic actuating device (102) and the driving coil (112') of the electromagnetic actuating device (112) to appear a relatively 15 lower impedance in a parallel connection or series and parallel connection being operatively controlled by the switching device (101) for electrification is switched to appear relatively higher impedance in series connection or series and parallel connection thereby saving electric power and reducing heat generation, while the required characteristics for 20 electrification actuation status of individual electromagnetic actuating devices (102), (112) shall still be satisfied by the individually installed driving coils (102'), (112') of electromagnetic actuating devices (102), (112) with relatively higher impedance in series connection or series and parallel connection at the electrification status. 25 Said individual driving coils (102'), (112') can be optionally constituted by conducting wires of the same or different material or the same or different conduction cross-section areas, or constituted by windings with the same or different numbers of coils; - The surge absorption devices (103), (113): The AC or DC surge 30 absorption devices being optionally installed according to specifications 7 of electromagnetic actuating devices are respectively parallel connected with driving coils (102'), (112') to help absorbing the produced inductance of counter-electric potential in driving coils (102'), (112') when driving coils (102'), (112') are operated by the switching device 5 (101) to open or close, or to appear relatively lower impedance in parallel connection or series and parallel connection, or to be switched to relatively higher impedance in series connection or series and parallel connection, wherein the surge absorption device is constituted by the following: (1) When driving coils (102'), (112') are powered by AC 10 power, AC surge absorption device (103) is installed, such as that it can be constituted by a bipolar solid state varistor, or constituted by at least two kinds of components of the resistors, inductors, bipolar capacitors in series connection, parallel connection or series and parallel connection, or constituted by the bipolar capacitor alone, or constituted by other 15 conventional AC surge absorption circuit devices; (2) When driving coils (102'),(112') are powered by lower voltage DC power, DC surge absorption device (113) is installed, such as that it can be constituted by reverse polarity diodes in parallel connection to appear a flywheel diode with energy storage effect, or constituted by at least two kinds of 20 components of the resistors, inductors, uni-polar or bipolar capacitors, or constituted by the uni-polar or bipolar capacitor alone, or constituted by the solid state varistor or other conventional DC surge absorption devices; wherein this device can be optionally installed or not installed as required. In practical applications, driving coils of the individual 25 electromagnetic devices of the operative control circuit of multiple electromagnetic actuating devices in series and parallel connections include the following: (1) It is constituted by driving coils with the same or different electromechanical characteristics; 30 (2) The driving coil of the individual electromagnetic actuating 8 device is one set in ordinary status and can also be two or more than two sets as needed; (3) When the individual electromagnetic actuating device has two or more than two sets of driving coils, they can be operatively controlled 5 by a switching device (101) to switch between the series and parallel connections, and further to switch between series and parallel connections with driving coils of other electromagnetic actuating devices. For the operative control circuit of multiple electromagnetic actuating devices in series and parallel connections, the methods for at least two 10 driving coils (102'), (112') to appear relatively lower impedance in parallel connection or series and parallel connection being switched to appear relatively higher impedance in series connection or series and parallel connection further include such as that Fig. 4 is a circuit-block schematic view of the invention showing that the position detector device 15 is installed in the electromagnetic actuating device to operatively control driving coils, and it includes: (1) The position of the rotor and stator of one of the electromagnetic actuating devices after electrification, or the selected position during the actuating process is individually installed with a 20 position detector device (105), wherein after exciting coils (102'), (112') of the electromagnetic actuating devices being switched to appear relatively lower impedance in parallel connection or series and parallel connection are electrified, the normal electrification of the rotor and stator of their belonging electromagnetic actuating device is detected by the 25 position detector device (105) of one of the individual electromagnetic actuating devices to directly switch the said exciting coils (102'), (112') of the two or more than two electromagnetic actuating devices from relatively lower impedance in parallel connection or series and parallel connection to relatively higher impedance in series connection or series 30 and parallel connection; or the normal electrification of the rotor and 9 stator of their belonging electromagnetic actuating device is detected by the position detector device (105) of one of the individual electromagnetic actuating devices to operatively control a switching device (101), and further through the switching device (101) to operatively control the 5 individually installed exciting coils (102'), (112') of two or more than two electromagnetic actuating devices from relatively lower impedance in parallel connection or series and parallel connection to relatively higher impedance in series connection or series and parallel connection; (2) The positions of the rotors and stators of two or more than two 10 electromagnetic actuating devices after electrification, or the selected positions during the actuating process are individually installed with the position detector devices (105), (115) wherein after exciting coils (102'), (112') of the electromagnetic actuating devices being switched to appear relatively lower impedance in parallel connection or series and parallel 15 connection are electrified, and further through the interactive operative controls between the individually installed position detector devices (105), (115), the normal electrification of the rotors and stators of their belonging electromagnetic actuating devices are detected by all of the individually installed position detector devices (105), (115) to directly switch the 20 individually installed exciting coils (102'), (112') of the two or more than two electromagnetic actuating devices from relatively lower impedance in parallel connection or series and parallel connection to relatively higher impedance in series connection or series and parallel connection; or the normal electrifications of the rotors and stators of their belonging 25 electromagnetic actuating devices are detected by all of the individually installed position detector devices (105), (115) to operatively control a switching device (101), and further through the switching device (101) to operatively control the individually installed exciting coils (102'), (112') of the two or more than two electromagnetic actuating devices from 30 relatively lower impedance in parallel connection or series and parallel 10 connection to relatively higher impedance in series connection or series and parallel connection; The position detector devices (105), (115) can be constituted by pressure sensing type electromechanical switching devices or 5 pressure-actuating spring leaf type switches, or can be constituted by optical, electromagnetic inducing type, capacitive inducing type or other conventional position sensing devices, wherein this device can be optionally installed or not installed as required. As summarized from the above descriptions, the operative control 10 circuit of multiple electromagnetic actuating devices in series and parallel connection, wherein it is characterized in that the installed driving coils of the two or more than two individual electromagnetic actuating devices can be electrified to appear relatively lower impedance in a parallel connection or series and parallel connection so as to allow 15 electromagnetic driving device to obtain the larger actuating power and response characteristics, and further through operative control on the switching device to switch the installed driving coils of the two or more than two electromagnetic actuating devices to appear a relatively higher impedance electrification status in a series connection or series and 20 parallel connection thereby ensuring the electromagnetic actuating devices to appear electrification after actuation as well as saving electric power and reducing heat generation. The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and 25 should not be taken as, an acknowledgement or admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this specification relates. Throughout this specification and the claims which follow, unless 30 the context requires otherwise, the word "comprise", and variations such

II

as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps. The reference numerals in the following claims do not in any way 5 limit the scope of the respective claims. 12

Claims

1. An operative control circuit of multiple electromagnetic actuating devices in series and parallel connection, wherein individually installed driving coils of two or more than two electromagnetic actuating devices is 5 operatively controlled by the switching device to actuate and be electrified to appear relatively lower impedance in parallel connection or series and parallel connection thereby producing a larger electromagnetic actuating power, wherein after the electromagnetic actuating devices are actuated, the individually installed driving coils of the two or more than two 10 electromagnetic actuating devices being operatively controlled by a switching device is switched to appear relatively higher impedance in series connection or series and parallel connection thereby reducing currents passing through driving coils while required operating characteristics for individual electromagnetic actuating devices after 15 electrification are still satisfied thereby saving electric power and reducing heat loss in the driving coils of the electromagnetic actuating devices; wherein it mainly comprises: - A switching device (101): It is constituted by an electromechanical switch, electric relay, electromagnetic switch or a solid state 20 switching device, operable by the manual, mechanical, fluid or electrical power for being operated by the manual, mechanical, fluid or electrical power is through supplying AC or DC power to individually installed driving coils (102'), (112') of electromagnetic actuating device (102) and electromagnetic actuating device (112) to 25 provide a switching function for electrification and power cut-off, or it is through the switchover operation by the switching device (101) to first actuate individually installed driving coils (102'), (112') of the two electromagnetic actuating devices for electrification to appear relatively lower impedance in parallel connection or parallel 30 and series connection for respectively passing excited currents (Ia), 13 (Ib). When they are electrified in parallel connection, individually installed driving coils (102'), (112') of the two electromagnetic actuating devices are then operatively controlled by the switching device (101) to be switched to appear relatively higher impedance in 5 series connection or series and parallel connection, thereby allowing a smaller excited current (Ic) to commonly pass through driving coils (102'), (112') in series connection. The required characteristics for electrification actuation status of individual electromagnetic actuating devices shall still be satisfied by the electromagnetic 10 actuating devices with relatively higher impedance in series connection or series and parallel connection at the electrification status. - The electromagnetic actuating devices (102), (112): They are constituted by electromagnetic actuating devices with individually 15 installed AC or DC powered driving coils (102'), (112') for driven by electromagnetic actuation effects, or multi-operating type electromagnetic actuating devices which can be driven by driving coils or operated by numerous manual or mechanical power methods; wherein the driving coil (102') of the electromagnetic actuating 20 device (102) and the driving coil (112') of the electromagnetic actuating device (112) to appear a relatively lower impedance in a parallel connection or series and parallel connection being operatively controlled by the switching device (101) for electrification is switched to appear relatively higher impedance in 25 series connection or series and parallel connection thereby saving electric power and reducing heat generation, while the required characteristics for electrification actuation status of individual electromagnetic actuating devices (102), (112) shall still be satisfied by the individually installed driving coils (102'), (112') of 30 electromagnetic actuating devices (102), (112) with relatively higher 14 impedance in series connection or series and parallel connection at the electrification status.

2. The operative control circuit of multiple electromagnetic actuating 5 devices in series and parallel connection as claimed in claim 1, wherein individually installed driving coils (102'), (112') of at least two electromagnetic actuating devices in parallel connection or series and parallel connection to appear relatively lower impedance are operatively controlled by the switching device to be switched to the series connection 10 or series and parallel connection to appear relatively higher impedance, wherein the switchover methods include: (1) The individually installed driving coils (102'), (112') of two or more than two electromagnetic actuating devices are operatively controlled by manual-sequential operating switching device 15 (101) for switchover in the parallel connection or series and parallel connection to appear a relatively lower impedance, or in the series connection or series and parallel connection to appear a relatively higher impedance; or (2) The individually installed driving coils (102'), (112') of two or 20 more than two electromagnetic actuating devices in parallel connection or series and parallel connection to appear a relatively lower impedance are operatively controlled by the operative switching device (101) with a time delay function to be switched to a series connection or series and parallel 25 connection to appear a relatively higher impedance after a time delay; or (3) By detecting current values passing through the switching device (101) to driving coils (102'), (112'), when individually installed driving coils (102'), (112') of two or more than two 30 electromagnetic actuating devices are electrified to actuate 15 excited current value D setting current value, or 0 the status of setting current value status exceeding over setting time, the switching device (101) is driven to operatively control driving coils (102'), (112') in series connection or series and parallel 5 connection to appear a relatively higher impedance; or (4) The switching device (101) is operatively controlled by two or more than two methods of the above said (1)(2)(3);

3. The operative control circuit of multiple electromagnetic actuating devices in series and parallel connection as claimed in claim 1, wherein 10 individual driving coils (102'), (112') can be optionally constituted by conducting wires of the same or different material, or the same or different conduction cross-section areas, or constituted by windings with the same or different number of coils.

4. The operative control circuit of multiple electromagnetic actuating 15 devices in series and parallel connection as claimed in claim 1, wherein driving coils of the individual electromagnetic driving devices are constituted by driving coils with the same or different electromechanical characteristics.

5. The driving coils of individual electromagnetic driving device in the 20 operative control circuit of multiple electromagnetic actuating devices in series and parallel connection as claimed in claim 1, wherein the number of driving coils of each individual electromagnetic actuating device is one set in ordinary condition, or it can be two or more than two sets as required. 25

6. The driving coils of the individual electromagnetic driving devices in the operative control circuit of multiple electromagnetic actuating devices in series and parallel connection, wherein when the individual electromagnetic actuating device has two or more than two sets of driving coils, they can be operatively controlled by a switching device (101) to 30 switch between the series and parallel connections, and further to switch 16 between series and parallel connections with driving coils of other electromagnetic actuating devices.

7. The operative control circuit of multiple electromagnetic actuating devices in series and parallel connection as claimed in claim 1, wherein 5 the methods for at least two driving coils (102'), (112') to appear relatively lower impedance in parallel connection or series and parallel connection being switched to appear relatively higher impedance in series connection or series and parallel connection further include the following: the position of the rotor and stator of one of the electromagnetic actuating 10 devices after electrification, or the selected position during the actuating process is individually installed with a position detector device (105), wherein after exciting coils (102'), (112') of the electromagnetic actuating devices being switched to appear lower impedance in parallel connection or series and parallel connection are electrified, the normal electrification 15 of the rotor and stator of their belonging electromagnetic actuating device is detected by the position detector device (105) of one of the individual electromagnetic actuating devices to directly switch the said exciting coils (102'), (112') of the two or more than two electromagnetic actuating devices from relatively lower impedance in parallel connection or series 20 and parallel connection to relatively higher impedance in series connection or series and parallel connection; or the normal electrification of the rotor and stator of their belonging electromagnetic actuating device is detected by the position detector device (105) of one of the individual electromagnetic actuating devices to operatively control a switching 25 device (101), and further through the switching device (101) to operatively control the individually installed exciting coils (102'), (112') of the two or more than two electromagnetic actuating devices from relatively lower impedance in parallel connection or series and parallel connection to relatively higher impedance in series connection or series 30 and parallel connection; wherein this device can be optionally installed or 17 not installed as required.

8. The operative control circuit of multiple electromagnetic actuating devices in series and parallel connection as claimed in claim 1, wherein the methods for at least two driving coils (102'), (112') to appear 5 relatively lower impedance in parallel connection or series and parallel connection being switched to appear relatively higher impedance in series connection or series and parallel connection further include the following: the positions of the rotors and stators of two or more than two electromagnetic actuating devices after electrification, or the selected 10 positions during the actuating process are individually installed with the position detector devices (105), (115) wherein after exciting coils (102'), (112') of the electromagnetic actuating devices being switched to appear relatively lower impedance in parallel connection or series and parallel connection are electrified, the normal electrification of the rotors and 15 stators of their belonging electromagnetic actuating devices are detected by all of the individually installed position detector devices (105), (115) to directly switch the individually installed exciting coils (102'), (112') of the two or more than two electromagnetic actuating devices from relatively lower impedance in parallel connection or series and parallel 20 connection to relatively higher impedance in series connection or series and parallel connection; or the normal electrifications of the rotors and stators of their belonging electromagnetic actuating devices are detected by all of the individually installed position detector devices (105), (115) to operatively control a switching device (101), and further through the 25 switching device (101) to operatively control the individually installed exciting coils (102'), (112') of the two or more than two electromagnetic actuating devices from relatively lower impedance in parallel connection or series and parallel connection to relatively higher impedance in series connection or series and parallel connection; wherein this device can be 30 optionally installed or not installed as required. 18

9. The operative control circuit of multiple electromagnetic actuating devices in series connection or series and parallel connection as claimed in claims 7 and 8, wherein position detector devices (105), (115) can be constituted by pressure sensing type electromechanical switching devices 5 or pressure-actuating spring leaf type switches, or can be constituted by optical, electromagnetic inducing type, capacitive inducing type or other conventional sensing devices.

10. The operative control circuit of multiple electromagnetic actuating devices in series and parallel connection as claimed in claim 1, wherein 10 the AC or DC surge absorption devices being optionally installed according to specifications of electromagnetic actuating devices are respectively parallel connected with driving coils (102'), (112') to help absorbing the produced inductance of counter-electric potential in driving coils (102'), (112') when driving coils (102'), (112') are operated by the 15 switching device (101) to open or close, or to appear relatively lower impedance in parallel connection or series and parallel connection, or to be switched to relatively higher impedance in series connection or series and parallel connection, wherein the surge absorption device is constituted by the following: (1) When driving coils (102'), (112') are powered by 20 AC power, AC surge absorption device (103) is installed, such as that it can be constituted by a bipolar solid state varistor, or constituted by at least two kinds of components of the resistors, inductors, bipolar capacitors in series connection or series and parallel connection, or constituted by the bipolar capacitor alone, or constituted by other 25 conventional AC surge absorption circuit devices; (2) When driving coils (102'),(112') are powered by lower voltage DC power, DC surge absorption device (113) is installed, such as that it can be constituted by reverse polarity diodes in parallel connection to appear a flywheel diode with energy storage effect, or constituted by at least two kinds of 30 components of the resistors, inductors, uni-polar or bipolar capacitors, or 19 constituted by the uni-polar or bipolar capacitor alone, or constituted by the solid state varistor or other conventional DC surge absorption devices; wherein this device can be optionally installed or not installed as required.

11. The operative control circuit of multiple electromagnetic actuating 5 devices in series and parallel connection as claimed in claim 1, wherein the individual electromagnetic actuating device with driving coils includes the applications for such as normal close or normal open type electromagnetic brakes, normal close or normal open type electromagnetic clutches, normal close or normal open type electromagnetic switches, 10 normal close or normal open type electromagnetic relays, normal close or normal open type solenoid valves, etc. as well as magnets, electromagnetic locks, spiral tube windings or other electromagnetic actuating devices with driving coils for electromagnetic driving effects, or multi-operating type electromagnetic actuating devices which can be 15 driven by driving coils or operated by numerous manual or mechanical power methods.

12. An operative control circuit of multiple electromagnetic actuating devices in series and parallel connection, substantially as herein described with reference to the accompanying drawings. 20