US2438535A - Electric circuit - Google Patents

Electric circuit Download PDF

Info

Publication number
US2438535A
US2438535A US607121A US60712145A US2438535A US 2438535 A US2438535 A US 2438535A US 607121 A US607121 A US 607121A US 60712145 A US60712145 A US 60712145A US 2438535 A US2438535 A US 2438535A
Authority
US
United States
Prior art keywords
circuit
switch
contacts
coil
translating device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US607121A
Other languages
English (en)
Inventor
Bruns William Henry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otis Elevator Co
Original Assignee
Otis Elevator Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otis Elevator Co filed Critical Otis Elevator Co
Priority to US607121A priority Critical patent/US2438535A/en
Application granted granted Critical
Publication of US2438535A publication Critical patent/US2438535A/en
Priority to JP51451A priority patent/JPS283771B1/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits

Definitions

  • the object of the invention is to control a plurality of interrelated circuits in a desired manner with a minimum number of contacts or other circuit controlling means such as electronic tubes.
  • the invention involves connecting circuit controlling means for one circuit through unidirectional current conducting means to control another circuit and is applicable to circuits having direct current supply or to those in which direct current is caused to flow in the particular circuits involved as when they are controlled by electronic tubes as switches.
  • the invention is of especial utility in low power circuits.
  • FIGS la, 2a, 3a, 4a, 5a and 6a are simplified wiring diagrams of various known circuit arrangements in which separate pairs of contacts of an electromagnetic switch are utilized to control separate circuits;
  • Figures 1b, 2b, 3 4b, 5b and 6b are simplified wiring diagrams, respectively corresponding to Figures 1a. 2a, 3a, 4a, 5a and 6a, in which a single pair of contacts of an electromagnetic switch serves to control the separate circuits in accordance with the invention;
  • Figure 7a is a simplified wiring diagram of a circuit arrangement under electronic tube control in which separate tubes are utilized to control separate circuits
  • Figure 7b is a simplified wiring diagram corresponding to Figure 7a in which a single electronic tube serves to control the separate circuits in accordance with the in ention.
  • a and B are electromagnetic switches having contacts for controlling electric circuits.
  • the contacts of switch A are designated Al and A2 and those of switch B are designated BI and B2.
  • the operating coils of these switches may be controlled in any desired manner.
  • C, D and E are electromagnetic switches having their operating coils in the circuits controlled by switches A and B, as illustrative of translating devices subject to the control of switches A and B. All electromagnetic switches are illustrated in deenergized condition.
  • the circuits are arranged so that the operation of switch A to engage contacts Al and A2 completes circuits for the coils of switches C and D, whereas the operation of switch B to engage contacts Bi completes a circuit for only the coil of switch D.
  • FIG 1b the same operation is provided as in Figure 1a except that a single pair of contacts on switch A, namely contacts AI, control both the coil of switch C and the coil of switch D.
  • Contacts AI are connected to the coil of switch D through a rectifier R. This enables current to'pass from contacts Al to the coil of switch D but not from contacts Bl to the coil of switch C.
  • the contacts on switches A and B may be breaking contacts instead of making contacts. Such an arrangement is illustrated in Figure 2a. With this arrangement, upon the operation of switch A the separation of contacts Al deenergizes the coil of switch C but the separation of contacts A2 does not deenergize the coil of switch D unless switch B also is operated to separate contacts Bl.
  • a single pair of contacts on switch A namely contacts Al, controls both the coil of switch 0 and the coil of switch D while providing the same operation as is had in Figure 2a.
  • Contacts Al are connected to the coil of switch D through a rectifier R.
  • Contacts Bl cannot prevent the deenergization of the coil of switch C upon the operation of switch A inasmuch as the rectifier blocks the flow of current through contacts Bi to the coil of switch C.
  • Contacts B2 are additional making contacts on switch B (or controlling the circuit for the coil oi switch C.
  • a switch Y is provided for rendering the coil or switch C subject to either contacts Al or contacts B2.
  • the same operation is had in Figure 3b utilizing only one pair of contacts on each oi switches A and B.
  • Contacts Al and B2 control the circuits for the coils of both switches C and D, switch Y determining whether the coil oi switch C is subject to contacts Al or contacts B2.
  • Rectifier RI blocks the control of the coil or switch C by contacts B! when switch Y is in position to render this coil subject to contacts Al while rectifier R! blocks the control of the coil of switch C by contacts Al when switch Y is in the other position.
  • switch A is provided with making contacts Al for controlling the coil of switch C and with breaking contacts A2 for controlling the coil of switch D.
  • the arrangement is such that upon the operation of switch A a circuit is completed for the coil of switch C to cause this switch to operate, whereas the circuit for the coil oi switch D is broken causing this switch to drop out.
  • the same operation is had in the circuit arrangement oi Figure 4b utilizing onl one pair of contacts on switch A, namely making contacts Al. These contacts control the circuit for the coil of switch C in the same way as in Figure 411, whereas they establish a short circuit for the coil of switch D through rectifier R.
  • X is a resistance which enables switch D to be operated when switch A is not operated but obviates a short circuit on the line when switch A is operated.
  • the rectifier blocks the flow of current irom line through the coil or switch D and thence through the coil of switch C.
  • a circuit arrangement is illustrated in Figure 6a in which making contacts Al and BI of switches A and B respectively are arranged in series to control the energization of the coil of switch D. Contacts Al are also utilized for conin which the circuits are controlled by other types of switching arrangements or by other circuit controlling devices such as electronic tubes.
  • a circuit arrangement utilizing electronic tube control in which separate tubes are provided to control separate circuits is illustrated in Figure 7a.
  • ETI. ET! and ET! are gas tubes, each 01' which has an anode AN. cathode CA and starting electrode BE as designated for tube ETI.
  • B is a source of alternating current for applying alternating current voltage to the supply lines.
  • the controlled translating devices are illustrated as before as the coils of electromagnetic switches C and D.
  • the coil of switch C is subject to the control oi.electronic tube ETI while the coil of switch D is subject to the control of electronic tubes ET! and ETI, the anode-cathode circuits or which are connected in parallel.
  • the starting electrodes of tubes ETI and ET! could be connected together and subject to voltage controlling means to raise the potential 0! their startingelectrodes with respect to their cathodes sufflciently to fire the tubes.
  • the starting electrode of tube ET3 could be similarly subject to voltage controlling means to raise its potential with respect to the cathode of tube ET3 sufiiciently to fire the tube.
  • Switch B is provided with making contacts B! for controlling the energization of the coil of switch E.
  • the same operation is had in the circuit arrangement of Figure 6b utilizing only contacts Al and B! by connecting the coil of switch D through rectifier R to be subject to contacts AI and B2.
  • the rectifier blocks the energization of the coils of switches E, D and C in series, thus enabling the same control of switches C, D and E to be had with only one pair 01 contacts on switch B as well as on switchA.
  • circuit arrangements have been described in which the circuits are controlled by contacts of electromagnetic switches.
  • the invention is also applicable to circuit arrangements tubes ETI and ET! sumcient voltage is applied to the coils of switches C and D to cause these switches to operate.
  • the firing of tube ET3 instead oi tubes ETI and ET! causes sufilcient voltage to be applied only to the coil of switch D to cause this switch to operate.
  • tube ET! is omitted and tube ETI is utilized to control both switches C and D.
  • Tube ETI is connected to the coil of switch D through rectifier R. This enables current to pass through tube ETI to the coil of switch D but not through tube ET3 to the coil of switch C.
  • both switches C and D are operated upon the firing of tube ETI both switches C and D are operated.
  • the firing oi tube ET3 causes only switch D to operate, the rectifier R blocking the energization of the coil of switch C by tube ET3.
  • a source of current a translating device; a circuit for connecting said translating device to said source; circuit controlling means in said circuit; a second translating device; a second circuit for connecting said second translating device to said source; circuit controlling means in said second circuit; a third circuit connecting the first and second mentioned circuits at points in said circuits to enable the control of said second translating device by the first mentioned circuit controlling means; and unidirectional current conducting means in said third circuit to block the control of said first mentioned translating device by the second mentioned circuit controlling means.
  • a source of current a translating device; a circuit for connecting said translatin device to said source; circuit controlling means in said circuit between said translating device and one side of said source; a second translating device; a second circuit for connecting said second translating device to said source; circuit controlling means in said second circuit between said second translating device and said one side of said source; a third circuit for connecting said second translating device through the first mentioned circuit controlling means to said one side of said source, paralleling the connection thereto through the second mentioned circuit controlling means; and unidirectional current conducting means in said third circuit to permit the flow of current to said second translating device through said first mentioned circuit controlling means but to block the fiow of current from said second circuit to said first mentioned translating device.
  • translating device a circuit for connecting said translating device to said source; circuit controlling means operable to connect one side' oi said circuit to one side 0! said source; a second translating device; a second circuit for connecting said second translating device to said source; additional circuit controlling means operable to connect one side of said second circuit to said one side of said source; a third circuit for connecting said second translating device through the first mentioned circuit controlling means to said one side of said source, paralleling the connection thereto through said second circuit controlling means; and unidirectional current conducting means in said third circuit to permit the fiow or current to said second translating device through said first mentioned circuit controlling means but to block the fiow of current irom said second circuit to said first mentioned translating device.
  • a source of current a translating device; a circuit for connecting said translating device to said source; circuit controlling means in said circuit between said translating device and one side of said source; a second translating device; a second circuit for connecting said second translating device to said source; resistance in said second circuit between said second translating device and the other side of said source; a third circuit connecting a point in the first mentioned circuit between the first mentioned translating device and the firs mentioned circuit controlling means with a point in the second circuit between said resistance and said second translating device; and unidirectional current conducting means in said third circuit to permit the fiow of current from said first mentioned circuit to said second circuit but to block the fiow of current from said second circuit to said first mentioned circuit.
  • a source of current a translating device; a circuit for connecting said translating device to said source; a second circuit for connecting said translating device to said source; a switch for connecting said translating device in either of said circuits; circuit controlling means operable to connect one side 01' the first mentioned circuit to one side of said source; additional circuit controlling means operable to connect one side of said second circuit to said one side of said source; a second translating device; a third circuit for connecting said second translating device to said source either by a path through the first mentioned circuit controlling means or by a path through said additional circuit controlling means; and unidirectional cur rent conducting means in each of said paths to permit the flow of current to said second translating device through either of said circuit controlling means but to block the fiow of current through said first mentioned circuit controlling means to the first mentioned translating device When such device is connected by said switch in said second circuit or through said additional circuit controlling means to said first mentioned translating device when such device is connected by said switch in said first mentioned circuit.
  • a source of current a translating device; a circuit for connecting said translating device to said source circuit controlling means operable to connect one side of said circuit to one side of said source; a second translating device; a second circuit for connecting said second translating device to said source; additional circuit controlling means operable to conmasses 7 nect one side of said second circuit to the other side of said source; a third translating device; a third circuit for connecting one side of said third translating device'to said one side of said source through the 'firstmentioned circuit controllin means and the other side to said other side of said source through said additional circuit controlling means; and unidirectional current conducting means in said third circuit to permit the flow or current to said third translating device 10 Number through said first mentioned circuit controlling means but to block the flow oi! current from said 8 second circuit to said first mentioned translating device.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
US607121A 1945-07-26 1945-07-26 Electric circuit Expired - Lifetime US2438535A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US607121A US2438535A (en) 1945-07-26 1945-07-26 Electric circuit
JP51451A JPS283771B1 (enrdf_load_stackoverflow) 1945-07-26 1951-01-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US607121A US2438535A (en) 1945-07-26 1945-07-26 Electric circuit

Publications (1)

Publication Number Publication Date
US2438535A true US2438535A (en) 1948-03-30

Family

ID=24430913

Family Applications (1)

Application Number Title Priority Date Filing Date
US607121A Expired - Lifetime US2438535A (en) 1945-07-26 1945-07-26 Electric circuit

Country Status (2)

Country Link
US (1) US2438535A (enrdf_load_stackoverflow)
JP (1) JPS283771B1 (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182119A (en) * 1936-10-07 1939-12-05 Cie Telephones Thomson Houston Remote control system
US2232070A (en) * 1939-09-30 1941-02-18 Rca Corp Alternating-current direct-current rectifier circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2182119A (en) * 1936-10-07 1939-12-05 Cie Telephones Thomson Houston Remote control system
US2232070A (en) * 1939-09-30 1941-02-18 Rca Corp Alternating-current direct-current rectifier circuit

Also Published As

Publication number Publication date
JPS283771B1 (enrdf_load_stackoverflow) 1953-08-07

Similar Documents

Publication Publication Date Title
US2057531A (en) Electric indicating system
US2282182A (en) Amplifier circuit
US5118963A (en) Symmetrical controlled switching circuit
JPH053172B2 (enrdf_load_stackoverflow)
US2438535A (en) Electric circuit
US3262045A (en) Regulated d.c. power supply
US2474867A (en) Protective system for three-phase single-phase machines
US2207577A (en) Electric protective system
US2368477A (en) Electric time delay relay
US2361845A (en) Electric valve circuit
US2909705A (en) Control circuit
US2322560A (en) Safety system
US2431237A (en) Control circuit
US2372106A (en) Circuit control system
US2785346A (en) Interval timer
US2356589A (en) Electric valve circuits
US2415654A (en) Selective indication apparatus
US2788517A (en) Remote control system
US3040224A (en) Switching circuit for controlling shaker table motor
USRE20335E (en) Electric valve translating circuit
US2428723A (en) Electric motor torque controller
US2132277A (en) Control system
US2050882A (en) Automatic circuit breaker system
US2190523A (en) Electric valve converting system
US1435255A (en) Change-over switch