47results about "Spark gap circuits" patented technology

The invention relates to an ignition device (100) for a spark gap arrangement (200) comprising at least one first and one second ignition capacitor (C1, C2) for voltage division between a first and a second electrode of the spark gap arrangement, a first trigger spark gap (Tgr1) arranged in a first parallel branch to the first ignition capacitor, and a second trigger spark gap (Tgr2) arranged in a second parallel branch to the second ignition capacitor. The invention is characterized in that a first ignition resistor (P1b) is provided in the first parallel branch, wherein a first potential point (101) between the first ignition resistor and the first trigger spark gap is connected to an ignition electrode (ZE2) of the second trigger spark gap.The invention further relates to a spark gap arrangement with the ignition device, an arrangement with a high-voltage device and the spark gap arrangement for protecting the high-voltage device, and a method for igniting the spark gap arrangement.

An ignition coil assembly with internal diagnostic features that can be used to monitor and evaluate different aspects of an ignition system and provide continuous feedback. The ignition coil assembly may be a coil-on-plug type device that converts low-voltage battery power into high-voltage ignition pulses, and may include several input terminals, an ignition coil with primary and secondary windings, ignition circuitry, an output terminal, a spark plug connector, and a housing. The ignition circuitry includes an ignition operational circuit and an ignition diagnostic circuit, which in turn has a charging evaluation circuit for monitoring a charging phase, a discharging evaluation circuit for monitoring a discharging phase, and a feedback integration circuit for combining outputs into a multiplexed digital signal that can then be sent to an engine control unit (ECU) or the like over a single output terminal.

The invention provides a spark discharge device and a spark discharge accurate control method, and relates to the technical field of spark discharge. The device comprises a pair of spark electrodes, a rotary switch, a capacitor and a power supply, wherein a gap exists between working ends of the spark electrodes; the spark electrode, the rotary switch and the capacitor are connected in series to form a discharging loop, and the capacitor and the power supply are connected in series to form a charging loop; the rotary switch comprises a rotatable rotor and a toothed bar connected with the rotor; a contact is arranged in the discharge loop, and when the contact is in contact with the toothed bar, the discharge loop is conducted. According to the invention, the discharge loop is rapidly switched on and switched off through the rotary switch, various parameters of spark discharge can be accurately and stably controlled, so that the spark discharge is not influenced by the environment, such as spark breakdown voltage, discharge frequency and the like, and the spark discharge can be prevented from being converted into corona, glow or arc discharge, for example, the spark discharge can be normally generated under low air pressure.

An ignition coil assembly with internal diagnostic features that can be used to monitor and evaluate different aspects of an ignition system and provide continuous feedback. The ignition coil assembly may be a coil-on-plug type device that converts low-voltage battery power into high-voltage ignition pulses, and may include several input terminals, an ignition coil with primary and secondary windings, ignition circuitry, an output terminal, a spark plug connector, and a housing. The ignition circuitry includes an ignition operational circuit and an ignition diagnostic circuit, which in turn has a charging evaluation circuit for monitoring a charging phase, a discharging evaluation circuit for monitoring a discharging phase, and a feedback integration circuit for combining outputs into a multiplexed digital signal that can then be sent to an engine control unit (ECU) or the like over a single output terminal.

A driver circuit, including: a transistor including a ground side electrode, a control electrode, and a power supply side electrode for an inductive load to be connected thereto; a first resistor connected to the control electrode; a line connected to the first resistor; a second resistor provided between the line and a ground; a first diode, including a cathode connected to the line and an anode, the first diode being connected in parallel with the second resistor; and a second diode including a cathode connected to the line, and an anode for connecting to a capacitor, thereby receiving a voltage generated in the capacitor for driving the transistor.

An ignition coil includes a joint part that is formed of a tubular elastic body. The join part has a distal end mounted to an ignition plug arranged in a plug hole having a bend, and a proximal end mounted to a coil main body part arranged at a proximal-side entrance part of the plug hole which has a greater inner diameter than the bend. On an outer circumferential surface of a main tubular portion opposed to the bend, there are formed first ribs each extending along an axis of the joint part. On an outer circumferential surface of a proximal-side tubular portion, there are formed second ribs each extending along the axis of the joint part. When viewed along the axis of the joint part, a maximum value of a first rib diameter and a maximum value of a second rib diameter satisfy the relationship of d2 > d1.

An ignition coil system includes an ignition coil including a first primary coil, a second primary coil, and a secondary coil, and configured to generate a discharge current by electromagnetic induction with the first primary coil or the second primary coil, a first battery electrically connected to the first primary coil, a second battery electrically connected to the second primary coil, a first battery switch provided between the first primary coil and the first battery, and configured to block electrical power supplied from the first battery to the first primary coil, a second battery switch provided between the second primary coil and the second battery, and configured to block electrical power supplied from the second battery to the second primary coil, a first switch configured to adjust charging and discharging of the first primary coil, and a second switch configured to adjust charging and discharging of the second primary coil.

An ignition coil assembly with internal diagnostic features that can be used to monitor and evaluate various aspects of an ignition system and provide continuous feedback. The ignition coil assembly can be a coil-on-plug type device that converts low-voltage battery current into high-voltage ignition pulses, and it can include multiple input terminals, an ignition coil with primary and secondary windings, an ignition circuit, an output terminal, a spark plug connector, and a housing.The ignition circuit includes an ignition operating circuit and an ignition diagnostic circuit, which in turn includes a charge evaluation circuit for monitoring a charging phase, a discharge evaluation circuit for monitoring a discharge phase, and a feedback integration circuit for combining outputs into a multiplexed digital signal, which can then be sent via a single output connection to an engine control unit (ECU) or the like.

To provide a drive circuit capable of preventing malfunction of a transistor that drives a load.SOLUTION: A drive circuit includes: a transistor having a power source side electrode to which an inductive load is connected, a ground side electrode and a control electrode; a first resistor connected to the control electrode; a line connected to the first resistor; a second resistor provided between the line and a ground; a first diode that has a cathode connected to the line and an anode and is connected in parallel with the second resistor; and a second diode having a cathode connected to the line and an anode. A capacitor in which a voltage for driving the transistor is generated is connected to the anode of the second diode.SELECTED DRAWING: Figure 3

A short-circuiting device (14) comprises a triggering circuit (16), an actuating element (30), a stationary electrode (20) and a moveable electrode (22), where the actuating element (30) is moveable between a first retracted position and a first extended position and joined to the moveable electrode (22) for being moved between a corresponding second retracted position, where there is gap of a first distance between the moveable and stationary electrodes (22, 20), and a second extended position, where the gap has a second lower distance, the triggering circuit (16) being configured to trigger a current to start to flow between the electrodes (20, 22) after the actuating element (30) has been actuated to move from the first retracted position and before reaching the first extended position and the current continues to flow in the gap after a first zero crossing and at least until a second zero-crossing.

A method for delivering a spark to a machine, comprising the following: Supplying two different ignition coil charging current times over a single conductor, wherein the two different ignition coil charging current times are supplied to a first ignition coil (206) and a second ignition coil (208), and Discharge of the first ignition coil (206) and the second ignition coil (208) to a single spark plug (92).

A surge arrester comprising: - an electrically insulating base body (GK) enclosing a cavity, - a first and a second electrode (A,B) arranged at a distance ab from each other in the cavity, - a central electrode (M) having a distance am and bm to the first and second electrodes respectively, where am = bm < ab, - a trigger electrode (T) having a distance tm to the central electrode, where tm < am, bm, - a trigger circuit (TS) for generating a trigger voltage at the trigger electrode suitable for igniting a gas discharge, wherein the trigger electrode (T) has a rectangular or square area.

The invention relates to an electroshock circuit that provides both muscle locking and pain / ache formation, allowing shocking to be performed without the need for a certain distance.

In an ignition coil 2 according to one embodiment, a first outer iron core 36o of a first coil set 10 and a second outer iron core 50o of a second coil set 20 share a common portion 58. The direction of a magnetic flux generated in the common portion 58 upon application of a current flowing through a first primary coil 32 of the first coil set 10 is opposite to the direction of a magnetic flux generated in the common portion 58 upon application of a current flowing through a second primary coil 46 of the second coil set 20. The direction in which an induced current generated in a first secondary coil 34 through an output port 28 is the same as the direction in which an induced current generated in a second secondary coil 48 through the output port 28.

Discharge switching device (108), which includes: a comparator section (210) configured to compare an input voltage value with a reference voltage value; and a trigger section (212) configured to discharge stored energy when the input voltage value exceeds the reference voltage value, characterized by the fact that the discharge switching device (108) further comprises a temperature compensation diode (220) which is configured to reduce a change in the reference voltage value; the trigger section (212) comprises a trigger device and a discharge device; wherein the trigger device includes a trigger metal oxide semiconductor field effect transistor (MOSFET) (222) and a trigger transformer (216).

A surge protective device includes a first electrical terminal, a second electrical terminal, and an overvoltage protection circuit connected between the first electrical terminal and the second electrical terminal. The overvoltage protection circuit includes a spark gap assembly between the first electrical terminal and the second electrical terminal. The spark gap assembly includes a first spark gap (SG) electrode and a second SG electrode defining a spark gap therebetween, and a trigger circuit operative to ignite a main electric arc between the first and second SG electrodes across the spark gap. The trigger circuit includes a groove defined in the second SG electrode, and a trigger member disposed in the groove. The trigger member is operative to assist formation of a trigger arc.

A pulse phase ablation biphasic PFA generator with finite energy source and delivery mechanism is disclosed, comprising: a signal source configured to output electrode input signals; a trigger circuit configured to trigger signals; at least one electrode channel circuit including a charge transfer source circuit including a source capacitor and coupled to the signal source to receive the electrode input signals, the charge transfer source circuit being configured to charge the source capacitor to a source voltage, a switching circuit coupled to charge transfer source circuit to receive the source voltage and to the trigger circuit to receive the trigger signals, and a charge transfer load circuit including a load capacitor coupled to the switching circuit; wherein the switching circuit further includes a plurality of spark gap switches activated by the trigger signals to cause the electrode channel to apply a biphasic waveform to electrodes configured to contact tissue.

Ionizer (10) which generates ions in the vicinity of an electrode (14) by applying a voltage to the electrode (14), comprising: a first DC voltage generation circuit (20a) which is configured to generate a DC voltage with positive polarity, a second DC voltage generation circuit (20b) configured to generate a DC voltage with negative polarity, a first resistor (22a) connected to an output side of the first DC voltage generation circuit (20a), a second resistor (22b) connected to an output side of the second DC voltage generation circuit (20b), and a switching unit (24) which connects the first resistor (22a) and the second resistor (22b) to the electrode (14) of the ionizer (10), wherein the first DC voltage generation circuit (20a) is configured to continuously generate the DC voltage with positive polarity, wherein the second DC voltage generation circuit (20b) is configured to continuously generate the DC voltage with negative polarity, wherein the switching unit (24) includes a first switch (28a) which can establish a connection between the first resistor (22a) and the electrode (14), and has a second switch (28b) that can establish a connection between the second resistor (22b) and the electrode (14) and wherein the first switch (28a) and the second switch (28b) are configured to be switched on in different time bands.

A surge protective device includes a first electrical terminal, a second electrical terminal, and an overvoltage protection circuit connected between the first electrical terminal and the second electrical terminal. The overvoltage protection circuit includes a spark gap assembly between the first electrical terminal and the second electrical terminal. The spark gap assembly includes a first spark gap (SG) electrode and a second SG electrode defining a spark gap therebetween, and a trigger circuit operative to ignite a main electric arc between the first and second SG electrodes across the spark gap. The trigger circuit includes a groove defined in the second SG electrode, and a trigger member disposed in the groove. The trigger member is operative to assist formation of a trigger arc.

The invention relates to an overvoltage protection circuit (100) for a DC network having a phase conductor (P), a neutral conductor (N) and a ground conductor (M), which overvoltage protection circuit has a first protection element (1) with a main arrester element (10), a first additional arrester element (11) and a second additional arrester element (12), wherein the main arrester element (10) can be connected to the phase conductor (P) and, via the first additional arrester element (11), to the neutral conductor (N) and, via the second additional arrester element (12), to the ground conductor (M), such that, in the connected state, the main arrester element (10) and the first additional arrester element (11) connect the phase conductor (P) to the neutral conductor (N), and the main arrester element (10) and the second additional arrester element (12) connect the phase conductor (P) to the ground conductor (M).

An ignition coil (1) comprises a connecting part (2) formed from a tubular elastic body that is bendable and deformable. The connecting part has a distal end attached to a spark plug (P) located in a spark plug hole (H) with a bend (H1), and a proximal end attached to a coil main body part (11) located at a proximal-side inlet part (H2) of the spark plug hole, which has a larger inner diameter than the bend. On an outer circumferential surface of a tubular main section (21) opposite the bend, a plurality of first ribs (31) are formed, each extending along an axis (L) of the connecting part.On an outer circumferential surface of a proximal tubular section (22), located on a proximal side of the tubular main section, a plurality of second ribs (32) are formed, each extending along the axis of the connecting part. When viewed along the axis of the connecting part, a maximum value (d1) of a first rib diameter, represented by the diameter of an imaginary circumscribing circle (C1) that circumscribes the tips of the first ribs of the tubular main section, and a maximum value (d2) of a second rib diameter, represented by the diameter of an imaginary circumscribing circle (C2) that circumscribes the tips of the second ribs of the proximal tubular section, satisfy the relationship d2 > d1.

A surge protection device (1) is shown and described, comprising at least one triggerable spark gap (10, 20, 30) for connection between a first conductor (L1) and a reference potential (N), and a spark gap arrangement (40) for connection between the reference potential (N) and the earth connection (PE), wherein the triggerable spark gap (10, 20, 30) has an ignition circuit (14, 24, 34). The overvoltage protection device (1) according to the invention has a relatively low protection level in that the spark gap arrangement (40) comprises a first spark gap (41) with a first electrode (411) and a second electrode (412) and at least one second spark gap (42) with a first electrode (421) and a second electrode (422), wherein the second electrode (412) of the first spark gap (41) and the first electrode (421) of the second spark gap (42) are at a common potential, so that the first spark gap (41) and the second spark gap (42) are connected in series, and that the ignition circuit (14, 24, 34) of the triggerable spark gap (10, 20, 30) is connected to the common potential of the second electrode (412) of the first spark gap (41) and the first electrode (421) of the second spark gap (42) of the spark gap arrangement. (40) is connected.

A Marx configuration has a housing surrounding an interior, and a Marx generator arranged in the interior. The Marx generator has a plurality of capacitor stages connected in series, each having at least one first and one second voltage terminal, and respective cross branches. Each two adjacent capacitor stages between the first terminal of the preceding and the second terminal of the following capacitor stage are connected by one of the cross branches. Each of the cross branches contains a spark gap, a sealed gas space for an insulating gas for the spark gaps which are arranged in the interior and at least two of the spark gaps. All spark gaps are arranged in a respective gas space, and the interior contains a sealed fluid space for a cooling fluid for the Marx generator. A base support disposed in the interior and surrounds the gas space partially.

The ignition coil (1) is provided with a joint part (2) which is composed of a cylindrical elastic body capable of bending deformation, the front end side of the joint part (2) is installed on a spark plug (P) arranged in a plug hole (H) with a bending part (H1), and the base end side of the joint part (2) is installed on a coil main body part (11) arranged in a base end inlet part (H2) with the inner diameter larger than that of the bending part (H1). A plurality of first ribs (31) extending along the axis (L) are provided on the outer peripheral surface of the main body tube section (21) facing the bent section (H1), and a plurality of second ribs (32) extending along the axis (L) are provided on the outer peripheral surface of the base end tube section (22) positioned closer to the base end side than the first ribs (31). When viewed from the direction along the axis line L, the maximum diameter (d1) of a first rib diameter, which is represented by the diameter of an imaginary circumscribed circle (C1) that circumscribes the tips of a plurality of first ribs (31) of the main body tube section (21), and the maximum diameter (d2) of a second rib diameter, which is represented by the diameter of an imaginary circumscribed circle (C2) that connects the tips of a plurality of second ribs of the base end tube section (22), are located at d2gt. And d1.

An ignition system may include an igniter circuit to control the current in a coil supplied by a battery based on an input signal from an engine control unit. To prevent overheating, the igniter circuit may be configured to shut down the current in the coil when the input signal is held high for an over dwell period. The disclosed igniter circuit is configured with circuitry to automatically adjust the over dwell period used based on a condition of the battery to prevent overheating without prematurely shutting down. The automatic adjustment includes indirectly monitoring the battery condition based on a current or a voltage of a switching device coupled to the coil.

To provide a withstand voltage tester that reduces erroneous determination in a withstand voltage test for a high-voltage coil device.SOLUTION: An ignition coil 70 (high-voltage coil device) can supply electromotive voltage generated by an induction coil to the outside via a spring 75. A metal jig 11 of a withstand voltage tester 101 accommodates a joint 74 and a plug cap 76 of the ignition coil 70 and supports a coil case 71 with seal rubber 73 therebetween. A connection member 20 for a test is formed of conductive material into a rod shape, has a top part 21 and a column part 22, and is applied with test voltage from the ignition coil 70. An insulation protective tube 301 is formed of insulating material into a hollow cylindrical shape, has the column part 22 of the connection member 20 for a test inserted therein, and has an outer peripheral surface 33 on a side of the ignition coil 70 inserted into the plug cap 76. The insulation protective tube 301 has an uneven shape whose radial dimension alternately increases and decreases which is formed on the outer peripheral surface 33 on the side of the ignition coil 70 accommodated in the plug cap 76.SELECTED DRAWING: Figure 5

A numerical control electronic ignition circuit belongs to the technical field of electronic circuits. A conventional numerical control electronic ignition circuit needs to occupy four IO ports of a microprocessor, and in some working occasions (such as electronic fireworks and oxygen blasting), one microprocessor needs to control N ignition channels at the same time, so that a microprocessor with not less than 4N IO ports needs to be used. According to the invention, a capacitor charging circuit, a capacitor discharging circuit and an ignition resistor circuit are detected and integrated in one IO-A port, and an ignition control IO-B port is added, so that only two IO ports are needed, N ignition channels are controlled to have 2N IO ports, and the requirement on microprocessor resources can be reduced.

A surge arrester for DC mains comprises a spark gap for extinguishing mains follow currents in the DC mains, the current intensity of which is equal to or greater than a specified current threshold, and a triggerable extinguishing aid assigned to the spark gap, which is set up to extinguish mains follow currents below the specified current threshold. The surge arrester further comprises an evaluation module for triggering the extinguishing aid, the evaluation module being set up to trigger the extinguishing aid as soon as at least two tripping conditions are fulfilled which are characteristic of the fact that the spark gap alone 10 cannot extinguish the mains follow current within a specified time duration. Furthermore, a method of operating such a surge arrester is described.