CN2031122U - Modified relay type ac voltage stabilizer - Google Patents
Modified relay type ac voltage stabilizer Download PDFInfo
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- CN2031122U CN2031122U CN 87207664 CN87207664U CN2031122U CN 2031122 U CN2031122 U CN 2031122U CN 87207664 CN87207664 CN 87207664 CN 87207664 U CN87207664 U CN 87207664U CN 2031122 U CN2031122 U CN 2031122U
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Abstract
The utility model discloses a modified relay type AC voltage stabilizer. Voltage adjusting windings of which the turn number are in the relationship of geometric proportion in a transformer are respectively connected with contact points of relays, and coils of the relays are connected with a transistor collector on an unbalance analog--digital converter. A flashing stopping switch is connected to the input end of an electric network. The voltage stabilizing output of 220V (plus/minus) 5% is obtained in the variation range between 250V and 125V of the input voltage of the electric network by using three relays and a control device. The voltage stabilizer has the advantages of simple structure, low cost, high precision and reliable performance.
Description
The utility model relates to a kind of improved relay system AC voltage regulator, and it can obtain burning voltage output when the electrical network input voltage fluctuation.
In traditional relay system AC voltage regulator, the number of turn that the voltage of transformer is adjusted winding is an equivalent.When input voltage dropped to certain value, operation circuit made first actuating of relay, thereby made first voltage adjustment winding of transformer seal in work.Along with the further reduction of voltage, the relay of action necessarily increases, and the voltage that seals in circuit working is adjusted winding and also followed and increase.Like this, if will when line voltage fluctuates between 125 volts from 250 volts, obtain 220 volts ± 5% voltage stabilizing output, then need to use 7 relays just can meet the demands at least.Obviously, the cost height of this equipment, operation circuit is more complicated also.
Task of the present invention is that a kind of improved relay system AC voltage regulator will be provided, it only needs to adopt three relays just can reach above-mentioned precision of voltage regulation requirement, its operation circuit is simple, the not only alternative traditional relay system voltage stabilizer of this equipment, and in certain usable range desirable generation expensive full-automatic AC electronic regulator.It has simple in structure, and cost is low, precision of voltage regulation height, advantages such as dependable performance.
Task of the present utility model is finished as follows, the voltage of relay system AC voltage regulator is adjusted umber of turn and is designed by geometric progression, and the end points that each voltage is adjusted winding joins with the contact of three relays respectively, and to adjust winding be whether and respectively action according to these three relays seals in circuit working with different array configurations to each voltage like this.Because adjusting the number of turn of winding, voltage becomes the geometric ratio relation, such second voltage is adjusted winding and is sealed in circuit working and be equivalent to first voltage of two times and adjust winding and seal in circuit, and the 3rd voltage adjustment winding seals in circuit working, and first voltage adjustment winding that then is equivalent to four times seals in circuit.Like this,, not necessarily to increase the number of the actuating of relay, promptly not necessarily will increase the number that the voltage that seals in circuit is adjusted winding along with the decline of line voltage.In these three relays, there is a relay only when the voltage great fluctuation process, just to move, another relay moves when the little fluctuating of voltage, and the acting characteristic that also has a relay is between this centre of two kinds.This voltage adjustment is large, medium and small three grades of staggered adjustment.When line voltage fluctuates in the scope (250 volts to 125 volts) of regulation, these three relays have eight kinds of possibilities altogether with multi-form combination, or one of them actuating of relay, or two actuatings of relay wherein, or three relays all move and all are failure to actuate.We roughly are divided into eight grades to the electrical network input voltage from 250 volts to 125 volts, eight kinds of combinations of actuating of relay variation are corresponding to eight retainings of grid voltage change like this, therefore can change the array configuration that voltage in the control transformer is adjusted winding by relay status, guarantee that stabilizer output voltage is stabilized in 220 volts ± 5% the scope.When input voltage be in we during fixed first retaining, all relays all are failure to actuate; When input voltage dropped to for second when retaining from first retaining, allow first actuating of relay, make first voltage adjust winding and seal in circuit working; When line voltage drops to the 3rd retaining, by operation circuit, allow first relay get back to release conditions, and allow second actuating of relay, even first voltage is adjusted winding and deactivated heavily again, seal in circuit working and make second voltage adjust winding; When voltage dropped to fourth speed, first relay also moved, and first and second voltage is adjusted winding and all sealed in circuit working; When voltage drops to the 5th grade, make first and second relay all get back to release conditions by operation circuit, and make the 3rd actuating of relay, even first and second voltage is adjusted winding and is deactivated, allow the 3rd voltage adjust winding and seal in circuit working, it is equivalent to four times of first voltages adjustment windings and seals in circuit working; When input voltage drops to the 6th grade, first relay and the 3rd actuating of relay, first and the 3rd voltage are adjusted winding and are sealed in circuit working; When input voltage dropped to the 7th grade, second and the 3rd voltage were adjusted winding and are sealed in circuit working; When input voltage dropped to the 8th grade, three relays all moved, and promptly three voltages are adjusted winding and all sealed in circuit working.
In addition, at the output terminal of transformer a relay is set, its effect is to be higher than 250 volts or when being lower than 125 volts when line voltage, can cut off the output of voltage stabilizer automatically.
In order to realize this control to the relay variable condition, can adopt unbalanced analog-digital converter or other control circuit, four comparers and four phase inverters are arranged in the unbalanced analog-digital converter, the transistor base that the output terminal of four phase inverters is corresponding with it joins, these four transistor collectors link to each other with the coil of above-mentioned four relays again, make the relay switch action by transistorized state variation, make the contact switch action of relay, voltage is adjusted winding and is sealed in circuit working with the various combination form, and the electrical network input voltage passes through the adjusted output voltage of relay system AC voltage regulator and can be stabilized in 220 volts ± 5% the scope like this.
This relay system AC voltage regulator also has " end and a dodging " switch, and this is a single-pole double-throw switch (SPDT), and its terminates at the electrical network input end, and two-end-point is connected on the coil winding of transformer in addition.When input voltage was in certain conversion critical point, the relay in the voltage stabilizer can ceaselessly move, and can prevent and beated as long as at this moment pull this switch.
The utility model will be further described below in conjunction with accompanying drawing.
Figure one is a basic circuit diagram of the present utility model.
The nominal number of turn of each winding is N in the transformer of this relay system AC voltage regulator (1)
BD=250, N
CD=231, N
FG=24.3, N
DE=51.3, N
AC=108, wherein coil winding FG, DE and AC are called voltage adjustment winding, and the number of turn that these voltages are adjusted windings is not an equivalent, but becomes geometric ratio to concern, i.e. N
DE/ N
FG 
N
AC/ N
DE 2.Control circuit adopts unbalanced-number converter (2), in order to realize the special logic control to three relays (3), (4), (5).Four comparers (6) in the unbalanced analog-digital converter (2), (7), (8), (9) are made up of a four-operational amplifier, their in-phase input end all is a Voltage Reference end separately, and inverting input connects together, and is the sampling voltage input end.Four phase inverters (10), (11), (12), (13) also are to be served as by one four phase inverter, and using the purpose of phase inverter is for output amplitude is consistent.Those numbers of turn become the voltage of geometric ratio relation to adjust winding AC, DE and FG to link with the contact of relay (3), (4), (5) respectively in the transformer (1), and the body pipe (17) on the coil of relay (3), (4), (5) and the unbalanced analog-digital converter (2), (20), (24) collector join.The contact point structure of relay (3), (4) and (5) is a single-pole double-throw switch (SPDT)., supposing that when output is arranged be 250 here, is 0 during no-output.(note: output voltage+250 of two voltage stabilizers (14) and (15) in here 250 and the circuit ,+170 all do not indicate unit, and these numerals only have the ratio meaning, its unit is not a volt).
Potentiometer (16) is the input voltage sampling potentiometer, and when the voltage ripple of power network scope was 250 volts to 125 volts, the output of potentiometer swing arm also was 250～125.
For the operation circuit principle is described, we are divided into eight retainings with sampling voltage: 250～226,226～205,205～185,185～170,170～154,154～144,144～134,134～126.Because this eight retaining is unbalanced, so we adopt unbalanced analog-digital converter.Certainly, it is balanced also can making this eight retaining, so only needs common analog-digital converter, and but, this can make the whole precision of voltage regulation descend.
When line voltage is in first retaining, the sampling voltage that is potentiometer (16) is 250～226, at this moment the relatively end reference potential of comparer (6) is 170, be lower than the inverting input sampling voltage, so comparer (6) is output as 0, thereby makes phase inverter (10) be output as 250, so transistor (17) ends, relay (5) keeps discharging, and voltage is adjusted winding AC and deactivated.In addition, when phase inverter (10) when being output as 250, comparer (7) in-phase input end just is connected to noble potential 250 by resistance (18), current potential 170 in being connected to by resistance (19) again, suitably choose the resistance of resistance (18), (19), the reference potential that makes comparer (7) is 205, at this moment sampling voltage 250～226 is higher than this reference potential, comparer (7) is output as 0, the output of phase inverter (11) then is 250, transistor (20) ends, and relay (4) discharges, and voltage is adjusted winding DE and also deactivated.When phase inverter (10), (11) when all exporting 250, the in-phase input end of comparer (8) just is connected to noble potential 250 by resistance (21), (22), current potential 170 in being connected to by resistance (23) again, suitably choose the resistance of resistance (21), (22), (23), making the in-phase input end reference potential at this moment of comparer (8) is 226.Like this, sampling voltage 250～226 still is higher than it, makes comparer (8) be output as 0, and phase inverter (12) is output as 250, and transistor (24) ends, and relay (3) discharges, and voltage is adjusted winding FG and also deactivated.In sum, this moment, the number of turn was that 250 input coil winding BD actual potential is 250～226, and was that the voltage of 231 coil CD output is 2,31/,250 250～2,31/,250 226 promptly 231～209 from the number of turn.
When input voltage drops to second retaining, be that sampling voltage is 226～205, compare as can be known with the front, relay (5), (4) still are in release conditions, voltage is adjusted winding AC, the DE circuit of still deactivating, but this moment, sampling voltage 226～205 was lower than the relatively end reference potential 226 of comparer (8), comparer (8) is output as 1, it is 0 that phase inverter (12) is output as, transistor (24) is saturated, relay (3) produces action, and voltage is adjusted winding FG and sealed in electric circuit working.At this moment, input coil umber of turn N
BDVirtual voltage on=250 is 226～205, and is N by the number of turn of coil CD and FG
CD+ N
FG=231+24.3=255.3, at this moment the actual output voltage of voltage stabilizer is 255.3/250 226～255.3/250 205 promptly 231～209.
When input voltage drops to the 3rd retaining, be that sampling voltage is 205～185 o'clock, the identical release conditions that still are in of relay (5) with above-mentioned situation, voltage is adjusted winding AC and is not sealed in circuit working, and the reference potential of comparer (7) is 205, at this moment sampling voltage 205～185 has been lower than this reference potential, comparer (7) is output as 1, and phase inverter (11) is output as 0, and transistor (20) is saturated, relay (4) action, voltage is adjusted winding DE and is sealed in circuit working.In addition, when phase inverter (11) when being output as 0, the in-phase input end of comparer (8) is suitably selected the resistance of resistance (25) just by resistance (25) ground connection, makes the comparison current potential of comparer (8) in-phase input end this moment drop to 185.So sampling voltage 205～185 is higher than this relatively current potential again, thereby makes comparer (8) be output as 0, phase inverter (12) is output as 250, and transistor (24) ends, and relay (3) is in release conditions, and voltage is adjusted winding FG and deactivated again.At this moment input coil BD(number of turn N
BD=250) virtual voltage is 205～185, and the number of turn of output winding CD and DE is N
CD+ N
DE=231+51.3=282.3, actual output voltage are 282.3/250 205～282.3/250 185 promptly 231～209.
When input voltage drops to the 4th retaining, sampling voltage is 185～170, and at this moment relay (5) does not still change state, and the comparison current potential of comparer (7) still is 205, sampling voltage still is lower than it, the operating state of relay (4) and the identical attracting state that also is in of the 3rd retaining.The comparison current potential of comparer (8) also still is 185, but this moment, sampling voltage 185～170 was lower than this comparative voltage, and comparer (8) is output as 1, and phase inverter (12) is output as 0, and transistor (24) is saturated, and relay (3) produces action.So voltage is adjusted winding DE and FG seals in circuit working.At this moment the turn number N of input voltage
BD=250, its actual input voltage is 185～170, and actual output winding is three sections of CD, DE and FG, and its number of turn summation is N
CD+ N
DE+ N
FG=231+51.3+24.3=306.6, the virtual voltage of its output are 306.3/250 185～306.6/250 170 promptly 227～209.
……
The rest may be inferred by analogy, and input voltage is when fluctuating between 125 volts for 250 volts, and output voltage always is stabilized between 231 volts to 209 volts.
The output of relay (26) control voltage stabilizer, the collector of the transistor (27) on its coil and the unbalanced analog-digital converter (2) joins, the contact point structure of relay (26) is normally closed single-pole single-throw switch (SPST), the one end links to each other with relay (5), and the other end is the output terminal of voltage stabilizer.The comparison reference voltage of getting comparer (9) is 250, when sampling voltage greater than 250 the time, comparer (9) is output as 0, phase inverter (13) is output as 250, so transistor (27) is saturated, relay (26) produces action, cuts off the output circuit of voltage stabilizer.In addition, in the collector connection place of the coil of relay (26) and transistor (27) and connect a loop of being formed by stabilivolt (28), transistor (29) and (30), the voltage stabilizing value of choosing stabilivolt (28) is 125, when sampling voltage is lower than 125, transistor (29) ends, transistor (30) is saturated, relay (26) action, the output circuit of cut-out voltage stabilizer.
" ending and dodging " switch (31) is a single-pole double-throw switch (SPDT), and its two terminates on the coil winding BD of transformer (1), and another end points is the input end of electrical network.When input voltage just is in the position of relay transition status, relay will be beated incessantly, at this moment " end and dodging " switch (31) can be pulled to another side, will change sampling voltage value a little like this, avoid this critical point; If when running into another critical point again, only need " to end and dodging " switch (31) and pull to this side again, just can avoid another critical point.
Certainly, this control circuit also can adopt discrete component, but its circuit is complicated a little.
Claims (4)
1, a kind of by transformer (1), unbalanced analog-digital converter (2), the relay system AC voltage regulator that relay (3), (4), (5), (26) and " end and dodging " switch (3) are formed, it is characterized in that: those numbers of turn become the voltage of geometric ratio relation to adjust winding AC, DE and FG to link with the contact of relay (3), (4), (5) respectively in the transformer (1), and the coil of relay (3), (4), (5) and (26) and the transistor (17) on the unbalanced analog-digital converter (2), (20), (24) and (27) collector join.
2, press the relay system AC voltage regulator of claim 1 defined, it is characterized in that: the contact point structure of relay (3), (4) and (5) is a single-pole double-throw switch (SPDT), and the contact point structure of relay (26) is normally closed single-pole single-throw switch (SPST), its end links to each other with relay (5), and the other end is the output terminal of voltage stabilizer.
3, by the relay system AC voltage regulator of claim 1 defined, it is characterized in that: in the collector connection place of the coil of relay (26) and transistor (27) and connect a loop of being formed by stabilivolt (28), transistor (29) and (30).
4, press the relay system AC voltage regulator of claim 1 defined, it is characterized in that: connect " end and a dodging " switch (31) at the coil winding BD two ends of transformer (1), this " ends and dodging " switch (31) is single-pole double-throw switch (SPDT), and its another end points is connected on the input end of electrical network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207664 CN2031122U (en) | 1987-05-01 | 1987-05-01 | Modified relay type ac voltage stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207664 CN2031122U (en) | 1987-05-01 | 1987-05-01 | Modified relay type ac voltage stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031122U true CN2031122U (en) | 1989-01-18 |
Family
ID=4823071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87207664 Expired - Lifetime CN2031122U (en) | 1987-05-01 | 1987-05-01 | Modified relay type ac voltage stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115534708A (en) * | 2022-10-21 | 2022-12-30 | 深圳市量子新能科技有限公司 | Control circuit of ground AC charging pile and AC charging pile |
-
1987
- 1987-05-01 CN CN 87207664 patent/CN2031122U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115534708A (en) * | 2022-10-21 | 2022-12-30 | 深圳市量子新能科技有限公司 | Control circuit of ground AC charging pile and AC charging pile |
| CN115534708B (en) * | 2022-10-21 | 2023-06-23 | 深圳市量子新能科技有限公司 | Control circuit of ground alternating-current charging pile and alternating-current charging pile |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |