CN205992792U - Three end float type vacuum cavitations change power supply - Google Patents

Abstract

Three end float type vacuum cavitations change power supply，Belong to electronic technology field，By rectification and lightning protection unit，Alternating Current Power Supply，Constant current floating charge unit，Accumulator，Controllable silicon switch unit，Control unit，Negative pressure unit forms，It is the double-purpose source that a kind of exchange of use vacuum cavitations is automatically switched with direct current，While wherein rectification and lightning protection unit form rectification output，Form fast tripping protection during overvoltage，Constant current floating charge unit is connected as constant current form with ripe three-terminal voltage-stabilizing and forms independent floating charge branch road to accumulator，Floating charge is made to obtain very big scientific，Alternate current operation unit in Alternating Current Power Supply is formed with Alternating Current Power Supply during exchange with exchanging backup units，When alternate current operation unit damages，Exchange backup units are substituted immediately，When no civil power，Accumulator automatically switches and powers，Switching controllable silicon adopts vacuum cavitations，There is good switching characteristic，Thus energy extensive utilization is in medical apparatus and instruments.

Description

Three end float type vacuum cavitations change power supply

Technical field

Belong to electronic technology field.

Background technology

Power supply is the basis of all electronic products, and the quality of power supply directly determines the performance of electronic product.So at present There is much outstanding regulated power supply integrated circuit, such as 78 series, 79 series etc..Although these integrated series above-mentioned have a lot Advantage, still can not meet needs with rapid changepl. never-ending changes and improvements.

Medical device as used by hospital, the requirement to power supply for these products is just very high, and overcritical degree will be significantly larger than commonly Household electrical appliances, are inefficient by traditional design.Reason is as follows：

One be power supply be often electrical equipment, the most troublesome keypoint part, all such to ordinary electrical home appliance.And to being furnished with electric power storage The product in pond is even more so, because during with accumulator, not only load power source, and increased the charging current filling accumulator again, If accumulator electricity consumption is excessive, initial charge stream is very big, thus more exacerbates the load of power supply, thus is easily damaged.

Two is the same day in thunderstorm season for the ordinary electrical home appliance, can pull out power supply prevention, needing the used time,（If desired for seeing electricity Apparent time）, because being easily alerted, can recover immediately, user is expected.And medical device class product is really highly difficult, also not Power supply may be pulled out.And present stable state is integrated in lightning protection, very weak.

The three particularity importances being because medical device change more it is therefore necessary to will adapt to electrical network in design On a large scale, key benefit reason one is when voltage ripple of power network, integrated regulator will not originally be penetrated and cause to damage.Reason two Be, when civil power is relatively low or relatively high can normal voltage stabilizing, do not result in the failure of protection function.Reason three is to make Medical treatment device Material can have bigger use space.

Four are essential to join accumulator, and the maintenance of accumulator has higher requirement, wherein charging voltage value and place value Different.If load request voltage stabilizing is pressed in voltage stabilizing, the requirement of charging can not be met, if by the voltage charging as requirement, Then load will be higher than normal required voltage for a long time.This is difficult point one.Difficult point two is if there are battery discharging system, certainty and city Electric electric power system forms OR gate power supply mode to load, therefore both and the circuit being loaded with an OR gate property.Battery discharging When most of time be 2 volts of standard value of every section, with discharging, this value also will decline, and the output voltage drop of therefore accumulator is very precious Expensive, if the pressure drop of the circuit of OR gate property is excessive.The normal standard of deviation then loading increases.What therefore made using measure Accumulator does not produce excessive pressure drop in electric discharge, becomes difficult point.Difficult point three is to be set of system when there being civil power to load, and No civil power when be that battery system is powered again, conversion between the two is to automatically switch, and therefore how just to enable conversion science Change.Difficult point four is how to form two parts and power to be independent of each other each other, is when accumulator breaks down, does not interfere with civil power Electric power system, on the contrary do not interfere with battery system during mains-supplied system failure.Difficult point five, some data proposition relays To make to switch, this scheme has multiple deficiencies, and wherein one important point deficiency is power consumption, difficult point six is, some scheme cost mistakes Height, is not suitable for the popularization of product.

Just because of above-mentioned factor so that the development of power supply receives obstruction, the performance of electronic product to be made obtains more Further improve it is necessary first to be exactly power supply innovation, so it is perfect to need brand-new thinking that power supply is carried out.

Content of the invention

This practical main purpose is that proposition vacuum cavitations controllable silicon switches over, increases fast tripping protection during overvoltage Measure, this measure, employ constant current floating charge unit and floating charge carried out to accumulator, have during mains-supplied employ backup formula electricity Source, thus have multiple advantages after implementing, one is that power supply power supply reliability is high, and two is that lightning protection is good, and three is that alternating current adapts to width, special Put it is important that charge and discharge contradiction during Accessory Battery can be solved, thus this power supply has extensive and special purposes.

1st, three end float type vacuum cavitations change power supply by rectification and lightning protection unit, Alternating Current Power Supply, constant current floating charge unit, store Battery, controllable silicon switch unit, control unit, negative pressure unit collectively constitutes.

Wherein：Rectification is made up of with lightning protection circuit rectification circuit with lightning protection unit；Lightning protection circuit by lightning protection stabilivolt and is prevented Thunder relay forms.

Rectification circuit is a bridge rectifier, and its output connects a filter capacitor；One line bud of lightning protection relay Termination connects the output of rectification circuit, and thunder stabilivolt is taken over control to ground wire in another line bud termination, and the transfer contact of lightning protection relay connects The output of rectification circuit, the normally-closed contact of lightning protection relay is the output of rectification and lightning protection unit.

Alternating Current Power Supply is isolated by resistance inclined in alternate current operation audion, alternate current operation, alternate current operation by alternate current operation unit Diode, pressure reduction diode, alternate current operation voltage stabilizing branch road, alternating voltage ditty resistance composition.

Exchange backup units by exchange backup audion, exchange backup isolating diode form.

Alternate current operation audion connects the output of rectification and lightning protection unit, alternate current operation with the colelctor electrode exchanging backup audion Upper inclined resistance is connected between colelctor electrode and the base stage of alternate current operation audion, and pressure reduction audion is connected on the base of alternate current operation audion Between pole and the base stage exchanging backup audion, alternate current operation voltage stabilizing branch road is exchanging backup with alternating voltage ditty resistant series Between the base stage of audion and ground wire, alternate current operation audion respectively connects an isolating diode with the emitter stage exchanging backup audion It is connected with switching silicon controlled negative electrode afterwards, become the output changing power supply of three end float type vacuum cavitations.

By two manostat, two isolating diodes, constant current adjustment resistance collectively constitutes constant current floating charge unit：Two manostat Input all connect rectification output, the outfan of two manostat respectively connects an isolating diode and is followed by constant current adjustment resistance and arrives The positive pole of accumulator, the earth terminal of two manostat all connects the positive pole of accumulator, the minus earth line of accumulator.

Controllable silicon switch unit is formed with controllable silicon excitation resistance by switching controllable silicon：Switching silicon controlled anode connects electric power storage Pond positive pole, controllable silicon excitation resistance is connected between switching silicon controlled anode and control pole, switches silicon controlled negative electrode and exchanges In alternate current operation isolating diode in voltage regulation unit, exchange backup units, the negative pole of exchange backup isolating diode is connected, and becomes The output changing power supply of three end float type vacuum cavitations.

TCU transfer control unit by control audion, control transistor base resistance, control isolating diode one, control isolation Diode two forms：Control a termination rectification of transistor base resistance and the output of lightning protection unit, another termination controls three poles The base stage of pipe, controls the grounded emitter line of audion, controls the positive pole of isolating diode one to connect negative pressure electric capacity in negative pressure unit Positive pole, control isolating diode one negative pole connect control audion colelctor electrode, control isolating diode two be connected on switching can Between the control pole of control silicon and the colelctor electrode controlling audion.

Negative pressure unit is made up of negative pressure resistance one, negative pressure electric capacity, negative pressure resistance two, negative pressure steering diode：Negative pressure resistance Between one positive pole being connected on accumulator and the positive pole of negative pressure electric capacity, the negative pole of negative pressure electric capacity connects negative pressure resistance two and arrives ground wire, negative pressure Steering diode is connected between switching silicon controlled control pole and the negative pole of negative pressure electric capacity.

2nd, the voltage stabilizing value of lightning protection stabilivolt is higher than the output voltage values of rectification and lightning protection unit.

3rd, alternate current operation audion, exchange backup audion are all NPN triodes, its back-pressure value >=300V.

4th, in alternate current operation, the power of inclined resistance is 1W.

5th, switching controllable silicon is one-way SCR.

6th, two manostat in constant current floating charge unit adopt three terminal regulator, i.e. the integrated regulator of 78 series.

It is further described below：

First, Alternating Current Power Supply has very strong reliability.

Because the alternate current operation unit in the present invention forms Alternating Current Power Supply with exchanging backup units, it is the master to loaded work piece Want the time, be normal time, and power supply is the part being easiest to damage.Devise two units for this in this measure, that is, It is alternate current operation unit and exchange backup units, and takes a kind of special design, this design is alternate current operation three pole Pipe（8.1 in Fig. 2）Base stage than exchange backup units the multiple pressure reduction diodes of transistor base（8.4 in Fig. 2）；Institute It is higher than exchange backup audion with the audion output voltage that works（9.1 in Fig. 2）Output, exchange backup audion will be sealed up a door, No current exports, and power consumption is similar to zero, so backup audion will not damage, is in a kind of Status of Backups.When alternate current operation three After pole pipe is damaged, exchange backup audion is by automatic output voltage.

Secondly, in this part, pressure reduction diode employs the commutation diode of face combination, and route is propped up in its alternate current operation voltage stabilizing Multiple Diode series become, and are to be hardly damaged with the benefit of diode, and therefore this part reliability is high.

Alternate current operation unit with exchange in backup units, alternate current operation voltage stabilizing branch road is the big adjustment to output voltage, Because increasing a diode is 0.7V, alternating voltage ditty resistance is accurately to be adjusted the voltage within less than 0.7V Whole, so ensure that the accuracy of output voltage.

2nd, the rectification during this is practical and lightning protection unit possess good lightning protection effect.

Its reason is：There is multi-stage protection unit, when the output of rectification circuit has high voltage transient, lightning protection relay（In Fig. 1 3.1）The lightning protection stabilivolt being connect（In Fig. 1 3.2）Suction through, its corresponding normally-closed contact disconnects, and forms fast tripping protection to rear class, Therefore there is protective effect to thunderbolt, form the protection of the lightning protection first order.The principle that this protection is formed is that rear class is cut off, and not Be short circuit, so playing the role of good, numerous equipment of many Compact Power Plants lightning protection it is simply that adopt this quick-break Protection.Because alternate current operation audion employs high countervoltage triode, its back-pressure >=300V, anti-reflective pressure energy power is strong, so being formed Second class protection.Because AC voltage-stabilizing unit can export more stable voltage, good protective effect, institute can be served to simultaneously rear class Strong with integrated circuit lightning protection properties.

The two ends wherein one termination rectification circuit output of the line bud of lightning protection relay, the other end takes over control thunder stabilivolt to ground Line, because the voltage stabilizing voltage of stabilivolt several volts higher than the output of rectification, therefore in normal state, lightning protection stabilivolt will not be hit Wear, the transfer contact of lightning protection relay is communicated with normally-closed contact, that is to say that the input of rear class is all equivalent to and be connected on rectification output On, and once there being thunderbolt overvoltage, after overvoltage exceeds the pressure voltage of lightning protection stabilivolt, lightning protection stabilivolt is breakdown, lightning protection relay Device adhesive, its transfer contact is disconnected with normally-closed contact, and the input dead electricity of rear class, thus protect late-class circuit.

It is that the pressure of anti-thunder tube is typically all upper hectovolt with the benefit that such circuit forms switching behavior lightning protection, tens The very difficult of volt is looked for, and for such low-voltage for general 12V, 24V, 36V, the anti-thunder tube with hectovolt is clearly incorrect , and the voltage stabilizing voltage of stabilivolt selects very well, can within the scope of very low, and the reason using relay be, relay Device response is rapid, can quickly thunderbolt be responded, so selecting lightning protection relay and lightning protection stabilivolt to collectively constitute switch Lightning protection forms protection to circuit.

3rd, there is wider mains input voltage explanation.

1st, the wider scope of civil power can be operated in.

It is high-power high countervoltage triode in circuit, the back-pressure of its colelctor electrode may be up to 300 volts, so mains transformer The voltage of secondary side can be suitable higher, when therefore civil power is relatively low, the voltage of the secondary side of mains transformer remains to meet device The requirement of part.And when therefore civil power is higher, its rectification output is still not above 300 volts, thus it is unlikely to three in circuit Pole pipe damages.So originally practical can be operated in electric hypodynamic place, and also will not damage in the too strong place of electric power Evil.

2nd, be difficult when unexpected fluctuation in civil power damaged.

Also because above-mentioned reason, in civil power unexpected fluctuation, will not damage easily.

4th, three end constant-current circuits form the standard floating charge to accumulator charging formation science it is ensured that the life of storage battery.

This unit is by two three terminal regulators（In Fig. 1 2.11 and 2.21）, two isolating diodes（In Fig. 1 2.12 with 2.22）, constant current adjustment resistance（In Fig. 2 2.5）Composition.

Have two three-terminal voltage-stabilizing parallel connections in constant current source in the present invention, be connected in the form of constant current, each connect one every Make to isolate from diode, share a constant current and adjust resistance, circuit is simplified, the power of floating charge used is two three terminal regulators Shared, reduces and damages, and constant current is secure.

5th, the explanation of controllable silicon switch unit.

In this is practical, the one-way SCR that switching controllable silicon adopts, its cut-away view such as Fig. 2.When controlling three poles Pipe（6.1 in Fig. 1）During for a high position, switch controllable silicon（5.1 in Fig. 1）Encourage resistance in controllable silicon（5.2 in Fig. 1）Excitation under, So controllable silicon can saturation conduction.

When control audion（6.1 in Fig. 1）During for saturation conduction, at this moment silicon controlled control pole can be approximately low level, with When can reliably end under the dual function of negative pressure unit.

The reason cut-off, is as follows：When silicon controlled control extremely rapid for low level when, when particularly having negative pressure, in controllable silicon The base stage of portion's structure NPN triode, current distributing, without going past controllable silicon inside NPN triode（In Fig. 2 18.4）, so Can move towards rapidly to end, the internal PNP triode of controllable silicon（In Fig. 2 18.2）Also can move towards rapidly to end, this two pipe is formed by force Strong positive feedback, causes controllable silicon to end rapidly.Teaching when silicon controlled anode current reduces therefore in this and textbook And the principle producing cut-off is the same.

6th, the explanation of control unit.

The effect of control unit is jointly to coordinate with negative pressure unit, the co- controlling controllable silicon switch unit when no civil power, Make it reliable to turn on and end.So that controllable silicon switch unit is reliably turned on when there being civil power.

When no civil power, rectification and lightning protection unit no electricity output, so being low level, control audion（In Fig. 1 6.1）For Cut-off, current collection is extremely high-order, so switching controllable silicon（5.1 in Fig. 1）Encourage resistance in controllable silicon（5.2 in Fig. 1）Excitation under, So controllable silicon can saturation conduction.

When there being civil power, rectification and lightning protection unit have electricity output, so being a high position, control audion（In Fig. 1 6.1）For Saturation, current collection extremely low level, so silicon controlled control pole is approximately low level, under the collective effect of negative pressure unit, by turning on It is changed into cut-off.

7th, the explanation of negative pressure unit.

Negative pressure unit Main Function is the effect co- controlling controllable silicon switch unit of cooperation control unit, makes it reliable Conducting and cut-off.

The principle forming negative pressure is, when in control unit, audion is high-order, is when controllable silicon is on, electricity Negative pressure resistance one is passed through in source（7.1 in Fig. 1）Negative pressure resistance two（7.3 in Fig. 1）To negative pressure electric capacity；（7.2 in Fig. 1）；Charge, formed Voltage be proximate to negative pressure resistance one while for a high position, near negative pressure resistance two be low level, be that upper relative superiority or inferiority is low, when The audion of control unit（6.1 in Fig. 1）During saturation, current collection extremely low level, and negative pressure electric capacity（7.2 in Fig. 1）Voltage can not jump Become, so high order end is approximately zero, and low order end becomes negative pressure, through negative pressure steering diode（7.4 in Fig. 1,）Effect, make Silicon controlled control pole becomes negative pressure, thus is advantageous to silicon controlled cut-off.

There is following significant advantage after this practical enforcement：

The quality of power supply, directly influences overall performance.Power source performance is good, then overall performance is good.The one of particular importance It is that important equipment is generally equipped with Accessory Battery, such as can not directly affect the life of storage battery and reliability to its scientific maintenance Property it would be possible to become a kind of new trouble point, if two is if that the power supply parameter of supporting power supply is deposited with the power supply parameter of civil power Lead in difference, electric property will be directly affected, three is that the automatic switchover performance needing two kinds of power supplys will be got well, to ensure each card signal Do not run off.Four is for ordinary electrical home appliance, and some important performances can be made up with the behavior of employment, such as thundery sky, can be artificial Pull out power supply, and a lot of equipment can not be made up with artificial mode, the product of class of such as ensuring public security, and pulling out power supply just makes " security personnel " one-tenth For blank, such as used in the equipment of signal transmission system, pull out power supply and can cause the unimpeded of system signal.What is more, sometimes people Also can not possibly arbitrarily go to power-off source before equipment, pull out power supply.Details success, and the uncertain genus of the problems referred to above is thin Section.This is practical to be a kind of very excellent regulated power supply of performance, and he has all excellent properties of current product, and also has Serial bright spot, therefore can be widely used for the needs of various electronic, adapting to the different development of the electronic product moon new day needs Will.Concrete condition is as follows：

1st, substantially increase the life-span of charger, decrease the scrappage of charger, fill to being electrically charged pond and achieving science Electricity, enhances maintenance, extends the life-span being electrically charged pond, decreases scrappage.

When the 2nd, using storage battery power supply, can accomplish maximum scientific, its reason one is to automatically switch when no civil power, accumulator Automatically engage immediately, when there being civil power, accumulator is excised automatically.Thus impact will not be produced on load.Ensure that the property of load Energy.

3rd, because having strong positive feedback, switching characteristic is good, and waveform can be approximately square wave, thus can use for switching controllable silicon In requiring higher place.

4th, reliability is high, and adaptive surface is strong.One is the point that power supply is apparatus failure often generation, and in this measure, Alternating Current Power Supply has two Individual unit, and one is in Status of Backups, thus reliability is very high.Two is two kinds of out-put supplies（Floating charge output voltage, and negative Carry output voltage）Adjustability is strong, can extensively adapt to the needs loading.

5th, overvoltage protection effect is especially good.Because defining multi-stage protection, one is lightning protection stabilivolt in switch lightning protection unit There is the selectivity of multiple voltage stabilizing voltages, can be adjusted flexibly, this is very necessary to the electronic circuit of some low-voltages, because typically The pressure voltage of anti-thunder tube be all upper hectovolt, for Low-voltage Electronic circuit, very inadvisable, and the voltage stabilizing voltage of stabilivolt Select very well, can be within the scope of very low.Two is that relay response is rapid, can quickly thunderbolt be responded, so this The switch lightning protection level that invention selective relay and stabilivolt collectively constitute forms lightning protection.Three is Alternating Current Power Supply unit and direct current Audion in power supply unit is all high back-pressure large power triode, so the back-pressure ability that can bear is strong, four is that exchange two is steady The base stage of pressure audion has secondary pressure during overvoltage, thereby ensure that stablizing of base stage.

6th, there is broader adaptability than traditional regulated power supply, voltage is higher, lower ground side.All can normal work.

7th, simple in circuits, easily produces and debugging, and the debug point that reason one is because in circuit is few.Two are, easily quantify very much.Adjust Examination scope is loose, workable.

8th, cheap, wide adaptability, matching is strong.

Brief description

Fig. 1 is this practical each element catenation principle figure.

In figure：1.0th, Circuit Fault on Secondary Transformer input；1.1 bridge rectifier；1.2 filter capacitor；2.11st, first three end Manostat；2.21st, second three terminal regulator；2.12nd, the first isolating diode；2.22nd, the second isolating diode；2.5th, constant current Adjustment resistance；3.1st, lightning protection relay；3.2nd, lightning protection stabilivolt；3.3rd, the transfer contact of lightning protection relay；3.5th, lightning protection relay The normally-closed contact of device；4th, accumulator；5.1st, switch controllable silicon；5.2nd, controllable silicon excitation resistance；6.1st, control audion；6.2nd, control Transistor base resistance processed；6.3rd, control isolating diode one；6.4th, control isolating diode two；7.1st, negative pressure resistance one； 7.2nd, negative pressure electric capacity；7.3rd, negative pressure resistance two；7.4th, negative pressure steering diode；8.1st, alternate current operation audion；8.2nd, exchange work Inclined resistance on work；8.3rd, alternate current operation isolating diode；8.4th, pressure reduction diode；8.6th, alternate current operation voltage stabilizing branch road；8.7th, hand over Stream voltage ditty resistance；9.1st, exchange backup audion；9.3rd, exchange backup isolating diode；12nd, three end float type negative pressure control The output changing power supply of system.

Fig. 2 is one-way SCR internal junction former structure reason figure.

In figure：18.1st, it is silicon controlled anode, 18.2, the internal PNP triode of controllable silicon, 18.3, the internal NPN of controllable silicon Transistor base is also silicon controlled control pole；18.4th, the internal NPN triode of controllable silicon；18.5th, controllable silicon negative electrode；18.6, when Silicon controlled control pole is approximately zero and has the shunting without internal NPN triode during negative pressure.

Specific embodiment

Fig. 1 and Fig. 2 have expressed a kind of example of making.

First, select element：The voltage stabilizing value of lightning protection stabilivolt is higher than the output voltage values of rectification and lightning protection unit.

Alternate current operation audion, exchange backup audion are all NPN triodes, its back-pressure value >=300V.

In alternate current operation, the power of inclined resistance is 1W.

Switching controllable silicon is one-way SCR.

Two manostat in constant current floating charge unit adopt three terminal regulator, i.e. the integrated regulator of 78 series.

2nd, weld：Schematic diagram welding according to Fig. 1.

3rd, the inspection of energising and debugging.

（1）, one resistor-type fictitious load of welding, circuit is with two Diode series, then series resistance.Design series connection Resistance.Wherein series resistance should select high-power species.Replace being electrically charged pond with fictitious load.

During detection, the ammeter of circuit tester red pen string is in fictitious load, or red pen is just being connected on diode in fictitious load Pole, black pen connects diode cathode, the resistance of adjustment fictitious load, and the now written instructions of ammeter do not change.If correct, explanation Constant-current source is working properly.

The current value adjusting constant current floating charge unit is so as to constant current value meets the requirements.

（2）, detection debugging control location mode.

When rectification unit has output, control audion（6.1 in Fig. 1）Colelctor electrode should be low level, if incorrect, should subtract This control transistor base resistance few（6.2 in Fig. 1）.

（3）, detection debugging negative pressure unit state.

Use oscillograph inspection, test negative pressure electric capacity with oscillographic hot junction（7.2 in Fig. 1）Negative terminal, be connection negative pressure Resistance two；（7.3 in Fig. 1）One end, with wire first short circuit, open circuit controls audion afterwards（6.1 in Fig. 1）Base stage and transmitting Pole, now oscillograph should have micro- reaction of the negative pressure of transient state, such as incorrect, then be that the solder joint of negative pressure unit has rosin joint.Or it is negative The electric leakage of voltage capacitance is excessive.Or control isolating diode one（6.3 in Fig. 1）Rosin joint, or control isolating diode one （6.3 in Fig. 1）Polarity weldering is wrong.

（4）, detection debugging switching silicon controlled state.

Detect switching controllable silicon with circuit tester（5.1 in Fig. 1）Negative electrode.When connecting civil power, controllable silicon negative electrode no-voltage, As incorrect, control isolating diode two（6.4 in Fig. 1）Or polarity weldering is anti-, or rosin joint.Or control isolating diode one （6.3 in Fig. 1）Or polarity weldering is anti-, or rosin joint.

When disconnecting civil power, controllable silicon negative electrode has voltage, such as incorrect, then be controllable silicon excitation resistance（5.2 in Fig. 1）Empty Weldering, or controllable silicon damage.

（5）, detection debugging alternate current operation unit running voltage.

With circuit tester test, alternate current operation audion（8.1 in Fig. 2）Emitter-base bandgap grading, its voltage should meet the requirements, such as not be inconsistent Close, then should be by the method debugging of the voltage in detection debugging level pressure constant current unit.

（6）, detection debugging exchange backup units working condition.

Back up audion with circuit tester test, with red test cross stream of table（9.1 in Fig. 2）Emitter stage, its voltage ratio hand over Stream work audion（8.1 in Fig. 2）Transmitting few PN economize on electricity pressure, such as no-voltage is then exchange backup audion（In Fig. 2 9.1）Base stage rosin joint.Now it is connected in parallel on exchange backup isolating diode with ammeter（9.3 in Fig. 2）Two ends, now ammeter Display should be approximately zero.As incorrect, it is pressure reduction diode（8.4 in Fig. 2）It is short-circuited.

（7）, detection debugging lightning protection unit.

The normally-closed contact of broken lightning protection relay and the output of rear class, broken rectification output.Normally closed in lightning protection relay One resistance is connect on contact load.

Take over control the normally-closed contact of thunder relay, black meter pen earth lead with the red test pencil of circuit tester, electric main is connected on and contains Have on the socket of AC voltage regulator, raise the voltage of pressure regulator, in the range of certain value, the normally-closed contact of lightning protection relay has Voltage, is otherwise that the value of lightning protection stabilivolt is too low, raises the voltage of pressure regulator, after exceeding the voltage stabilizing value of lightning protection stabilivolt, general-purpose Table shows no-voltage, then explanation lightning protection stabilivolt starts, and the action of lightning protection relay is such as incorrect, then be that connection is wrong, or anti- Thunder relay damaged.

Claims (6)

1. three end float type vacuum cavitations change power supply, it is characterized in that：By rectification and lightning protection unit, Alternating Current Power Supply, constant current floating charge Unit, accumulator, controllable silicon switch unit, control unit, negative pressure unit collectively constitutes；

Wherein：Rectification is made up of with lightning protection circuit rectification circuit with lightning protection unit；Lightning protection circuit is continued by lightning protection stabilivolt and lightning protection Electrical equipment forms；

Rectification circuit is a bridge rectifier, and its output connects a filter capacitor；One line bud termination of lightning protection relay Connect the output of rectification circuit, thunder stabilivolt is taken over control to ground wire in another line bud termination, and the transfer contact of lightning protection relay connects rectification The output of circuit, the normally-closed contact of lightning protection relay is the output of rectification and lightning protection unit；

Alternating Current Power Supply isolates two poles by alternate current operation unit by resistance inclined in alternate current operation audion, alternate current operation, alternate current operation Pipe, pressure reduction diode, alternate current operation voltage stabilizing branch road, alternating voltage ditty resistance composition；

Exchange backup units by exchange backup audion, exchange backup isolating diode form；

Alternate current operation audion connects the output of rectification and lightning protection unit with the colelctor electrode exchanging backup audion, in alternate current operation partially Resistance is connected between colelctor electrode and the base stage of alternate current operation audion, pressure reduction audion be connected on the base stage of alternate current operation audion with Between the base stage of exchange backup audion, alternate current operation voltage stabilizing branch road is exchanging backup three poles with alternating voltage ditty resistant series Between the base stage of pipe and ground wire, alternate current operation audion with exchange backup audion emitter stage respectively connect after an isolating diode with Switching silicon controlled negative electrode is connected, and becomes the output changing power supply of three end float type vacuum cavitations；

By two manostat, two isolating diodes, constant current adjustment resistance collectively constitutes constant current floating charge unit：Two manostat defeated Enter end and all connect rectification output, the outfan of two manostat respectively connects an isolating diode and is followed by constant current adjustment resistance to electric power storage The positive pole in pond, the earth terminal of two manostat all connects the positive pole of accumulator, the minus earth line of accumulator；

Controllable silicon switch unit is formed with controllable silicon excitation resistance by switching controllable silicon：Switching silicon controlled anode connects accumulator positive Pole, controllable silicon excitation resistance is connected between switching silicon controlled anode and control pole, switches silicon controlled negative electrode and AC voltage-stabilizing In alternate current operation isolating diode in unit, exchange backup units, the negative pole of exchange backup isolating diode is connected, and becomes three ends The output changing power supply of float type vacuum cavitations；

TCU transfer control unit by control audion, control transistor base resistance, control isolating diode one, control isolation two poles Pipe two forms：Control a termination rectification of transistor base resistance and the output of lightning protection unit, another termination controls audion Base stage, controls the grounded emitter line of audion, controls the positive pole of isolating diode one just connecing in negative pressure unit negative pressure electric capacity Pole, controls the negative pole of isolating diode one to connect the colelctor electrode controlling audion, controls isolating diode two to be connected on switching controllable silicon Control pole and control audion colelctor electrode between；

Negative pressure unit is made up of negative pressure resistance one, negative pressure electric capacity, negative pressure resistance two, negative pressure steering diode：Negative pressure resistance one connects Between the positive pole and the positive pole of negative pressure electric capacity of accumulator, the negative pole of negative pressure electric capacity connects negative pressure resistance two and arrives ground wire, and negative pressure guides Diode is connected between switching silicon controlled control pole and the negative pole of negative pressure electric capacity.

2. three end float type vacuum cavitations according to claim 1 change power supply, it is characterized in that：The voltage stabilizing of lightning protection stabilivolt Value is higher than the output voltage values of rectification and lightning protection unit.

3. three end float type vacuum cavitations according to claim 1 change power supply, it is characterized in that：Alternate current operation audion, Exchange backup audion is all NPN triode, its back-pressure value >=300V.

4. three end float type vacuum cavitations according to claim 1 change power supply, it is characterized in that：Inclined resistance in alternate current operation Power be 1W.

5. three end float type vacuum cavitations according to claim 1 change power supply, it is characterized in that：Switching controllable silicon is unidirectional Controllable silicon.

6. three end float type vacuum cavitations according to claim 1 change power supply, it is characterized in that：In constant current floating charge unit Two manostat adopt three terminal regulator, i.e. the integrated regulator of 78 series.