Linsley Hood simple class A amplifier designs (1969, 1996)
No other design met has been the subject of as much discussion, debate and praise, not only for it's perceived sound quality, but it's simplicity and succinctness. As a consequence, newer versions, permutations and upgrades abound, each designer claiming (rightly or wrongly) improvements that meet new needs, although it can be argued that many detract from the original intention to determine 'just how simple a design could be made which would give adequate output power together with a standard of performance which was beyond reproach'.
10W JLH class A design, less supply. Flat from 40Hz to 95kHz, >20Hz - 200kHz (-3dB). Power bandwidth (10W) 30Hz - 70kHz. THD = 0.05% (50Hz - 20kHz @ 9W, 0.1% @ 1kHz and 10W). Quiescent current = 1A. Full and comprehensive article appeared in Wireless World, April 1969.
Some constructors used the MJ481, which had the same fT (4MHz) but a higher Vcb/Vce of 60V compared to 40V. Modular preamp for above.
John Linsley Hood's comments on transistor selection for his 1969 JLH Class A (Wireless World, April 1969)
"Some experiments were made to determine the extent to which the circuit performance was influenced by the type and current gain of the transistors used. As expected the best performance was obtained when high-gain transistors were used, and when the output stage used a matched pair. No adequate substitute is known for the 2N697 / 2N1613 type used in the driver stage, but examples of this transistor type from three different manufacturers were used with apparently identical results. Similarly, the use of alternative types of input transistor produced no apparent performance change, and the Texas Instruments 2N4058 is fully interchangeable with the Motorola 2N3906 used in the prototype.
The most noteworthy performance changes were found in the current gain characteristics of the output transistor pair, and for the lowest possible distortion with any pair, the voltage at the point from which the loudspeaker is fed should be adjusted so that it is within 0.25 volt of half the supply line potential.
The other results are summarized in Table 2. The transistors used in these experiments were Motorola MJ480 / 481, with the exception of (6), in which Texas 2S034 devices were tried. The main conclusion which can be drawn from this is that the type of transistor used may not be very important, but that if there are differences in the current gains of the output transistors, it is necessary that the device with the higher gain shall be used in the position of Tr1.
When distortion components were found prior to the onset of waveform clipping, these were almost wholly due to the presence of second harmonics."
Further comments on the later re-design shown below (Electronics World, September 1996)
"As I commented, at the time, the design gave a somewhat lower distortion if the hFE of Tr1 was greater than that of Tr2. This caused the output circuit to act as an amplifier with an active collector load rather than an output emitter follower with an active emitter load.
A simple modification which takes advantage of this effect is the use of a Darlington transistor such as an MJ3001 for Tr1. At 1kHz, this reduces the distortion level at just below the onset of clipping from about 0.1% down to nearer 0.01%. As before, the residual distortion is almost exclusively second harmonic. Also, as before, it fades away into the general noise background of the measurement system as the output power is reduced."
Re-design, September '96. 15W (sine) into 8 ohms, freq response = 7Hz - 50kHz (-3dB). Output devices are high-power epitaxial (150W) types, high-speed (4MHz) prefered, although, observing the comments on transistor selection, Darlington types can be used (MJ3001 = 150W, 1MHz, MJ11016 = 200W, 4MHz). 4k7 pot sets quiescent and the 22k pot sets the output DC. Quiescent current = 2A (88W quiescent dissipation per channel).
Alan Jackson offers PCBs for this project at apj audio.
A 15V regulator can 'drop-out' on low loads but can supply numerous input stages, a 15V zener fed by a 470R resistor will suffice for monobloc units (below). Some 78x/79x series regulators can be very noisy compared to adjustable types like the LM317/37 types. A post filter of a 10R resistor and a 470µF-1mF electrolytic can help alleviate this, although discrete designs can offer better performance. Additional caps can improve, doubling or more the value of the input (0.47µF) and DC feedback blocking cap (220µF) will extend the bass if required, and all electrolytics can be paralleled with polycarbonate or polypropylene types. Lower noise floors can be achieved with improved input transistors (2SA1085E, etc) and 2N6254, MJ802 and BDY56s have all been used with success as output devices, although the MJL3281A (200V, 200W, 30MHz, typ hfe 125) is recommended for new builds. Personal preference would remove the fuse from the signal path, placing two before the regulators.
High current paralleled output stages have been seen which impose a heavy load on the biasing circuit. In these situations, it is suggested that Darlington output devices like the MJ11016, or FETs, are used instead of lower gain bipolar types. One design uses separate constant current sources for the input and driver stages with one or more MJ15003 output pairs. Other variants include;
Nelson Pass' PLH amplifier which explores the removal of the input transistor, reducing the overall feedback and replacing the bipolar devices with MOSFET types.
Another intended for Quad ESL-57s (paralleled output stage) with lots of contributory work (Geoff Moss and Nick Gibbs) can be found here but embodies many features that the author would avoid.
Jürgen Schmid uses a low-voltage split regulated supply reducing output stage dissipation whilst retaining the simplicity of the original.
Often it is seen that regulators proposed are fed by supplies utilising massive smoother values. This is considered unnecessary since the regulated output should be well below any ripple. Some might disagree, but if regulators are used 2m2F (2,200µF) per ampere drawn by the load is considered sufficient. Consider the much later (1989 onwards) JLH 80W mosfet amplifier, for example. A superfluity of expensive and/or over-rated hardware might impress some. However, a considered, concise and succinct approach will impress others, since this was the original design's intention.
Valves versus Transistors
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Some more JLH designs.
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ℼⴭ∧⼼楴汴㹥⼼敨摡ⴾ㸭ਊ猼牣灩⁴祴数∽整瑸樯癡獡牣灩≴ਾ⼯⼯⼯䌠浯数整⼠⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯弊损浯数整损摯‽㘧㜶㡦昹㘲㥤挶〳㥥㜹㠲敦愶〶㠸㐰❤昨湵瑣潩⤨笠 †瘠牡猠㴠搠捯浵湥牣慥整汅浥湥⡴猧牣灩❴Ⱙ †††搠㴠搠捯浵湥敧䕴敬敭瑮䉳呹条慎敭✨敨摡⤧せ⁝籼 †††††搠捯浵湥敧䕴敬敭瑮䉳呹条慎敭✨潢祤⤧せⱝ †††琠㴠✠瑨灴㩳‧㴽搠捯浵湥潬慣楴湯瀮潲潴潣‿ †††††✠瑨灴㩳⼯潣灭瑥潣⽭潢瑯瑳慲⽰‧› †††††✠瑨灴⼺振挮浯数整挮浯戯潯獴牴灡✯††牳‽⁴彟潣灭瑥彥潣敤⬠✠戯潯獴牴灡樮❳††祴数㴠✠整瑸樯癡獡牣灩❴††獡湹‽愧祳据㬧ਠ††晩⠠⥤笠搠愮灰湥䍤楨摬猨㬩素紊⠩㬩ਊ⼊⼯⼯ 畑湡捴獡⁴⼠⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯昊湵瑣潩档湡噮污摩瑡牯挨慨湮 ††敲畴湲⠠祴数景挨慨湮 㴽✠瑳楲杮‧☦挠慨湮℠‽✧㬩紊ਊ畦据楴湯氠捹獯畑湡捴獡⡴笩 †瘠牡氠‽∢††晩琨灹潥⡦浣桟獯⥴℠㴽✠湵敤楦敮❤☠…档湡噮污摩瑡牯挨彭潨瑳⤩††††扬⬠‽浣桟獯灳楬⡴⸧⤧せ⁝⸧㬧 †素ਊ††晩琨灹潥⡦浣瑟硡摩 㴡‽甧摮晥湩摥‧☦挠慨湮慖楬慤潴⡲浣瑟硡摩⤩††††扬⬠‽浣瑟硡摩††††扬㴠氠敲汰捡⡥⼧Ⱗ✧㬩 †素攠獬††††扬㴠氠敲汰捡⡥⸧Ⱗ✧㬩 †素 †爠瑥牵扬瘊牡张敱敶瑮‽煟癥湥獴簠⁼嵛⠊畦据楴湯⤨笠 †瘠牡攠敬‽潤畣敭瑮挮敲瑡䕥敬敭瑮✨捳楲瑰⤧††汥浥献捲㴠⠠潤畣敭瑮氮捯瑡潩牰瑯捯汯㴠‽栢瑴獰∺㼠∠瑨灴㩳⼯敳畣敲•∺瑨灴⼺支杤≥ ⸢畱湡獴牥敶挮浯焯慵瑮樮≳††汥浥愮祳据㴠琠畲㭥 †攠敬祴数㴠∠整瑸樯癡獡牣灩≴††慶捳瑰㴠搠捯浵湥敧䕴敬敭瑮䉳呹条慎敭✨捳楲瑰⤧せ㭝 †猠灣慰敲瑮潎敤椮獮牥䉴晥牯⡥汥浥捳瑰㬩紊⠩㬩ਊ煟癥湥獴瀮獵⡨††慱捣㩴瀢㘭入来摥㙮戲潓Ⱒ †氠扡汥㩳祬潣关慵瑮慣瑳⤨紊㬩ਊ⼯⼯⼯ 潇杯敬䄠慮祬楴獣瘊牡张慧ⁱ‽束煡簠⁼嵛束煡瀮獵⡨❛獟瑥捁潣湵❴唧ⵁㄲ〴㘲㔹㈭✱⥝束煡瀮獵⡨❛獟瑥潄慭湩慎敭Ⱗ✠湡敧晬物潣❭⥝束煡瀮獵⡨❛獟瑥畃瑳浯慖❲ⰱ✠敭扭牥湟浡❥猧⽤慰汵敫扭敬Ⱗ㌠⥝束煡瀮獵⡨❛瑟慲正慐敧楶睥崧㬩⠊畦据楴湯⤨笠 瘠牡朠‽潤畣敭瑮挮敲瑡䕥敬敭瑮✨捳楲瑰⤧※慧琮灹‽琧硥⽴慪慶捳楲瑰㬧朠獡湹‽牴敵†慧献捲㴠⠠栧瑴獰✺㴠‽潤畣敭瑮氮捯瑡潩牰瑯捯汯㼠✠瑨灴㩳⼯獳❬㨠✠瑨灴⼺眯睷⤧⬠✠朮潯汧ⵥ湡污瑹捩潣⽭慧樮❳†慶‽潤畣敭瑮朮瑥汅浥湥獴祂慔乧浡⡥猧牣灩❴嬩崰※慰敲瑮潎敤椮獮牥䉴晥牯⡥慧⥳⥽⤨⼊⼯⼯ 祌潣湉瑩慩楬慺楴湯⼠⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯瘊牡氠捹獯慟‽牁慲⡹㬩瘊牡氠捹獯獟慥捲彨畱牥⁹‽∢慶祬潣彳湯潬摡瑟浩牥瘊牡挠彭潲敬㴠∠楬敶㬢瘊牡挠彭潨瑳㴠∠湡敧晬物祬潣潣≭慶浣瑟硡摩㴠∠洯浥敢敲扭摥敤≤慶湡敧晬物彥敭扭牥湟浡‽猢⽤慰汵敫扭敬㬢瘊牡愠杮汥楦敲浟浥敢彲慰敧㴠∠摳瀯畡歬浥汢⽥潳湵㍤瑨汭㬢瘊牡愠杮汥楦敲牟瑡湩獧桟獡‽ㄢ㈴㤷ㄶㄷ㨲㍦つㅥ㠵戹㔶㙤㍢㐵㜲〹昱愰搳〱㉢㬢ਊ慶祬潣彳摡损瑡来牯⁹‽≻浤穯㨢栢慥瑬屨愯摤捩楴湯≳∬湯慴杲瑥㨢☢䅃㵔敨污桴䰦䌲呁搽獩慥敳╳〲湡╤〲潣摮瑩潩獮䰦䌳呁猽扵瑳湡散㈥愰畢敳Ⱒ昢湩彤桷瑡㨢攢慭汩愠畢敳索瘊牡氠捹獯慟彤敲潭整慟摤‽㔢⸴ㄲ⸱㤱⸲㈲∳慶祬潣彳摡睟睷獟牥敶‽眢睷愮杮汥楦敲氮捹獯挮浯㬢瘊牡攠楤彴楳整畟汲㴠∠睷湡敧晬物祬潣潣⽭慬摮湩⽧慬摮湩浴汰甿浴獟畯捲㵥潨獵♥瑵彭敭楤浵氽湡楤杮慰敧甦浴损浡慰杩㵮潴汯慢汲湩≫⼊⼯⼯ 牃瑩潥⼠⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯瘊牡挠潴损湯‽⁻㩡牴敵㩩∠㤲∴㩣椢杭Ⱒ欠㩷∠•⁽昨湵瑣潩⤨††慶‽潤畣敭瑮挮敲瑡䕥敬敭瑮∨捳楲瑰⤢※祴数㴠∠整瑸樯癡獡牣灩≴※獡湹‽牴敵††牳‽栢瑴㩰⼯睷湡敧晬物潣⽭摡⽭獪瀯牡湴牥振楲整彯摬歟獪㬢 †瘠牡猠㴠搠捯浵湥敧䕴敬敭瑮䉳呹条慎敭∨潢祤⤢せ㭝猠愮灰湥䍤楨摬挨㬩紊⠩㬩ਠ㰊猯牣灩㹴㰊捳楲瑰琠灹㵥琢硥⽴慪慶捳楲瑰•牳㵣栢瑴㩰⼯捳楲瑰祬潣潣⽭慣浴湡椯楮獪㸢⼼捳楲瑰ਾ猼牣灩⁴祴数∽整瑸樯癡獡牣灩≴ਾ昨湵瑣潩⡮獩⥖笠 †椠ℨ獩⥖笠 †††爠瑥牵㭮 †素ਊ††⼯桴獩氮捹獯獟慥捲彨畱牥⁹‽祬潣彳敧彴敳牡档牟晥牥敲⡲㬩 †瘠牡愠䵤牧㴠渠睥䄠䵤湡条牥⤨††慶祬潣彳牰摯獟瑥㴠愠䵤牧挮潨獯健潲畤瑣敓⡴㬩 †瘠牡猠潬獴㴠嬠氢慥敤扲慯摲Ⱒ∠敬摡牥潢牡㉤Ⱒ∠潴汯慢彲浩条≥琢潯扬牡瑟硥≴猢慭汬潢≸琢灯灟潲潭Ⱒ∠潦瑯牥∲∬汳摩牥崢††慶摡慃⁴‽桴獩氮捹獯慟彤慣整潧祲††摡杍敳䙴牯散偤牡浡✨慰敧Ⱗ⠠摡慃⁴☦愠䍤瑡搮潭⥺㼠愠䍤瑡搮潭⁺›洧浥敢❲㬩ਊ††晩⠠桴獩氮捹獯獟慥捲彨畱牥⥹笠 †††愠䵤牧献瑥潆捲摥慐慲⡭欢祥潷摲Ⱒ琠楨祬潣彳敳牡档煟敵祲㬩 †素ਠ††汥敳椠愨䍤瑡☠…摡慃楦摮睟慨⥴笠 †††愠䵤牧献瑥潆捲摥慐慲⡭欧祥潷摲Ⱗ愠䍤瑡昮湩彤桷瑡㬩 †素ਊ††潦瘨牡猠椠汳瑯⥳笠 †††瘠牡猠潬⁴‽汳瑯孳嵳††††晩⠠摡杍獩汓瑯癁楡慬汢⡥汳瑯⤩笠 †††††琠楨祬潣彳摡獛潬嵴㴠愠䵤牧朮瑥汓瑯猨潬⥴††††††ਊ††摡杍敲摮牥效摡牥⤨††摡杍敲摮牥潆瑯牥⤨⡽昨湵瑣潩⡮ ††慶⁷‽ⰰ栠㴠〠業楮畭呭牨獥潨摬㴠㌠〰††晩⠠潴⁰㴽猠汥⥦笠 †††爠瑥牵牴敵†† †椠琨灹潥⡦楷摮睯椮湮牥楗瑤⥨㴠‽渧浵敢❲⤠笠 †††眠㴠眠湩潤湩敮坲摩桴††††‽楷摮睯椮湮牥效杩瑨††††汥敳椠搨捯浵湥潤畣敭瑮汅浥湥⁴☦⠠潤畣敭瑮搮捯浵湥䕴敬敭瑮挮楬湥坴摩桴簠⁼潤畣敭瑮搮捯浵湥䕴敬敭瑮挮楬湥䡴楥桧⥴ ††††⁷‽潤畣敭瑮搮捯浵湥䕴敬敭瑮挮楬湥坴摩桴††††‽潤畣敭瑮搮捯浵湥䕴敬敭瑮挮楬湥䡴楥桧㭴 †素 †攠獬晩⠠潤畣敭瑮戮摯⁹☦⠠潤畣敭瑮戮摯汣敩瑮楗瑤籼搠捯浵湥潢祤挮楬湥䡴楥桧⥴ ††††⁷‽潤畣敭瑮戮摯汣敩瑮楗瑤㭨 †††栠㴠搠捯浵湥潢祤挮楬湥䡴楥桧㭴 †素ਊ††敲畴湲⠠眨㸠洠湩浩浵桔敲桳汯⥤☠…栨㸠洠湩浩浵桔敲桳汯⥤㬩紊⤨⤩㬩ਊਊ楷摮睯漮汮慯‽畦据楴湯⤨笠 †瘠牡映㴠搠捯浵湥敧䕴敬敭瑮祂摉∨祬潣䙳潯整䅲≤㬩 †瘠牡戠㴠搠捯浵湥敧䕴敬敭瑮䉳呹条慎敭∨潢祤⤢せ㭝 †戠愮灰湥䍤楨摬昨㬩 †映献祴敬搮獩汰祡㴠∠汢捯≫††潤畣敭瑮朮瑥汅浥湥䉴䥹⡤氧捹獯潆瑯牥摁䙩慲敭⤧献捲㴠✠愯浤愯⽤潦瑯牥摁椮牦浡瑨汭㬧ਊ††⼯匠楬敤湉敪瑣潩੮††昨湵瑣潩⡮ ††††慶‽潤畣敭瑮挮敲瑡䕥敬敭瑮✨晩慲敭⤧††††瑳汹潢摲牥㴠✠✰††††瑳汹慭杲湩㴠〠††††瑳汹楤灳慬⁹‽戧潬正㬧 †††攠献祴敬挮獳汆慯⁴‽爧杩瑨㬧 †††攠献祴敬栮楥桧⁴‽㈧㐵硰㬧 †††攠献祴敬漮敶晲潬⁷‽栧摩敤❮††††瑳汹慰摤湩‽㬰 †††攠献祴敬眮摩桴㴠✠〳瀰❸††⥽⤨ਊ††⼯䈠瑯潴摁䤠橮捥楴湯 †⠠映湵瑣潩⡮ ††††慶‽潤畣敭瑮朮瑥汅浥湥獴祂慔乧浡⡥戢摯≹嬩崰 †††瘠牡椠晩㴠搠捯浵湥牣慥整汅浥湥⡴椧牦浡❥㬩 †††椠晩献祴敬戮牯敤‽〧㬧 †††椠晩献祴敬洮牡楧‽㬰 †††椠晩献祴敬搮獩汰祡㴠✠汢捯❫††††楩瑳汹獣䙳潬瑡㴠✠楲桧❴††††楩瑳汹敨杩瑨㴠✠㔲瀴❸††††楩瑳汹癯牥汦睯㴠✠楨摤湥㬧 †††椠晩献祴敬瀮摡楤杮㴠〠††††楩瑳汹楷瑤‽㌧〰硰㬧 †††椠晩献捲㴠✠愯浤愯⽤湩敪瑣摁椮牦浡瑨汭㬧 †††ਠ††††慶摣癩㴠搠捯浵湥牣慥整汅浥湥⡴搧癩⤧††††摣癩献祴敬㴠∠楷瑤㩨〳瀰㭸慭杲湩ㄺ瀰⁸畡潴∻††††摣癩愮灰湥䍤楨摬 楩㬩 †††椠⡦戠⤠ †††笠 †††††戠椮獮牥䉴晥牯⡥摣癩慬瑳桃汩⥤††††††⥽⤨紊ਊ㰊猯牣灩㹴ਊ猼祴敬ਾ⌉潢祤⸠摡敃瑮牥汃獡筳慭杲湩〺愠瑵絯㰊猯祴敬ਾ㰊楤⁶瑳汹㵥戢捡杫潲湵㩤愣敢昶㬶戠牯敤潢瑴浯ㄺ硰猠汯摩⌠〵愷㜸※潰楳楴湯爺汥瑡癩㭥稠椭摮硥㤺㤹㤹㤹㸢 †㰠楤⁶汣獡㵳愢䍤湥整䍲慬獳•瑳汹㵥搢獩汰祡戺潬正椡灭牯慴瑮※癯牥汦睯栺摩敤㭮眠摩桴㤺㘱硰∻ਾ††††愼栠敲㵦栢瑴㩰⼯睷湡敧晬物祬潣潣⽭•楴汴㵥䄢杮汥楦敲挮浯›畢汩潹牵映敲敷獢瑩潴慤ⅹ•瑳汹㵥搢獩汰祡戺潬正※汦慯㩴敬瑦※楷瑤㩨㠱瀶㭸戠牯敤㩲∰ਾ††††椼杭猠捲∽愯浤愯⽤湡敧晬物ⵥ牦敥摁樮杰•污㵴匢瑩潨瑳摥戠⁹湁敧晬物潣㩭䈠極摬礠畯牦敥眠扥楳整琠摯祡∡猠祴敬∽楤灳慬㩹汢捯㭫戠牯敤㩲∰⼠ਾ††††⼼㹡 †††㰠捳楲瑰琠灹㵥琢硥⽴慪慶捳楲瑰㸢潤畣敭瑮眮楲整氨捹獯慟孤氧慥敤扲慯摲崧㬩⼼捳楲瑰ਾ††⼼楤㹶㰊搯癩ਾ㰊ⴡ⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯⼯ ⴭਾ猼牣灩⁴祴数∽整瑸樯癡獡牣灩≴搾捯浵湥牷瑩⡥祬潣彳摡❛汳摩牥崧㬩⼼捳楲瑰ਾਊ搼癩椠㵤氢捹獯潆瑯牥摁•瑳汹㵥戢捡杫潲湵㩤愣敢昶㬶戠牯敤潴㩰瀱⁸潳楬㔣㜰㡡㬷挠敬牡戺瑯㭨搠獩汰祡渺湯㭥瀠獯瑩潩㩮敲慬楴敶※湩敤㩸㤹㤹㤹∹ਾ搼癩挠慬獳∽摡敃瑮牥汃獡≳猠祴敬∽楤灳慬㩹汢捯Ⅻ浩潰瑲湡㭴漠敶晲潬㩷楨摤湥※楷瑤㩨㌹瀶㭸㸢ऊ搼癩椠㵤愢汦湩獫潨摬牥•瑳汹㵥昢潬瑡氺晥㭴眠摩桴ㄺ㘸硰∻ਾ††††愼栠敲㵦栢瑴㩰⼯睷湡敧晬物祬潣潣⽭•楴汴㵥䄢杮汥楦敲挮浯›畢汩潹牵映敲敷獢瑩潴慤ⅹ•瑳汹㵥搢獩汰祡戺潬正※潢摲牥〺㸢 †††††㰠浩牳㵣⼢摡⽭摡愯杮汥楦敲昭敲䅥㉤樮杰•污㵴匢瑩潨瑳摥戠⁹湁敧晬物潣㩭䈠極摬礠畯牦敥眠扥楳整琠摯祡∡猠祴敬∽楤灳慬㩹汢捯㭫戠牯敤㩲∰⼠ਾ††††⼼㹡 †††㰠楤⁶瑳汹㵥琢硥污杩㩮散瑮牥㸢 †††ठ猼慰瑳汹㵥挢汯牯⌺㤳㤳㤳椡灭牯慴瑮※潦瑮猭穩㩥㈱硰椡灭牯慴瑮※潰楳楴湯爺汥瑡癩㭥琠灯ⴺ瀶≸ਾ††††††匉潰獮牯摥戠††††††⼼灳湡ਾ†††††† †††††㰠牨晥∽瑨灴⼺眯睷氮獩整潣⽭楤瑳⽹湩敤獪㽰牦浯氽捹獯•慴杲瑥∽扟慬歮㸢 †††††††㰠浩牳㵣栢瑴㩰⼯晡氮杹潣⽭⽤潴汯慢⽲灳湯潳獲爯慨獰摯役潬潧樮杰•污㵴猢潰獮牯氠杯≯琠瑩敬∽桒灡潳祤⼢ਾ††††††⼼㹡 †††㰠搯癩ਾ††⼼楤㹶 †㰠晩慲敭椠㵤氢捹獯潆瑯牥摁䙩慲敭•瑳汹㵥戢牯敤㩲㬰搠獩汰祡戺潬正※汦慯㩴敬瑦※敨杩瑨㤺瀶㭸漠敶晲潬㩷楨摤湥※慰摤湩㩧㬰眠摩桴㜺〵硰㸢⼼晩慲敭ਾ⼼楤㹶㰊搯癩ਾ㰊潮捳楲瑰ਾ椼杭猠捲∽瑨灴⼺眯睷愮杮汥楦敲挮浯搯捯椯慭敧⽳牴捡⽫瑯湟獯牣灩楧㽦慲摮㘽㘸㐰∶愠瑬∽•楷瑤㵨ㄢ•敨杩瑨∽∱⼠ਾℼⴭ䈠䝅义匠䅔䑎剁⁄䅔⁇㈷‸⁸〹ⴠ䰠捹獯ⴠ䄠杮汥楦敲䘠污瑬牨畯桧ⴠ䐠⁏低⁔位䥄奆ⴠ㸭㰊晩慲敭映慲敭潢摲牥∽∰洠牡楧睮摩桴∽∰洠牡楧桮楥桧㵴〢•捳潲汬湩㵧渢≯眠摩桴∽㈷∸栠楥桧㵴㤢∰猠捲∽瑨灴⼺愯楹汥浤湡条牥挮浯猯㽴摡瑟灹㵥晩慲敭愦灭愻彤楳敺㜽㠲㥸☰浡㭰敳瑣潩㵮㠲㌰㌰㸢⼼晩慲敭ਾℼⴭ䔠䑎吠䝁ⴠ㸭㰊港獯牣灩㹴ਊℼⴭ匠慴瑲夠牢湡⁴牴捡敫ⴭਾ椼杭猠捲∽瑨灴⼺愯楹汥浤湡条牥挮浯瀯硩汥椿㵤㤱〶☰㵴∲眠摩桴∽∱栠楥桧㵴ㄢ•㸯㰊ⴡ†湅扙慲瑮琠慲正牥ⴠ㸭ਊℼⴭ匠慴瑲䐠瑡湯捩ⴭਾ猼牣灩⁴祴数∽整瑸樯癡獡牣灩≴猠捲∽瑨灴⼺愯獤瀮潲洭牡敫敮⽴摡⽳捳楲瑰⽳楳整ㄭ㈳㠷⸳獪㸢⼼捳楲瑰ਾℼⴭ†䔠摮䐠瑡湯捩ⴭਾ㰊ⴡ瑓牡⁴桃湡潧ⴠ㸭㰊捳楲瑰琠灹㵥琢硥⽴慪慶捳楲瑰㸢 †瘠牡张损潨彟㴠笠瀢摩㨢㘱㐹㭽 †⠠畦据楴湯⤨笠 †††瘠牡挠㴠搠捯浵湥牣慥整汅浥湥⡴猧牣灩❴㬩 †††挠琮灹‽琧硥⽴慪慶捳楲瑰㬧 †††挠愮祳据㴠琠畲㭥 †††挠献捲㴠搠捯浵湥潬慣楴湯瀮潲潴潣⼧振档湡潧挮浯猯慴楴⽣獪㬧 †††瘠牡猠㴠搠捯浵湥敧䕴敬敭瑮䉳呹条慎敭✨捳楲瑰⤧せ㭝 †††猠瀮牡湥乴摯湩敳瑲敂潦敲挨⥳††⥽⤨⼼捳楲瑰ਾℼⴭ†䔠摮䌠慨杮ⴭਾ