Quad 405 schematic evolution 电路原理图.pdf

3.3p C3 1n C6 + 3V 100u C2 C7 330p ZTX304 Tr2 6.8u L1 + C14 10,000u + 100u C5 Tr10 BDY77 IS920 D3 ZTX504 Tr4 Tr9 BDY77 D6 IS920 40872 Tr8 C11 330p 40872 Tr7 IS920 D5 C8 120p 330p C9 D4 IS920 4A F2 4A F1 L2 3u + 47u C10 redD8 + 10,000u C13 47n C4 LR120C D1 D2 LR120C R35 0.08R R40 2.7k 2W Tr5 BC214C 220k R1 22k R3 C1 680n 10k R4 330k R6 10k R5 R8 3.3k 560R R31 R30 560R 8.2k R29 R33 22R BC214C Tr6 22R R25 75R R28 R38 47R 1kR20 1kR21 R23 3.3k 8.2k R27 22R R24 75R R26 R22 270R R18 3.3k 3.3k R17 R12 3.3k R10 1k - 2 + 3 4 6 7 8 1 IC1LM301A 180R R9 1.8k R11 R13 22k 560R R14 100R R15 BC214C Tr1 3.3k R19 Tr3 ZTX504 0.08R R36 R37 22R 180R R16 R2 2.2R 3.3k R7 100n C12SK2 R39 10R Revision: Page 1 of 1 Page Size: Checked:Drawn: K. Snook A42 QUAD 405 M12333 iss. 2 2 Mar 2002 -50V +50V Input ClassA-out Dumpers-out Output d.c. feedback QUAD 405 Schematic as published in Wireless World Dec.1975 to support the article “Current Dumping Audio Amplifier” by P J Walker ot the Acoustic Manufacturing Co. Ltd. (Q.U.A.D.) First Production PCB M12368 iss. 5 ? R11 is Limiter for ESL57 Speakers QUAD 405 Evolution September 2011 keithsnook.eu redD8 IS920 D4 D3 IS920 Tr10 BDY77 40872 Tr8 BC214C Tr1 D1 LR120C 3.3p C3 1n C6 + 3V 100u C2 330p C7 + C13 10,000u 47n C4 + 47u C10 + C5 100u 6.8u L1 Tr4 ZTX504 Tr3 ZTX504 D6 IS920 D2 LR120C + C14 10,000u 220k R1 22k R4 22k R3 C1 680n 330k R6 3.3k R8 - 2 + 3 4 6 7 8 1 IC1LM301A R12 3.3k R10 1k 220R R9R13 22k 180R R16 3.3k R17 1.8k R11 R23 1.2k 8.2k R29 22R R25 75R R28 R14 560R 8.2k R27 0.08R R35 Tr9 BDY77 BC214C Tr5 22R R24 75R R26 270R R22 R18 3.3k R15 100R 3.3k R7 R40 2.7k 2W 0.08R R36 R37 22R 47n C18 FS2 4A FS1 4A Tr6 BC214C R33 22R 560R R31 R30 560R C11 330p 40872 Tr7 D5 IS920 1kR21 1kR20 ZTX304 Tr2 C8 120p 10R R2 4.7k R5 47R R38 3u L2 Speaker 100n C12 R39 10R 1Revision: Page 1 of 1 Page Size: Checked:Drawn: K. Snook8 Feb 2003 A4 QUAD 405 - M12333 iss. 3 +50V -50V Input Dumpers-out ClassA-out Output d.c. feedback R11 is Limiter for ESL57 Speakers M12368 iss. 7 PCBs were used for serial numbers from ? to 9000 Input ground must be connected to chassis at DIN socket to prevent oscillation see - R39 C12 Note: This point is connected to input ground but ideally should be connected to other side of R2 keithsnook.eu Speaker 4A F1 redD8 SC1418 T2 IS920 D4 D3 IS920 40872 Tr7 Tr9 BDY77 BC214C Tr1 D1 LR120C 3.3p C3 330p C7 + C13 10,000u 100n C12 47n C4 + 47u C10 L3 6.8u + C5 100u 100n C15 6.8u L1 Tr4 ZTX504 Tr3 ZTX504 D6 IS920 D5 IS920 D2 LR120C + C14 10,000u C16 100n 4A F2 220k R1 330k R6 R12 3.3k R10 1k 3.3k R7 22k R3 C1 680n 22k R4 3.3k R8 4.7k R5 560R R31 R30 560R R23 1.2k 3.3k R17 220R R9 R14 560R R15 100R R18 3.3k270R R22 R13 22k 1.8k R11 Bc214C Tr6 22R R25 75R R28 8.2k R29 R33 22R R37 22R 0.08R R36 8.2k R27 1kR21 1kR20 ZTX304 Tr2 C11 330p C8 120p 47R R38 L2 3u R41 22R 0.08R R35 BC214C Tr5 22R R24 75R R26 22R R43 2N4992 T1 10u C17 R42 15k R40 2.7k 2W Tr10 BDY77 40872 Tr8 C19 1n + 3V 100u C2 - 2 + 3 4 6 7 8 1 IC1LM301A 1n C6 10R R2 180R R16 R39 10R 1Revision: Page 1 of 1 Page Size: Checked:Drawn: K. Snook QUAD 405 - M12333 iss. 4 8 Feb 2003 A4 +50V -50V Input Dumpers-out ClassA-out Output d.c. feedback R11 is Limiter for ESL57 Speakers M12368 iss.9 PCBs used for serial numbers from 9000 to 29000 Input ground must be connected to chassis at DIN socket to prevent oscillation see - R39 C12 Note: This point is connected to input ground but ideally should be connected to other side of R2 keithsnook.eu Speaker 4A F1 red D8 SC1418 T2 IS920 D4 D3 IS920 40872 Tr7 Tr9 BDY77 BC214C Tr1 3.3p C3 330p C7 + C13 10,000u 100n C12 47n C4 + 47u C10 L3 6.8u + C5 100u 100n C15 6.8u L1 Tr4 ZTX504 Tr3 ZTX504 D6 IS920 D5 IS920 + C14 10,000u C16 100n 4A F2 220k R1 330k R6 R12 3.3k 3.3k R7 22k R3 C1 680n 22k R4 3.3k R8 4.7k R5 560R R31 R30 560R R23 1.2k 3.3k R17 220R R9 R14 560R R15 100R R18 3.3k270R R22 R13 22k 1.8k R11 Bc214C Tr6 22R R25 75R R28 R33 22R R37 22R 1kR21 1kR20 ZTX304 Tr2 C11 330p C8 120p 47R R38 L2 3u R41 22R BC214C Tr5 22R R24 75R R26 22R R43 2N4992 T1 10u C17 R42 15k R40 2.7k 2W Tr10 BDY77 40872 Tr8 C19 1n LR150C D1 R35 0.091R R36 0.091R R29 15k 15k R27 R10 1k8 LR150C D2 + 3V 100u C2 - 2 + 3 4 6 7 8 1 IC1LM301A 1n C6 10R R2 180R R16 R39 10R Revision: Page 1 of 1 Page Size: Checked:Drawn:K. Snook QUAD 405 - M12333 iss. 5 8 Feb 2003 A42 +50V -50V Input Dumpers-out ClassA-out Output -15V +15V d.c. feedback Input ground must be connected to chassis at DIN socket to prevent oscillation see - R39 C12 R11 is Limiter for ESL57 Speakers M12368 iss.9 &10 PCBs used for serial numbers from 29000 to 59000 iss. 10 PCBs same as issue 9 except power transistor pads modified for production. Note: This point is connected to input ground but ideally should be connected to other side of R2 keithsnook.eu 330p C7 47n C4 ZTX304 Tr2 Speaker SC1418 T2 C16 100n 4A F2 4A F1 + C14 10,000u D1 BZY88-C15 D8 BZY88-C5V6 100n C15 + C13 10,000u red D8 1N4003 D11 L4 22u IS920 D4 + 100u C5 IS920 D5 IS920 D3 L2 3u + 47u C10 1N4003 D10C11 1n C8120p ZTX504 Tr4 Tr5 BC214C 40872 Tr7 R8 3.3k 4.7k R5 R27 15k 15k R42 2.7k R40 2W R35 0.091R 220k R1 22k R3 C1 680n 22k R4 330k R6 R12 3.3k R10 560R D2 BZY88-C15 R29 15k 560R R31R33 22R R25 22R R28 75R R37 15R 40872 Tr8 BC214C Tr6 IS920 D6 R30 560R Tr10 2SD424 2SD424 Tr9 1kR20 1kR21 R38 47R 100n C12 0.091R R36 3.3k R17 22R R43 10u C17 2N4992 T1 R23 1.2k 22k R13 10R R2 R14 470R R15 100R BC214C Tr1 R18 3.3k Tr3 ZTX504 270R R22 22R R24 R26 75R 3.3k R7 C3 3p3 1n C6 - 2 + 3 4 6 7 8 1 TL071IC1 + 3V 100u C2 D9BZY88-C8V2 R16 180R R39 10R Revision: Page 1 of 1 Page Size: Checked:Drawn: K. Snook QUAD 405 - M12333 iss. 6 2A4 4002hc raM21 +50V -50V InputClassA-out Output Dumpers-out Limiter d.c. feedback M12565 iss. 3 PCBs were used for serial numbers 59001 to 62500 and 57301 to 57600 Grounded at input DIN socket keithsnook.eu Speaker + C14 10,000u + C13 10,000u 100n C12 22u L4 redD8 SC1418 T2 C16 100n ZTX304 Tr2 D8 BZY88-C5V6 47n C4 330p C7 + 47u C18 + 100u C5 D1 BZY88-C15 BCW61 2.7k 39V 3.3k 10k 1k68R BCW60 330k R6 3.3k R7 10R R2 22k R13 220k R1 22k R4 22k R3 C1 680n R12 3.3k 3.3k R17 15k R42 22R R43 10u C17 2N4992 T1 R40 2.7k 2W 270R R22R15 100R R5 4.7k R37 15R D6 IS920 R30 560R R14 470R 1 32 4 5 Q05 NIA N1 + C19 47u + 47u C10 1 32 4 5 Q05 NIA N2 560R R31R33 22R 1N4003 D11 1N4003 D10 D5 IS920 1kR20 1kR21 L2 3u C8120p R38 47R 2SD424 Tr9 Tr10 2SD424 Tr8 40872 40872 Tr7 100n C15 4A FS1 4A FS2 R10 560R Tr4 ZTX504 Tr3 ZTX504 BC214C Tr1 R18 3.3k 1n C11 R23 1.2k 0.18R R36 0.18R R35 R8 3.3k D2 BZY88-C15 + 3V 100u C2 6 + 3 - 2 V+ 7 V- 4 TL071 IC1 C6 1n D9BZY88-C8V2 180R R16 R39 10R BCW61 1.5k BCW60 1Revision: Page 1 of 1 Page Size: Checked:Drawn: K. Snook A4 8 Feb 2003 QUAD 405 - M12333 iss. 7 -50V +50V 3 5 2 Input Dumpers-out ClassA-out Limiter 41 Output d.c. feedback M12565 iss. 5 PCBs (QUAD 405-2) were used for serial numbers from 62501 to 66699 Grounded at input DIN socket Current Limit Network keithsnook.eu Speaker + C14 10,000u + C13 10,000u redD8 C16 100n ZTX304 Tr2 D8 BZY88-C5V6 47n C4 330p C7 + 47u C18 + 100u C5 D1 BZY88-C15 BCW61 2.7k 39V 3.3k 1.5k 10k 1k68R BCW60 330k R6 3.3k R7 10R R2 22k R13 220k R1 22k R4 22k R3 C1 680n R12 3.3k 3.3k R17 22R R43 10u C17 2N4992 T1 R40 2.7k 2W 270R R22R15 100R R37 15R R30 560R R14 470R 560R R31R33 22R C8120p Tr10 2SD424 Tr8 40872 40872 Tr7 100n C15 4A FS1 4A FS2 R10 560R Tr4 ZTX504 Tr3 ZTX504 BC214C Tr1 R18 3.3k 1n C11 R23 1.2k D2 BZY88-C15 R8 3.3k 4n7 C20 0.18R R35 1N4003 D13 D5 1N4003 D6 1N4003 + C19 47u + 47u C10 1 32 4 5 Q05 NIA N2 0.18R R36 1N4003 D11 1N4003 D10 1kR21 1kR20 2SD424 Tr9 100n C12 SC1418 T2 15k R42 R5 4.7k R38 47R 1 32 4 5 Q05 NIA N1 L2 3u R44 75R 22u L4 + 3V 100u C2 6 + 3 - 2 V+ 7 V- 4 TL071 IC1 C6 1n D9BZY88-C8V2 180R R16 R39 10R BCW60 BCW61 1Revision: Page 1 of 1 Page Size: Checked:Drawn: K. Snook A4 8 Feb 2003 QUAD 405 - M12333 iss. 8 -50V +50V 3 5 2 Input Limiter 41 ClassA-out Dumpers-out Output Grounded at input DIN socket d.c. feedback Current Limit Network M12565 iss. 6 PCBs (QUAD 405-2) were used for serial numbers from 69700 to 72500 keithsnook.eu Speaker + C14 10,000u + C13 10,000u redD8 C16 100n ZTX304 Tr2 D8 BZY88-C5V6 47n C4 330p C7 + 47u C18 D1 BZY88-C15 BCW61 2.7k 39V 3.3k 1.5k 10k 1k68R BCW60 330k R6 10R R2 220k R1 22k R4 22k R3 C1 680n R12 3.3k 3.3k R17 22R R43 10u C17 2N4992 T1 R40 2.7k 2W R37 15R R30 560R 560R R31R33 22R Tr8 40872 40872 Tr7 100n C15 4A FS1 4A FS2 R10 560R D2 BZY88-C15 R8 3.3k 4n7 C20 0.18R R35 D6 1N4003 + C19 47u + 47u C10 1 32 4 5 Q05 NIA N2 0.18R R36 1N4003 D11 1N4003 D10 100n C12 SC1418 T2 15k R42 R5 4.7k R38 47R 1 32 4 5 Q05 NIA N1 L2 3u R44 75R 22u L4 22k R13 270R R22 Tr4 BC556B 1.2k R23 C11 1n + 100u C5 3.3k R7 R15 100R R14 470R BC214C Tr1 C8120p 1kR21 1kR20 Tr10 17556 17556 Tr9 D5 1N4003 1N4003 D13 + 3V 100u C2 6 + 3 - 2 V+ 7 V- 4 TL071 IC1 C6 1n D9BZY88-C8V2 180R R16 R39 10R BCW60 BCW61 1Revision: Page 1of 1 Page Size: Checked:Drawn: K. Snook A4 QUAD 405 - M12333 iss. 9 12 Feb 2003 -50V +50V 3 5 2 Input Limiter 41 ClassA-out Dumpers-outOutput Grounded at input DIN socket d.c. feedback Current Limit Network M12565 iss. 7 PCBs (QUAD 405-2) were used for serial numbers from 72501 to 82999 and 83000 to 84999 with voltage selector omitted keithsnook.eu Speaker + C14 10,000u + C13 10,000u redD8 C16 100n + 3V 100u C2 C6 1n ZTX304 Tr2 D9BZY88-C8V2 D8 BZY88-C5V6 47n C4 330p C7 + 47u C18 BCW61 2.7k 39V 3.3k 1.5k 10k 1k68R BCW60 330k R6 220k R1 22k R4 22k R3 C1 680n R12 3.3k 180R R16 3.3k R17 22R R43 10u C17 2N4992 T1 R40 2.7k 2W R37 15R R30 560R 560R R31R33 22R Tr8 40872 40872 Tr7 4A FS1 4A FS2 R10 560R 6 + 3 - 2 V+ 7 V- 4 TL071 IC1 R8 3.3k 0.18R R35 D6 1N4003 + C19 47u + 47u C10 1 32 4 5 Q05 NIA N2 0.18R R36 1N4003 D11 1N4003 D10 100n C12 SC1418 T2 15k R42 R5 4.7k R38 47R 1 32 4 5 Q05 NIA N1 L2 3u R44 75R 22u L4 270R R22 C11 1n + 100u C5 3.3k R7 R15 100R R14 470R BC214C Tr1 C8120p 1kR21 1kR20 Tr10 17556 17556 Tr9 D5 1N4003 1N4003 D13 D2 BZY88-C15 BC556B Tr3 R39 10R 100n C15 D1 BZY88-C15 10R R2 22k R13 4n7 C20 1.2k R23 BCW60 BCW61 Revision: Page 1of 1 Page Size: Checked:Drawn: K. Snook A4 QUAD 405 - M12333 iss. 10 12 May 2004 3 -50V +50V 3 5 2 Input Output Dumpers-out ClassA-out Limiter 41 d.c. feedback Current Limit Network Ground isolated at phono M12565 iss. 7 PCBs (QUAD 405-2) used for serial numbers from 85000 onward - Note input earth change with phono input connectors keithsnook.eu 4A F2 4A F1 Speaker + 63V 22,000u C14 + 47u C10 C16 100n 2%680n C4 + 63V 22,000u C13 680n C1 2% 630V 1% 120p C8 L2 3u - 2 + 3 V- 4 6 V+ 7 IC1 TLE2071 100n C15 D1 BZY88-C15 Tr3(Tr4) ZTX753 2SC2547E Tr2 D2 BZY88-C15 D13 1N4006 D5 1N4006 SC1418 T2 R8 2.7k 4.7k R5 1% 3.3k R4 22k 1% R6 10R R2 2SA1085E Tr1b R13 22k R38 1%47R 1k R21 2% R20 1k 2% 10RR? 560R R31 R33 22R R30 560R 100n C12 15k R42 22R R43 10u C17 2N4992 T1 R12 1%2.7k R39 10R CD1 1 CD2 1 C6 1n 22k 1% R3 220k R1 R16 180R 1% + 3V C2 47u C2b 1 D10 1N4006 D6 1N4006 2SA1085E Tr1a(R14) 2.7k R7220R-AOT R15 270R R22 R35 22u L4 D11 1N4006 R37 15R R36 Tr9 MJ15003 Tr7 MJE15033 Tr10 MJ15003 Tr8 MJE15033 Revision: 6 Page 1 of 1 Page Size: Checked:Drawn: K. Snook Sept 2011 A4 QUAD 405 - DCD Mod-3 -50V +50V Input ClassA-out Feedback? Output Dumpers-out d.c. feedback keithsnook.eu 4A F1 IS920 D4 D3 IS920 40872 Tr7 Tr9 100n C12 + L3 6.8u + 100n C15 6.8u L1 C16 100n 4A F2 220k R1 22k R3 C1 680n 4.7k R5 560R R31 R30 560R R13 22k BC214C Tr6 22R R25 75R R28 R33 22R R37 22R 12Rk1 1kR20 47R R38 L2 3u R41 22R BC214C Tr5 22R R24 75R R26 Tr10 40872 Tr8 R35 0.091R R36 0.091R R29 15k 15k R27 - 2 + 3 4 6 7 8 1 TL071 or OPA134 OPA604 1n C6 10R R2 180R R16 R39 10R Revision: Page 1 of 1 Page Size: Checked:Drawn: K. Snook M12368 PCBs to DCD Mod-3 1 Sept 2008 A43 +50V -50V Input Dumpers-out ClassA-out Output d.c. feedback + Components marked in green are changes or additions to the original n.f. = not fi tted and Link = remove and wire across. For original sensitivity 0.5V for 100W fi t R4 = 1.6k and C2 = 100uF As shown sensitivity is 1V for 100W For sensitivity of 1.5V for 100W fi t R4 = 4.7k and C2 = 33uF C19 can be removed if Tr3 is bypassed but if you cannot check for stabilty leave it in place Components marked in grey with blue reference designators should be removed to disable current limiting - This should be done in conjunction with a change of Tr9 and Tr10 to higher power devices like MJ15003 Tr3 should be bypassed base-emitter as shown and it should then be possible to safely remove C19 fi tted across Tr10 collector-base on the solder side of the PCB - If you are not sure bypass Tr3 and leave C19 Note the 2 different ground symbols either side of R2 - probably to prevent internal hum loops - The input ground connects to the chassis at the input DIN socket and originally the other side of R2 connects to chassis via the bolt in the heatsink - Even if you do not provide a formal ground wire to the 0V speaker terminal as I show you should ensure that both sides of R2 are at the same potential - If one ground is missing the voltage at the speaker terminals will be about 20mV if both grounds are in place it should be less than 1mV - Both grounds should be connected to chassis 2SA1085 Tr1 n.f.C3 n.f. C7 680n C4 100 C10 C5 n.f. Tr4 ZTX753 Tr3 D5 22k R6 R12 2.7k 2.7k R7 3.3k R4 2.7k R8 R23(R19) n.f. Link R17 Link R9 R14 R15 220R R18 n.f.220R R22 2SC2547 Tr2 C11 Link C8 120p C19 n.f BZV85-C15 D1 R10 Link BZV85-C15 D2 3V 47u C2 IC1 2SA1085 re-positioned on rear of PCB D6 1N4003 1N4003 C2b 1-3.3 fi tted on rear of PCB Wire to 0V ESL 57 limit not fi tted 10R CD1 1 CD2 1 n.f. keithsnook.eu 2%680n C4 680n C1 2% - 2 + 3 V- 4 6 V+ 7 IC1 D2 BZY88-C15 1% 3.3k R4 22k1% R6 2% C6 1n 22k 1% R3 220k R1 + 3V C2 47u C2b 3.3u Tr1a 2SA1085E D1 BZY88-C15 R7 2.7k CD2 1u 1u CD1 1%2.7k R12 2SC2547E Tr2 R16 180R 1% 270R R22 220R R15 Tr4 ZTX753 Tr1b 2SA1085E ZTX653 Q45 R101 10k R8 2.7k + 63V 22,000u C13 D13 1N4006 F2 4A D6 1N4006 MJE15032 Tr108 Tr7 MJE15033 C8 120p 1% 1k 2% R20 1k R21 2% R106 AOT 4A F1 R103 15R R39 10R + - Speaker + 63V 22,000u C14 4.7k R5 100n C12 3u L21%47R R38 R104 47R R105 47R MJ11015 Tr10 MJ11016 Tr9 R2 10R R14 22k 1 C15 C16 1 Revision: Page 1 of 1 Page Size: Checked:Drawn: K. Snook1 Apr 2005 A4 QUAD 405 - DCD Mod-4 3 -50V +50V Input Feedback? Output Note: The “Current Dumpers” Tr9 and Tr10 are complimentary Darlington transistors This layout WILL NOT work with low hfe output devices due to the base current required The “Current Dumpers” can be made complimentary MOSFETs If D13 and D6 are changed for resistors but care must be taken to ensure that the Source-gate voltage can be obtained within the limits of Tr7 and Tr108 current drive TL071 or TLE2071 OPA134 OPA604 LME49710 Note: This is only a schematic - It has been implimented as a mod to 12368 iss.10 and 12565 iss.7 PCBs but the cicuit can oscillate at VHF radio frequencies which do not appear at the output but can put the transistors in compression - increasing the distortion and dissipation lookout for updates and refer to my website for