Now downloading free:Mastech 3003, 3020

Mastech 3003, 3020 free download

Computer power supply, dc power supply, atx , switching, high voltage, uninterruptible power supply, laptop and other service manual and repair information.

File information:
File name:	Mastech power Supply 3020.rar [preview 3003, 3020]
Size:	90 kB
Extension:
Mfg:	Mastech
Model:	3003, 3020 🔎
Original:
Descr:	Laboratory power supply, various chinese manufacturers, like Mastech. These schematic apply for various models too, with different output currents, and digital or analog instruments. Specially useful for model 3020 and 3003.
Group:	Electronics > Consumer electronics > Power supply
Uploaded:	22-03-2008
User:	Flatline
Multipart:	No multipart

Information about the files in archive:
Decompress result:		OK
Extracted files:		2
File name HY3020 sch.pdf +12V 1 3 R1 430F/0.5W DW6 D1 1N4002 D2 1N4002 2 C1 220uF/25V C3 220uF/25V D5 1N4002 U1 Vin L7812CV GND Vout K2 K1 D6 1N4002 K3 D13 1N4002 J2 2 1 J4 8 7 6 5 4 3 2 1 7 14 15 11 6 12 9 8 10 C4 47uF/25V R2 10KF/0.5W R3 470F/0.5W 11 WL431 R4 10KF Q6 A708 R5 33KF R6 24KF 12 D3 1N4002 D4 1N4002 FAN+ C2 R?39J/5W FAN220uF/25V R7 560J/2W R8 1KF/0.5W -6V -15V D9 1N5408 D10 1N5408 DW1 6.2V Q3 2N3055 Q7 2N3055 Q8 C? 2200uF/16V 100F R98 R100 R102 2N3055 R10 10KF R11 100J/5W Q? 2N3055 Q1 C1008 F E D7A~G 1N5408 4 K3-2 K3-3 D8A~G 1N5408 Q2 D313 C6A~D 4700uF/63V DW2 D11 2.4V 1N4002 R12 1KF R13 10F/0.5W C8 100pF 6 LED1 5/RED 10 -6V C9 7 100pF 6 +12V U3 LED2 5/RED 2 3 PCB-HY3002D(1) C10 100pF -6V T-HY3020 11 C1* 104J/63V VR6 6.8K R23 HA17741 7.5KF 5 1 4 R? 560F B C7 7 U2 100pF 6 2 VR3 6.8K 3 8 PCB-HY3002D(1) HA17741 5 1 4 VR2 5K 9 VR5 200 R103 0.36J/5W R101 0.36J/5W R99 0.36J/5W Q8B R98B R100B R102B 100F 2N3055 (CUR+) Q7B 2N3055 Q3B 2N3055 R101B 0.36J/5W R99B 0.36J/5W PCB-HY3003(1) Q5 C1008 +12V R19 R18 680KF 10KF 4 7 Q9 C1008 R103B 0.36J/5W 13 PCB-HY3002D(1) (CUR-) VOT+ 15 PCB-HY3003(1) 18 1 C R20 3.9KF N1 19 D7 1N5408 2 3 C5 563J D8 1N5408 R22 3.9KF R21 15KF +12V U4A 3 Q4 C1008 1 2 C12 LM324N 123J R24 10KF R25 11 C13 2.2uF/25V R30 10KF R31 R32 3.9KF 680KF U4B 5 6 C2* LM324N 123J R33 24KF N1 5 7 2.2uF/25V R9A~B 1KJ/5W K2-3 C5A 563J D10A~G 1N5408 D9A~G 1N5408 A 8 K2-1 +12V LM324N R34 2.4KF C14 123J C15 12 PCB-HY3002D(1) 2.2uF/25V R26 15KF R35 15KF 9 C D K1-1 K1-2 K1-3 R36 10KF R37 30KF DW4 2.4V C11 1uF/50V PCB-HY3002D-3(6) Q10 A708 10 VR7 1K DW5 15V 14 PCB-HY3003(1) VOT- PCB-HY3002D-3 7 PCB-HY3002D2 FUSE1 T1A250V SW1 CS 6 1 2 3 1 N1 2 3 N1 4 MASTECH AC IN 5 4 (1) HMJ20001B32 A0 HY3020 2 R27 2.2KJ/2W VR4 1K 8 9 D80 1N5402 B K2-2 C81 104J/63V VR1 10K C80 470uF/63V 7 680KF U4C 10 C16 6 K3-1 -15V 1 PDF created with FinePrint pdfFactory Pro trial version http://www.fineprint.com
File name HY3020.pdf +12V 1 3 R1 430F/0.5W DW6 D1 1N4002 D2 1N4002 2 C1 220uF/25V C3 220uF/25V D5 1N4002 U1 Vin L7812CV GND Vout K2 K1 D6 1N4002 K3 D13 1N4002 J2 2 1 J4 8 7 6 5 4 3 2 1 7 14 15 11 6 12 9 8 10 C4 47uF/25V R2 10KF/0.5W R3 470F/0.5W 11 WL431 R4 10KF Q6 A708 R5 33KF R6 24KF 12 D3 1N4002 D4 1N4002 FAN+ C2 R?39J/5W FAN220uF/25V R7 560J/2W R8 1KF/0.5W -6V -15V D9 1N5408 D10 1N5408 DW1 6.2V Q3 2N3055 Q7 2N3055 Q8 C? 2200uF/16V 100F R98 R100 R102 2N3055 R10 10KF R11 100J/5W Q? 2N3055 Q1 C1008 F E D7A~G 1N5408 4 K3-2 K3-3 D8A~G 1N5408 Q2 D313 C6A~D 4700uF/63V DW2 D11 2.4V 1N4002 R12 1KF R13 10F/0.5W C8 100pF 6 LED1 5/RED 10 -6V C9 7 100pF 6 +12V U3 LED2 5/RED 2 3 PCB-HY3002D(1) C10 100pF -6V T-HY3020 11 C1* 104J/63V VR6 6.8K R23 HA17741 7.5KF 5 1 4 R? 560F B C7 7 U2 100pF 6 2 VR3 6.8K 3 8 PCB-HY3002D(1) HA17741 5 1 4 VR2 5K 9 VR5 200 R103 0.36J/5W R101 0.36J/5W R99 0.36J/5W Q8B R98B R100B R102B 100F 2N3055 (CUR+) Q7B 2N3055 Q3B 2N3055 R101B 0.36J/5W R99B 0.36J/5W PCB-HY3003(1) Q5 C1008 +12V R19 R18 680KF 10KF 4 7 Q9 C1008 R103B 0.36J/5W 13 PCB-HY3002D(1) (CUR-) VOT+ 15 PCB-HY3003(1) 18 1 C R20 3.9KF N1 19 D7 1N5408 2 3 C5 563J D8 1N5408 R22 3.9KF R21 15KF +12V U4A 3 Q4 C1008 1 2 C12 LM324N 123J R24 10KF R25 11 C13 2.2uF/25V R30 10KF R31 R32 3.9KF 680KF U4B 5 6 C2* LM324N 123J R33 24KF N1 5 7 2.2uF/25V R9A~B 1KJ/5W K2-3 C5A 563J D10A~G 1N5408 D9A~G 1N5408 A 8 K2-1 +12V LM324N R34 2.4KF C14 123J C15 12 PCB-HY3002D(1) 2.2uF/25V R26 15KF R35 15KF 9 C D K1-1 K1-2 K1-3 R36 10KF R37 30KF DW4 2.4V C11 1uF/50V PCB-HY3002D-3(6) Q10 A708 10 VR7 1K DW5 15V 14 PCB-HY3003(1) VOT- PCB-HY3002D-3 7 PCB-HY3002D2 FUSE1 T1A250V SW1 CS 6 1 2 3 1 N1 2 3 N1 4 MASTECH AC IN 5 4 (1) HMJ20001B32 A0 HY3020 2 R27 2.2KJ/2W VR4 1K 8 9 D80 1N5402 B K2-2 C81 104J/63V VR1 10K C80 470uF/63V 7 680KF U4C 10 C16 6 K3-1 -15V 1 PDF created with FinePrint pdfFactory Pro trial version http://www.fineprint.com

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