Crate_BT-220H_Power_Amp_(07S689)_Schematic电路图.pdf

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1、DCBA 4 3 2 NOTES: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 1) CAUTION: SHOCK HAZARD!

2、2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AND 10 MEGOHM DIGITAL VOLTMETER. SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. DCBA 1 FE 1 S

3、ignatures: Checked: Drawn: Sheet Class Code: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO Drawing Size: Drawing Type: Schematic Released: REVDateDESCRIPTION E Tolerance: Plot Date: Plot Time: Wed Aug 13, 2003 A 8/05/03 1 - REM - - INITIAL ISSUE C of Drawing Title: Drawing Number: NONE

4、 1 Ecr(s)/Ecn(s) First Used On: ST. LOUIS MUSIC, INC Date: 6/17/02 11880 Borman Drive, St. Louis, MO 63146 Chgd By Appvd by - F - 07S689 2 SCHEM-220 WATT PWR AMP Date 4 3 A 13 7 6 2 1 _ _ _ -4V B 10 12 11 9 8 3 4 _ _ _ _ AC _ _ _ _ DC 5 L +16V B A 65V p-p 65V p-p 1V p-p 1V p-p VOLTAGE -55V +55V +4V

5、FLAMEPROOF +55V TP11 C18 .1 100V C19 2.2 50V R48 82K C16 10 35V C17 .1 50V +16V C14 220 pF 100V R17 68K L R35 47K C8 10 35V R39 220 R23 680 R27 2.7K R28 33K 65V p-p 2.3V p-p FLAMEPROOF D16 1N3070TR 200V PIV TP5 R41 4.7K R13 4.7K TP4 FLAME PROOF +16V -16V -15V +5.8V C2 100V 330 R8 100 100 R2 TP6 R4 4

6、7K D1 1N4002TR 100V PIV R14 82K C9 2.2 50V C12 2.2 50V R16 330 R25 4.7K R18 4.7K FLAMEPROOF R29 330 TP12 C4 .22 100V R45 .33 5W 5per R31 330 R6 471/2W5per R34 1W 3.3 5per -55V TP8 +16V TP10 C15 .1 50V 1N914 D20 75V PIV R52 39K R47 33K R46 47K TP9 D11 1N914 75V PIV Q11 MPS-A13 Q9 MPS-A56 R19 2.7K R43

7、 4.7K R22 47 1/2W 5per -5.8V R9 470 TP7 C1 330 100V 680 R1 R20 82K FLAME PROOF R10 47 1/2W 5per R7 47 1/2W 5per FLAME PROOF R5 47 1/2W 5per R12 330 C3 .22 100V .1 C13 100V 1 2 3 J1 2 1 J3 VOLTAGE +16V +55V R51 10K R50 68K +16V R49 10K 13 12 14 IC2:D TLO-74 -16V C11 56 pF 200V 2 3 1 IC2:A TLO-74 R36

8、82K -16V T.P. R15 1K D7 1N914 75V PIV D8 1N914 75V PIV R11 47K D19 1N914 75V PIV +16V D15 1N914 75V PIV R42 1K 6 5 7 IC2:B TLO-74 R44 1K R26 1K MPS-A06 Q10 D17 1N3070TR 200V PIV 3.3K R30 C6 680 pF 200V R24 47 1/2W -16V D10 1N914 75V PIV 1N4743ARL 13V D4 D9 1N3070TR 200V PIV CW AP1 500 BIAS ADJUST 1N

9、4743ARL 13V D6 MPS-A06 Q1 Q8 MPS-A06 -55V IRFP-9240R Q3 R38 .33 5W 5per .33 R32 5W 5per R33 .33 5W 5per R40 10 2W 5per G D S IRFP-240R Q2 L1 .5 uH 9 10 8 IC2:C TLO-74 1 V+ 2 OUT 3 GND LM35DZ OC1 VTL-5C7 G S D Q13 J112 D21 1N914 75V PIV TP1 D14 1N3070TR 200V PIV R37 220K D18 200V PIV 1N3070TR 680 R21

10、 56 pF 200V C7 TP3 TP2 D2 1N4002TR 100V PIV MPS-A06 Q4 Q14 MJE-340 Q7 MPS-A56 D3 1N4743ARL 13V BIAS ADJUSTMENT: WITH NO SIGNAL AND NO LOAD ADJUST AP1 TO PRODUCE 2.0 + 1.0mV AVERAGE ACROSS R32, R33, R38 AND R45. TP13 D13 1N3070TR 200V PIV D5 1N4743ARL 13V D12 1N914 75V PIV C5 680 pF 200V R3 47K 1 2 3 4 5 6 J2 * DC LEVEL IS APPROXIMATE DEPENDING ON BIAS. TEST POINTS INPUT SIGNAL AT J2 , PIN 1 IS 1.0 V p-p 1KHz SINEWAVE. 120VAC LINE VOLTAGE, NO LOAD. MJE-350 Q12 ASSY P/N 07-689-01 G D S IRFP-240R Q5 Q6 IRFP-9240R RadioFans.CN 收音机爱 好者资料库