Ibanez_PQL_Parametric_EQ_Schematic电路图.pdf

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1、Page 1 of 1 (07-Mar-2008) ibanez_pql.UTSCH - SHEET AA BB CC DD 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 INITIALPAGE:OF: COMPANY: COUNTRY: CITY PROJECT: REV:DATE:DRAWN: ADDRESS: DIRK_HENDRIK HOLLAND AMSTERDAM P 11 IBANEZ PQL PARAMETRIC EQ 7 MARCH 2008 5 MARCH 2008 C24 100/16 D4 1N4001 1 2 3 JK3 JK1 C1 100n R1

2、 1k 5 6 7 8 4 U1.B JRC4558D R4 510k VBIAS VCC R3 4k7 C3 30p C2 10n R2 470 C4 2.2/50 C19 100n R46 20k R7 100k C8 2.2/50 R15 510k VBIAS Q2 2SK118-O D2 VBIAS R16 510k C9 2.2/50 R18 4k7 3 2 1 8 4 U1.A JRC4558D C10 10n R19 470 VCC C11 10/16 R20 470 JK2R21 100k VBIAS Q1 2SK118-O VBIAS R17 510k VR1 50KB C2

3、1 2.2/50 R48 20k R49 3k C20 10n R50 3k VR3 50KB 5 6 7 8 4 U2.B JRC4558D 3 2 1 8 4 U2.A JRC4558D 5 6 7 8 4 U3.B JRC4558D R8 20k C5 100n C6 2.2/50 VR2 50Kb C22 10/16 C23 10/16 R51 15k R6 3k3 R11 3k3 R52 27k R5 27k C26 30p R10 27k C7 30p R13 27k R12 9k1 VBIAS VBIAS R9 9k1 C27 2.2/50 VBIAS R14 510k 3 2

4、1 8 4 U3.A JRC4558D C17 39n R43 680 1 2 4 VR4.A 50KC 6 3 5 VR4.B 50KC 3 2 1 8 4 U4.A JRC4558D VBIAS R42 10k C18 39n R35 10k R37 820 5 6 7 8 4 U4.B JRC4558D R36 10k R40 680 VBIAS R41 10k VBIAS R39 10k R38 820 6 3 5 VR5.B 50KA 1 2 4 VR5.A 50KA B19v + R45 10k R44 10k VCC C25 47/6.3 VBIAS C16 1n C15 1n

5、R25 10k R26 56k R24 22k R27 56k R28 22 VCC R29 1M VCC VCC R33 1M EFF_ON BYPASS CX1 1n E B C Q3 2SC2458GR CX2 1n RX1 100k RX2 100k D1 C13 47n C12 47n R22 1M R23 1M BYPASS EFF_ON E B C Q4 2SC2458GR D3R32 100 C14 1n OR GY R30 62k R31 22k E B C Q5 2SC2458GR D5 4.7V R34 2k7 VCC VCC VCC VCC VCC VCC VCC VCC INPUT EXT DC IN MAIN OUT LOWHI MID FOOTSWITCH D6 red VR4: FREQ VR5: Q RD BK R47 20k RadioFans.CN 收音机爱 好者资料库