INTERVAL SWITCH # 831 - Parts list - Revised 2/09/02
							Mouser unless noted
VR1 to VR10 -	100 ohm 20 turn trim pot		72-T93YA-100
VR11 & VR12 - 	20K ohm 20 turn trim pot			72-T93YA-20K
R1		2.1 K  1%
R2		150 ohm  1% (+5 position = +10 semitones)	1% metal are
R3		51 ohm  1% (+4 position = +7 semitones)		#  271-value
R4		0 ohm (+ 3 pos = +5 semitones)(position for resistor shorted)
R5		0 ohm (+2 pos = +4 semitones)(position for resistor shorted)
R6		200 ohm  1% (+1 position = +3 semitones)
R7		365 ohm  1% (-1 position = -5 semitones)
R8		68 ohm  1% (-2 position = -7 semitones)
R9		0 ohm (-3 pos = -8 semitones)(position for resistor shorted)
R10		232 ohm  1% (-4 position = -12 semitones)
R11		909 ohm  1% (-5 position = -24 semitones)
R12		953  1%
R13		180 K  5% 
R14		100 K  1% (hand match to same as R15)
R15		100 K  1% (hand match to same as R14)
R16		499K  1% - no matching required
R17		33 K  1%
R18		10 K  1% (hand match to same as R19)
R19		10 K  1% (hand match to same as R18)
R20		5.1 K  1%
R21		100 K  5%
R22		51 K  1%
R23		470 ohm  5%
R24		180 K  5%
R25		100 K  1% (hand match to same as R26)
R26		100 K  1% (hand match to same as R25)
R27		487 K  1% - no matching required
R28		33 K  1%
R29		10 K  1% (hand match to same as R30)
R30		10 K  1% (hand match to same as R29)
R31		5.1 K  1%
R32		100 K  5%
R33		51K  1%
R34		470 ohm  5%
R35		180 K  5%
R36		100 K  1% (hand match to same as R37)
R37		100 K  1% (hand match to same as R36)
R38		487 K  1% - no matching required
R39		33 K  1%
R40		10 K  1% (hand match to same as R41)
R41		10 K  1% (hand match to same as R40)
R42		5.1 K  1%
R43		100 K  5%
R44		51 K  1%
R45		470 ohm  5%

Resistors R14, R15, R18, R19, R25, R26, R29, R30, R36, R37, R40 and R41
requiring hand matching were supplied with PCBs. 


C1 to C6		1n0  yellow box film		581-1N0J63
C7 & C8		10 uF electrolytic		140-LLRL-35V10
C9 to C18		0.1 uF ceramic			581-SA-105E-104M

SW 1 to SW 3	12 pos 1 pole rotary switch		105-13571
				(adjustage stop)	

Alternate switch (higher price) but	  Electro-switch		Allied #s
Provides the additional clearance	  C6P0112N-A		747-6760
for the top switch that some made	  or C5P0112N-A		747-6747
need for wood cabinet type
construction

U1 to U5		LT1013CP op amp			Newark  06F 9484

J1 to J6		Switchcraft 112A		widely available

Misc:

Knobs		Alco # PKES-90B-1/4			Newark 57F2348

Power connectors:		circuit board header: 	571-6404454
				connector for wire: 	571-6404264
				white cap cover:	571-6405514


custom PCB from me - $15.00