INTERVAL SWITCH # 822 - Parts list - Revised 02-05-2002 Mouser unless noted VR1 to VR11 - 50 ohm 20 turn trim pot 72-T93YA-50 VR12 to VR17 - 100 ohm 20 turn trim pot 72-T93YA-100 VR18 & VR19 - 20K ohm 20 turn trim pot 72-T93YA-20K R1 59 ohm 1% R2 to R11 33 ohm 1% 1% metal are R12 2.8K ohm 1% (see note below) # 271-value R13 698 ohm 1% R14 887 ohm 1% R15 909 ohm 1% R16 & 17 953 ohm 1% R18 909 ohm 1% R19 887 ohm 1% R20 698 ohm 1% R21 100 K 1% (hand match to same as R22) R22 100 K 1% (hand match to same as R21) R23 180 K 5% R24 402 K 1% - no matching required R25 402 K 1% - no matching required R26 24 K 1% R27 100 K 1% (hand match to same as R28) R28 100 K 1% (hand match to same as R27) R29 180 K 5% R30 392 K 1% - no matching required R31 392 K 1% - no matching required R32 24 K 1% R33 10 K 1% (hand match to same as R34) R34 10 K 1% (hand match to same as R33) R35 5.1 K 1% R36 10 K 1% (hand match to same as R37) R37 10 K 1% (hand match to same as R36) R38 5.1 K 1% R39 & R40 100 K 5% R41 470 ohm 5% R42 51 K 1% R43 470 ohm 5% R44 51 K 1% Resistors R21, R22, R27, R28, R33, R34, R36 and R37 requiring hand matching are supplied with PCBs. Note: Due to part tolerances, R12 may need to be adjusted to the next sixe resistor down which is 2.74K. If I were ordering parts for an 822, I would get both the 2.8 K and 2.74 K resistors C1 & C2 10 uF electrolytic 140-LLRL-35V10 C3 to C8 0.1 uF ceramic 581-SA-105E-104M C9 to C12 1n0 yellow box film 581-1N0J63 SW 1 & SW 2 12 position 1 pole rotary sw 10WC204 * (step switches) (continuous rotation - no stop) SW 3 & SW 4 12 position 1 pole rotary sw 105-13571 * * (octave switches) (adjustable stop) * Alternate smaller diameter switch for SW3 and SW4 is: Electroswitch C6P0112N-A Allied # 747-6760 * * Alternate switch for SW1 and SW2 that provides a full 1/2 inch top clearance and has no fixed stop so it rotates continuously is: Electroswitch C6P0112N-C only from Electroswitch Contact me if you are looking for the - C version. I stock them. U1 to U3 LT1013CP op amp Newark 06F 9484 or Allied 735-3671 J1 to J4 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 PCB from me - $15.00