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19 Apr 2021 10:22:18 AM EDT R14, R15 values changed\ndue to availability Kassu used 1 µF tantalum.\nYuSynth 1, 10 µF tantalum.\nMFOS 1, 1+15 µF electrolytic.\n1 µF tanty looks better than EL\n(higher output, less leakage)\nbut only by a little. 1 uf \npolyester film looks much \nbetter. Low-Power, Quad-Operational Amplifiers, DIP-14/SOIC-14/SSOP-14 Quad operational amplifier, DIP-14 | | | | R3, R21, R27, R28 R4, R6, R7, R30, R31 Switch, dual pole double throw | | S2 | 1 | 10nF | Ceramic capacitor | | C2, C5, C6, C8, C9 D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 Standard switching diode, DO-35 Push button switch, generic, two pins D Push button switch, generic, separate symbols, four pins D Momentary Switch, dual pole double throw, separate symbols | | | | | | | | | | | | | | | C2, C5, C6, C8, C9 Schottky Barrier Rectifier Diode, DO-41 D3, D4, D5, D6, D7, D8, D9, D10 100V 0.15A standard switching diode, DO-35 | | | U3 | 1 | 10R | Resistor | | | | | | | | | R4, R12.

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