Enclosure not stated · 1 knob

Paia 2720-14 Sine Converter and PWM

Category: Ring Mod / Synth· Guitar Synth and Misc Signal Shapers
Controls: Pulse
Price: see vendor
Tags: Guitar Synth and Misc Signal Shapers

Open the schematic at Experimentalists Anonymous

Schematic

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Parts list 48 rows

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Check before you build · 2 values the reader of this schematic was not sure of

R5: 50K or 150K, leading digit unclear
R33: trimmer or panel pot not shown

Ref	Value	Normalized	Type	Notes
Resistors 31
R1	6.8K	6.8k		read from the schematic by eye
R2	10K	10k		read from the schematic by eye
R3	47K	47k		read from the schematic by eye
R4	39K	39k		read from the schematic by eye
R5	150K	150k		could be 50K or 150K: the leading digit is unclear on the scan; read from the schematic by eye
R6	330K	330k		read from the schematic by eye
R7	680K	680k		read from the schematic by eye
R8	680K	680k		read from the schematic by eye
R9	150K	150k		read from the schematic by eye
R10	1.8MEG	1.8M		read from the schematic by eye
R11	680K	680k		read from the schematic by eye
R12	39K	39k		read from the schematic by eye
R13	680K	680k		read from the schematic by eye
R14	680K	680k		read from the schematic by eye
R15	150K	150k		read from the schematic by eye
R16	10K	10k		read from the schematic by eye
R17	220K	220k		read from the schematic by eye
R18	10K	10k		read from the schematic by eye
R19	680	680		read from the schematic by eye
R20	27K	27k		read from the schematic by eye
R21	33K	33k		read from the schematic by eye
R22	33K	33k		read from the schematic by eye
R23	33K	33k		read from the schematic by eye
R24	56K	56k		read from the schematic by eye
R25	10K	10k		read from the schematic by eye
R26	330	330		read from the schematic by eye
R27	1K	1k		read from the schematic by eye
R28	1K	1k		read from the schematic by eye
R29	270	270		read from the schematic by eye
R30	2.2K	2.2k		read from the schematic by eye
R31	2.2K	2.2k		read from the schematic by eye
Capacitors 7
C1	10uF	10u		drawn 10/15, 15V electrolytic; read from the schematic by eye
C2	2.2uF	2.2u		drawn 2.2/6, 6V electrolytic; read from the schematic by eye
C3	2.2uF	2.2u		drawn 2.2/6, 6V electrolytic; read from the schematic by eye
C4	2.2uF	2.2u		drawn 2.2/6, 6V electrolytic; read from the schematic by eye
C5	100uF	100u		drawn 100/15, 15V electrolytic; read from the schematic by eye
C6	2.2uF	2.2u		drawn 2.2/6, 6V electrolytic; read from the schematic by eye
C7	2.2uF	2.2u		drawn 2.2/6, 6V electrolytic; read from the schematic by eye
Diodes 7
D1	Diode	DIODE		no part number given; read from the schematic by eye
D2	Diode	DIODE		no part number given; read from the schematic by eye
D3	Diode	DIODE		no part number given; read from the schematic by eye
D4	Diode	DIODE		no part number given; read from the schematic by eye
D5	Diode	DIODE		no part number given; read from the schematic by eye
D6	Diode	DIODE		no part number given; read from the schematic by eye
D7	Diode	DIODE		no part number given; read from the schematic by eye
ICs 1
IC1	?	?		quad amplifier, no part number given; pinout (supply pin 14, ground pin 7, sections 1/6-5, 2/3-4, 8/13-9, 11/12-10) matches an LM3900 Norton quad; read from the schematic by eye
Potentiometers 1
Pulse	50K	50k	Potentiometer	R32, pulse width; read from the schematic by eye
Trimmers 1
R33	10K	10k		labeled SINE, sine shape adjust; could be a panel pot; read from the schematic by eye