Wave Sound Generator
Restful electronics
It doesn’t take a lot of electronics to produce simulated wave sounds. A variety of circuits for this have been published in past issues of Elektor magazine. In light of recent growing interest in a design for a wave sound generator, we took a close look at the previous version (published in February 1996) and transformed it into an updated and very compact design.
Materials
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Component list
R1,R3,R4–R7,R9,R11,R13,R14,R18,R24 = 100kOhm (0805)
R2 = 33kOhm (0805)
R8 = 220kOhm (0805)
R10 = 470kOhm (0805)
R12 = 150kOhm (0805)
R15,R17 = 1MOhm (0805)
R16,R19,R21 = 1kOhm (0805)
R22,R23 = 47kOhm (0805)
P1 = 100kOhm trimpot (3306W)
P2 = 50kOhm trimpot (3306W)
Capacitors (SMD)
C1 = 100nF (0805)
C2,C3 = 100µF 16V (case-d)
C4 = 47µF 16V (case-d)
C5,C9 = 10µF 16V (case-b)
C6,C11 = 220µF 16V (case-e)
C7,C10 = 47nF (0805)
C8 = 220pF
Semiconductors (SMD)
D1 = BAT42W
T1,T2 = BC847
T4 = BCP53
T3 = BCP56
IC3 = LM2937IMP-12/NOPB
IC2 = TL084ACD
Miscellaneous
K1 = power adaptor socket (CUI PJ-007)
LS1 = miniature loudspeaker, e.g. Kingstate KDMG20008, Farnell # 1502730)
PCB # 100922-1
Assembled board # 100922-91
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