EFM DEG 2a User manual

DEG 2a - Dual ADSR
Dual ADSR Envelope generator.
Features...
●Common Gate
●+/-12 or +/- 15V
Assembly
●Press the overlay on the panel blank
●Drill and clean the holes
●Remove the application tape and cutouts
●Mount the jacks, switches, pots ect... to the panel.
●Install the resistors
●Install the IC sockets
●Install the capacitors
●Cut and solder header strip pins in pads used to connect wire to the board
●Plug the ICs into their sockets
●Mount the L-Brackets to the board with 440 screws and nuts, using the non threaded end of the bracket
●Mount the board to the panel with 440 screws using the threaded end of the bracket
●Wire the panel mounted parts to the header pins.
Notes
●D3 and D6 are mounted to the control pots. Do not install them on the pc-board.
●The LEDS are no longer used you can also omit R12 and R17.
●For faster envelopes change R9,10,11,14,15 and 16 from 1K to 100ohms. Change C6 and 8 from 10uF to 4.7uF
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Schematic

PC Board
PC Board Wiring

Small Parts Kit
C1,C2 0.1uF 2
C3,C5,C7 0.01uF 3
C4 100uF 25V 1
C6,C8 10uF 16V 2
R1,R2,R5 10K 3
R3,R8,R13 4.7K 3
R4,R6 2.2K 2
R7 100 1
R9-R12,R14-R17 1K 7
D1-D8 1N4148 8
Q1-Q3 2N3904 3
U1 LM556 1
U2 TLO72 1
PC-Board 1
Full Parts Kit
P2, 3, 4, 6, 7, 8 1M 6
P1,5 10K 2
Knobs 8
Panel 1
8 pin 1
14 pin 1
J1 Power Connector 1
L-Bracket 2
J2, J3 1/8th 3