Slew Rate Controller on ER-PROTO-01

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Features[edit]

  • Simple dual slew rate limiter
  • Used for portamento effects or to smooth out a stepped voltage from a sequencer, or for general audio or CV smoothing
  • Each channel contains a buffer with 100K input impedance suitable for pitch CVs
  • The slew pot affects the charging of a large capacitor connected to a second amplifier
  • The second amp provides buffering for output to isolate the output jack from the actual slewing function
  • Control range of 0-10s (approx.)
  • Power: +12V @ 5mA, -12V @ 5mA

Credits[edit]

Jacks/Controls[edit]

  • 2 Slew Rate adjustment Pots
  • 4 Jacks
    • 2 Input jacks
    • 2 Output jacks

Wiring[edit]

Pots on Controls Card[edit]

  • Install 100 Ohms resistor at R1, R2
  • Install B100K at RV1, RV2
  • Add wire RV1-1 to RV1-2
  • Add wire RV2-1 to RV2-2

ER-PROTO-01 SLEW POTS.PNG

RV Conns.PNG

Jacks on Controls Card[edit]

  • Install J1-J4
  • Add wire J1-S to J3-S
  • Add wire J3-S to J4-S
  • Add wire J2-S to J4-S

ER-PROTO-01 SLEW JACKS.PNG

J6 - Eurorack Power Jack[edit]

  • Install 14 pin socket for U1
    • Orient socket so Pins 1-7 face +12V bus (right side)
  • Add wire U1-4 to +12V
  • Add wire U1-11 to -12V
  • Install 10 pin IDC connector at J6
    • Pin 1 to "STRIPE"

ER-PROTO-01 SLEW EURORACK PWR J6 .PNG

Input Buffers[edit]

  • Node: J1-T, J38-8 to first open row left side center of 3 pins
  • R3: 100K ohm from first open row left side right of 3 pins to GND (don't solder yet)
  • R6: 1K ohm from first open row left side left pin to next open row
  • Wire R6 new side to U1-
  • Node: J2-T, J38-4 to first open row right side center of 3 pins
  • 100K ohm from first open row right side left of 3 pins to GND

ER-PROTO-01 SLEW BUFF AMPS.PNG

Output Buffers[edit]

ER-PROTO-01 SLEW OUT BUFFER.PNG

Video[edit]