Difference between revisions of "SCF-2"

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* DNP R3, C1
 
* DNP R3, C1
 +
* Use lower value for R1 (typically 200 Ohms, etc)
  
 
== Connectors ==
 
== Connectors ==

Revision as of 07:58, 25 September 2022

SCF-2 REV 1 FRONT 3D.png

Features

  • Digital Inputs or Outputs
  • (2) 3.5mm Jacks
  • Scaling resistors
  • Schottky Clamping Diodes
  • Filter cap
  • (2) 4-40 mounting holes

Schematic

SCF-2 Channel Schematic.PNG

Used as Digital Input

  • 550K input impedance presents light load
  • R1/R3 - Input scale resistors
    • Ex: 5.0V control voltage to 3.0 V
  • Clipping diodes protect inputs
  • R1/C1 create input filter = 2.2mS = 454 Hz

Used as Digital Output

  • DNP R3, C1
  • Use lower value for R1 (typically 200 Ohms, etc)

Connectors

J2, J2 - 3.5mm Jacks

  • Tip
  • Sleeve

J3 - I/O Connector

  • 1x8 Header, 0.1"
  • Pinout
  1. VCC
  2. VCC
  3. VP1 - Tip J1
  4. Switch J1
  5. VP2 - Tip J2
  6. Switch J2
  7. GND
  8. GND
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