Difference between revisions of "SCF-2"
Jump to navigation
Jump to search
Blwikiadmin (talk | contribs) |
Blwikiadmin (talk | contribs) |
||
| Line 46: | Line 46: | ||
# VCC | # VCC | ||
# VP1 - Tip J1 | # VP1 - Tip J1 | ||
| − | # Ring J1 | + | # Ring J1 (not used in Synth applications) |
# VP2 - Tip J2 | # VP2 - Tip J2 | ||
| − | # Ring J2 | + | # Ring J2 (not used in Synth applications) |
# GND | # GND | ||
# GND | # GND | ||
Revision as of 08:04, 25 September 2022
Contents
Features
- Digital Inputs or Outputs
- (2) 3.5mm Jacks
- Scaling resistors
- Schottky Clamping Diodes
- Filter cap
- Ring pin brought to connector
- Not used in Synth applications
- (2) 4-40 mounting holes
Schematic
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
- Drive with 5V low output impedance source
- DNP R3, C1
- Use lower value for R1 (typically 200 Ohms, etc)
- Can leave Clipping Diodes to protect driver
Connectors
J1, J2 - 3.5mm Jacks
- Tip
- Sleeve
J3 - I/O Connector
- 1x8 Header, 0.1"
- Pinout
- VCC
- VCC
- VP1 - Tip J1
- Ring J1 (not used in Synth applications)
- VP2 - Tip J2
- Ring J2 (not used in Synth applications)
- GND
- GND
