Motivation
This logic module generates all possible logical combinations from two inputs besides the trivial EVER and NEVER. So you get fourteen different logic outputs from two inputs.
Every input signal above +2.5V is logic high, below +2.5V logic low. The output is 5V logic high, 0V logic low. This module is mainly thought for processing gate and trigger signals but can be used with audio signals as well. If used in the audio range the output is a pulse train between 0V and 5V with variable duty cycle dependent on the input signals and the outputs used.
Specs and features
- Two inputs. A and B.
- Logic input level above +2.5V is high, below is logic low
- All 14 not trivial combinations parallel out
- LED signaled
- Logic output level +5V high, 0V logic low
- Runs on +/-12V and +/-15V
- Power consumption below 30mA positive rail. 5mA negative rail.
Implementation
Schematic
Logic III: Schematic control board
Logic III: Schematic main board
Description:
Nothing special to mention. On page one you see the input, outputs, input protection and output buffers. On page two is only the microprocessor. The logic is done in software.
Calibration
- None
Building hints
- None
Special parts
- None
Download
Not available
Logic III control board documentation downloadLogic III control board Gerber files download
Logic III main board documentation download
Logic III main board Gerber files download
Logic III software files download
Logic III *.fpd file
Logic III: Front view
Logic III: Populated control PCB top
Logic III: Populated control PCB back
Logic III: Populated main PCB top
Logic III: Populated main PCB back
Logic III: Half front view
Logic III: Half back view
