Discrete resistor-transistor XNOR/XOR/NOT logic gate

• directly modelled on RTL digital logic gate designs pioneered in the 1950s used in computing equipment throughout the 50s and 60s.
• can be used as audio waveshaper/distortion.
• The XNOR/XOR/NOT module can be patched as:
  two NOT gates and one 2-input XOR gate,
  one NOT gate, one 2-input XOR gate and one 2-input XNOR/XOR gate,
  two 2-input XNOR/XOR gates, or,
  one NOT gate and one 3-input XNOR/XOR gate.
• All analogue circuitry.
• slim 4HP footprint.
• compact 50mm Depth (with power cable attached).
• low power draw: 28mA +12V / 0mA -12V / 0mA +5V.
• Works for audio as well as CV.
• Fast responding CV inputs allow up to audio rate operation.
• The XOR out from gate one is normalized to input 1 on gate two.
• The XOR out from gate two is normalized to the single input on gate three (NOT).
• signal indicator LEDs on every input and output.
• can accept input signal to +10V peak.

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