RYO

RYO XNOR/XOR/NOT DIY Kit

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$65.00

Out of Stock

Discrete XNOR/XOR, XOR and NOT gates.

The circuitries of the RYO logic gate modules are directly modeled after the very earliest form of digital logic gate designs using resistor-transistor (RTL) pioneered in the 1950s and used in computing equipment throughout the 50s and 60s. The Apollo Guidance Computer for instance used the same type of 3-input NOR gate design now found in the RYO NOR/OR module, although in vastly greater numbers.

The RTL circuit design gives the modules some interesting quirks thanks to the transistors thresholds and tolerances when playing around with different amplitudes, waveforms and frequency rates of the incoming signals, making it fun and useful to explore beyond typical logic gating duties, for example as an audio waveshaper/distortion.

It 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
  • One NOT gate and one 3-input XNOR/XOR gate


Gate one and two has two inputs, the third has one. The XOR out from gate one is being normalled to input 1 on gate two. The XOR out from gate two is being normalled to the single input on gate three (NOT).

Current draw measured with +5V audio rate signals patched to all inputs, using the same signals gained to +10V the current draw is approximately doubled (ca 28mA).

***Assembly service includes assembly and testing of the module kit. Assembly may take 4-14 days from the date the service is ordered. Please call us at 347-699-2875 for accurate service turnaround time.



Discrete XNOR/XOR, XOR and NOT gates.The circuitries of the RYO logic gate modules are directly modeled after the very earliest form of digital logic gate designs using resistor-transistor (RTL) pioneered...

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Width: 4HP
Max Depth: 50mm
Power: 14mA@ +12V , 0mA@ -12V , 0mA@ +5V