muSonics has introduced Transistor Logic, a new module for MU format modular systems.
Transistor Logic has three sections:
- “Soft” pure transistor logic – The soft logic section offers three functions. The output voltages depend on the input voltages, so they can be used to process control voltages and even audio-rate waveforms. The OR and AND outputs operate roughly the way you would expect them to, but the XNOR output provides predictable XNOR functions with hard-edged 0-5V input. When given signals other than that, though, it outputs unpredictable and bipolar results, despite the module only being powered by the 5V rail.
- “Hard” OR/NOR functions – The hard OR section acts as a comparator and produces predictable OR and NOR functions. Like the soft logic section, this is done only with NPN transistors and resistors on the 5V rail.
- A CMOS flip-flop, with full input-output transistor conditioning.
When coupled with the normaling of the Q-Bar output (aka negative output) of the primary flip-flop to its data input, the flip flop can operate as a divide-by-two and divide-by-four clock divider. If you send audio rate signals into it, you can think of it as a two octave frequency divider from the Q÷2 output.
Additionally, the clock input of the flip flop is normaled to the output of the hard OR, and the top input of the hard OR is normaled to the soft XNOR, so if you just patch a signal into one of the inputs of the soft logic section you’ll get a bunch of useful signals from most outputs of the module.
Pricing and Availability:
This module begins shipping in February 2025, priced at $225 USD. See the muSonics site for full details.
