Quantity: 1 each of these in one physical panel of 32 jacks
This module consists of a pulse divider with integer divisions between 2 and 8. The divider is used to generate interrelated pulses for use in creating poly-rhythms, and unusual sequences. It can also be run at audio frequencies as a sub-oscillator/sub harmonic generator. The output pulse from each division is one clock cycle in length, and the relationship between pulses is fixed. Specifically, the /4 output will correspond to every second pulse from the /2 output. Likewise, the /8 will correspond to every second pulse from the /4 output, and the /6 will correspond to every second pulse from the /3 output. Needless to say, the /2 and /3 groups are not related to each other, or to the /5 or /7 outputs. All however share a common external reset, so they can be synchronized. All outputs go high on reset.
CGS 13 Gated Comparator (Shifter)
I have used an 8 stage digital shift register as the memory element. Each clock pulse, the remembered level (logic 0 or logic 1) is moved into the next stage “bucket brigade” fashion, and the new value stored in the first memory cell. The result is a level (on or off) of the data input at the first output, plus time delayed versions of previous levels across the remaining outputs.
The Quad Logic Gate is a very simple module that can be built in one of six flavors : XOR, OR, AND, NOR, XNOR and NAND. It is a simple way to gain additional control of gate and trigger pulses within a system. It can also be used for some simple signal multiplying. The XOR is well known as a square wave “ring modulator”.
Modifications:
These are stripped down to essentials to fit into one Front-Panel-Express panel. It is the most dense of any of my modules behind the panel, with a total of eight PC boards. I added a divide-by-one output to the Pulse Divider as the output of the clock comparator. I omitted the “comparator out” of the gated comparator; it is a digital shifter. The Quad Logic Gate is built with XNOR gates, CD4077, which make a digital inverter using one input, a digital ring modulator with two inputs, and they convert any analog signal to a pulse train. All outputs are buffered by CGS-56 Gate Converters for +/-5V pulses (that took five CGS-56 boards).
