Analog integrator module for Analog Paradigm Model-1 computer.
The INT4-module contains four time integrators, each offering four time constants (1, 10, 100, and 1000). Each integrator has six inputs, three of which are weighed with 1 while the other three have a weight of 10. The jack denoted by IC is used to feed an input condition to the integrator while the SJ jack allows access to the summing junction of the operational amplifier and can be used to connect additional networks into the feedback loop of the integrator such as diodes to limit its output value etc. The SJ input may also be used to extend the input capabilities by connecting passive resistor networks such as those contained in the XIR-module (see below).
The two right-most integrators have to additional jack each, labeled ModIC und ModOP. Using these inputs it is possible to override the central control signals generated by the CU by applying external control signals. This is often useful when two or more groups of individually controlled integrators are required (e.g. in optimization problems).
See also the SUM8 module.