While sourcing inputs and outputs usually make use of PNP transistors and sinking of NPN transistors, there are inputs and outputs with the exact opposite configuration. The type of transistor is less important than the functional nature of the input or output, that is, whether it is sources or sinks.
Superior Controls is presently implementing pharmaceutical control systems throughout the country. Validation documentation is the key to success.
Superior Controls was involved with an expansion of a Qualified Building Automation System (QBAS) while simultaneously providing the validation documentation and testing in accordance with GAMP 5.0 guidelines.