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The Peterson Diode Matrix Solid State Switching System has become a standard in the pipe organ industry, used by hundreds of organ builders in many thousands of organs world wide. Early installations have now been in use for well over thirty years, and although the details have evolved as improvements were made, the innovative yet simple modular design pioneered by Peterson in the 1960s still makes this a favorite for many projects today. The quick response, maintenance-free reliability due in part to its lack of moving parts, and silent operation all contribute to this system's phenomenal success. For many applications, the relatively low technology level of diode matrix means less cost than with multiplexing and computer based systems. This product is credited by many for transforming the way electric action organs are controlled throughout the pipe organ industry. Each Peterson Diode Matrix Switching System is a custom built electronic panel for performing the key switching and stop control functions of a pipe organ. Designed to work with any wind chest having an electric action, it is equally applicable to electro- pneumatic or all-electric types. Stops can be straight, or any degree of duplexing or unification can be employed. Diode Matrix Switching Systems consist of a number of modular assemblies of solid state components including transistors, diodes, integrated circuits and resistors on one or more panels designed to mount in or near the organ chamber(s). Specially designed disconnectable junctions allow the various modules to be factory tested and assembled. At the time of installation, the installer simply wires a cable from |
each chest to a connector provided, which is then plugged onto its related assembly. Similarly, single switch contacts associated with the keys of each playing manual, the pedal board, and from the stop tablets, must be wired to connectors which also plug in as clearly labeled. Other than the above, the Peterson Solid State Switching System is supplied completely wired, tested and documented. The Peterson Solid State Switching System originated as a modern substitute for mechanical relays that could offer much higher reliability with virtually no maintenance. With solid state, thousands of switch contacts are replaced by semiconductor devices, which can never pit, corrode or require adjustment. All components are sealed against humidity, dust and other environmental factors. Except for one contact per playing key, and one contact per stop control, there are absolutely no contacts to ever require adjusting or cleaning. Because there are no moving parts, there is nothing to stick, bind or make noise. Except for the movement of the stop tablets and the playing keys, the action is totally silent. It is indeed startling to push the Sforzando piston and have the full organ appear without the slightest attendant noise. Since the solid state switches operate at the speed of light, the action is totally responsive without the lag that is frequently associated with mechanical relays. Because the playing keys must each operate only a single key switch, the loading on the key is insignificant, and the key tension and type of return spring can be selected and adjusted for the best possible "feel." |