GE manufactured the IC3600AIAD1B as a Translating Isolator Card for the Mark I/Mark II series. These two series were designed by GE for the management of gas and steam turbines. The MKI was first released commercially in the late 1960s. The MKII followed a few years later in 1973. Since then, these two first Speedtronic systems have been used on almost every world continent in temperatures from -50 degrees Celsius to +50 degrees Celsius, in remote piping stations, in offshore applications, for large base-loaded industrial drives, all with accuracy, high performance, and longevity. The MKI and MKII are built with some redundancies built within the system to ensure safe and reliable machine operation.
The IC3600AIAD1B has many components positioned on a small card. A number of components have been placed in a vertical position. Two corners have been drilled for mounting. The board is stamped with the GE logo. It is marked “68A999577,” marked with the board identification, marked 002/03 on the front and 003/04 on the back. It is also marked ‘STAR’ in one corner. One edge has fifty-one pins inserted. This edge is numbered one through fifty-one (by fives.)
The IC3600AIAD1B is built with a coil inductor, three potentiometers, and two relays. The relays are marked 68A993075G1 0391 and 68A993076G1 1596. The board has sixteen transistors. A heat sink has been fitted around one transistor.
The IC3600AIAD1B is built with ceramic capacitors of varying design. Capacitors of other materials are used as well. The board has over seventy resistors, which are primarily metal film. Technical support (including manuals and data sheets) for the IC3600AIAD1B was supplied by GE.