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Custom Built Test InstrumentsI designed and built many custom "engineered" Test Instruments. They were not prefect, as only one or two were fabricated. That means it will be costly to produce such instruments. It is just like tooling, you have to make some numbers to recover costs, or price it very high to compensate for the wastages and iterations. But things are better off now for building custom instruments. Yet a design firm has to make modules and keep ready, then put together a solution/system, program and ship. When making custom equipment, you have to have an extended service agreement like 5 years. Also request a minimum order of at least 5. Make your R&D and Inventory Modular. That way it is profitable and some money available for reinvestment on instruments and Equipment for calibration and quality. Transistor Beta and Vce TesterThis was a Beta Hfe and Vce Measuring Instrument used in Incoming Inspection of Power Transistors made by me 20 years back.Related Resources -
 Measureall Workbench Test InstrumentThis was a Student Project of mine, it is a very basic instruments that could do most of the tasks on a test bench. The cabinet used, was available as a part of a Hi-Fi DIY
System, The
Range and Mode switches were Modular Stackable Interlocked MultiPole
Switches. The rest of the Interface were wirewound pots, jacks, sockets
and plugs. The front panel was Engraved Acrylic, the panel was the
toughest issue we tackled.  |