Tuesday, April 25, 2017

Not fully satisfied with the usability of my curve tracer, especially its 'quick test' function

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TESTING HW100 TUBES AND WORKING WITH NEW CURVE TRACER I discovered that one of the final tubes, a 6146A, had a cracked envelope and the an...
Monday, April 24, 2017

Vacuum tube curve tracer completed and working perfectly

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VACUUM TUBE CURVE TRACER CONSTRUCTION I installed the barrier strip, insulated joints, tied down the fuse holders and choke inside, trimme...
Sunday, April 23, 2017

Wrapped up tube checker construction - 99% done

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VACUUM TUBE CURVE TRACER CONSTRUCTION This morning while thinking about testing the tubes in our 026 keypunches at the Computer History Mu...
Friday, April 21, 2017

Finished main wiring, tested by measuring a 6AU6

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VACUUM TUBE CURVE TRACER CONSTRUCTION I finished wiring the voltage loops for all the regular connections from the circuit board. After ve...
Thursday, April 20, 2017

Construction continues on vacuum tube curve tracer

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VACUUM TUBE CURVE TRACER CONSTRUCTION I grabbed some lockwashers and other hardware and attempted to install the three remaining rotary sw...

1401 restoration work and continued curve tracer construction

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I spent part of the day with the plumber as he finished up the tankless water heater installation and some other work, then spent the rest o...
Tuesday, April 18, 2017

Building curve tracer into case

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VACUUM TUBE CURVE TRACER CONSTRUCTION With the circuit board itself working flawlessly, it is time to build out an enclosure with tube s...