John Kobbe joined Tektronix in 1951 to work in the test department.
Having had no formal engineering education, Kobbe co-initiated a "scope class" to design and build an oscilloscope in the test department, during which he designed an un-blanking circuit and a simplified sweep circuit that were eventually used in the 300 series.
Kobbe then joined the Engineering department and later into the Advanced Research group..
Products and Inventions
- unblanking and sweep circuits for 310, 315
- 575 curve tracer
- Use of lossy coax cable in scope probes: US Patent 2883619, Electrical Probe. John Kobbe and Bill Polits. Applied 1956. (PDF)
- US Patent 2,930,986, Distributed Amplifier, John Kobbe and Bill Polits. Applied 1956. (PDF)
- T581 CRT (ref. Staric/Margan paper)