User contributions for Benjamin

22:4122:41, 16 August 2024 diff hist +120‎ 308 ‎ Added more PSU images
22:4022:40, 16 August 2024 diff hist +55‎ N File:308 mains input PCB.jpg ‎ Inside side of mains input PCB of Tek 308 current
22:3722:37, 16 August 2024 diff hist +113‎ N File:308 PSU Internals1.jpg ‎ Inside the PSU of the Tektronix 308. Mostly empty space, which helps contribute to its portability. current

17:0117:01, 12 August 2024 diff hist +61‎ 308 ‎No edit summary
16:5916:59, 12 August 2024 diff hist +90‎ N File:Tek 308 under SN303537-UP.jpg ‎ Underside of Tek 308 with SN303537-UP. Notice the focus potentiometer added. current

20:4220:42, 28 June 2024 diff hist +115‎ 7904 ‎No edit summary
20:3720:37, 28 June 2024 diff hist +232‎ N File:070-1195-02.pdf ‎ The manual version covers the early serial numbers of 7904 scopes. Covers serials above 86000 and under 260000 I believe. Needs more information. Currently listed as just the -02 version of the 7904 instruction manual.

23:5123:51, 19 June 2024 diff hist +147‎ 7B53A ‎No edit summary
23:4823:48, 19 June 2024 diff hist +36‎ N File:7B53N left.jpg ‎ left internal of 7B53N current
23:4723:47, 19 June 2024 diff hist +43‎ N File:7B53N right.jpg ‎ right internal image of 7B53N current
23:4423:44, 19 June 2024 diff hist +40‎ N File:20240619 122403.jpg ‎ frontal image of the 7B53N current

17:2217:22, 25 April 2024 diff hist +148‎ SC502 ‎No edit summary
17:1717:17, 25 April 2024 diff hist +76‎ N File:SC502 Right Internal.jpg ‎ Internals of right side of SC502. Photo taken on a cloudy day. current
17:1617:16, 25 April 2024 diff hist +75‎ N File:SC502 Left Internal.jpg ‎ Internals of left side of SC502. Photo taken on a cloudy day. current
17:1417:14, 25 April 2024 diff hist +66‎ N File:SC502 front.jpg ‎ Front image of SC502. Taken on a cloudy day outside.

09:3009:30, 27 March 2024 diff hist −81‎ SKA6516 ‎ Forgot to add axes annotations. I also appear to have been incorrect in a multitude of stances. I apologize.

12:2312:23, 25 March 2024 diff hist +250‎ SKA6516 ‎ Added some curve traces for the 151-0367-00 showcasing the parasitic reverse diode junction.
12:1612:16, 25 March 2024 diff hist +138‎ N File:2N3053 curvetrace.jpg ‎ Typical curve trace of a 2N3053 transistor going in the negative cycle. The transistor has a high reverse breakdown voltage. current
12:1012:10, 25 March 2024 diff hist +204‎ N File:151-0367-00 curvetrace fault.jpg ‎ Curve trace of a 151-0367-00 transistor in the negative-going cycle. There is a parasitic diode junction between the emitter and collector of this transistor. This transistor has this fault. current
12:0812:08, 25 March 2024 diff hist +85‎ N File:151-0367-00 curvetrace.jpg ‎ Typical curve trace of a 151-0367-00 transistor in positive-going form. current

22:5922:59, 4 March 2024 diff hist +70‎ 7A19 ‎ added image of variable delay system
22:5722:57, 4 March 2024 diff hist +147‎ N File:7A19 delay.jpg ‎ Internals of the mechanical delay system of the 7A19 plug-in. This mechanical delay is present only in 7A19s with option 4 installed. current

23:0423:04, 28 February 2024 diff hist +635‎ FG501 ‎ Added some more details
21:5221:52, 28 February 2024 diff hist +74‎ PG501 ‎ Added risetime waveform
21:4921:49, 28 February 2024 diff hist +144‎ PG501 ‎ Added my own photos of my own PG501. These are photos of what I belive to be an early serial numbered unit.
21:4421:44, 28 February 2024 diff hist +114‎ N File:PG501 PCB BOTTOM EARLY.jpg ‎ Photo of the bottom PCB side on the PG501 TM500 plug-in. The serial number for this unit is B081739. current
21:4321:43, 28 February 2024 diff hist +111‎ N File:PG501 PCB TOP EARLY.jpg ‎ Photo of the top PCB side on the PG501 TM500 plug-in. The serial number for this unit is B081739. current
21:0321:03, 28 February 2024 diff hist +199‎ N File:PG501 Risetime.jpg ‎ This is the rise of a Tek PG501 TM500 plug-in. Measured to be 2.1ns, the plug-in is specified at 3.5ns. Measurements were taken on Tektronix 7904 mainframe with plug-ins 7A19 and 7B85. current

19:4419:44, 30 January 2024 diff hist 0‎ m 7B53A ‎ Correcting a small typo.
19:4319:43, 30 January 2024 diff hist +109‎ 7B53A ‎ Added info for 7B53N
19:3719:37, 30 January 2024 diff hist +29‎ 7B53A ‎No edit summary
19:3519:35, 30 January 2024 diff hist +61‎ N File:7B53N.png ‎ Frontal photo of the 7B53N 7000 Series plug-in. current

23:0423:04, 6 January 2024 diff hist +67‎ 2230/Repairs ‎No edit summary
21:0821:08, 6 January 2024 diff hist +100‎ 2230 ‎ Added to mods for easy finding

12:4612:46, 11 December 2023 diff hist 0‎ m P6109 ‎ Frequency bandwidth inaccuracy in title.

12:1712:17, 24 November 2023 diff hist +64‎ 2230 ‎No edit summary
12:1612:16, 24 November 2023 diff hist +44‎ N File:2230 menu ref.jpg ‎ The 2230 menu reference guide. current
12:0512:05, 24 November 2023 diff hist +241‎ 2230/Repairs ‎No edit summary
12:0212:02, 24 November 2023 diff hist +102‎ 2230/Repairs ‎No edit summary

20:4920:49, 8 November 2023 diff hist +634‎ N 191/Repairs ‎ Experience from me trying to repair 2 Tek 191s. Both had same problems. One more in the past also had similar problems.

10:2710:27, 4 October 2023 diff hist +63‎ SKA6516 ‎No edit summary
10:2510:25, 4 October 2023 diff hist +403‎ Talk:SKA6516 ‎No edit summary
10:1610:16, 4 October 2023 diff hist +47‎ N File:Component Tester.jpg ‎ Image of a cheap component tester current
10:1310:13, 4 October 2023 diff hist +83‎ N File:BJT reverse diode.png ‎ Circuit equivalent of a BJT with a reverse polarity protection diode. current