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Cam switches: Difference between revisions
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Cam switches are used in many Tek instruments, particularly in 7000 series plug-ins, but also in 400-series portable scopes. | Cam switches are used in many Tek instruments, particularly in [[7000-series plug-ins]], but also in 400-series portable scopes. | ||
The lobes on the rotary cam encode the lookup table of which contacts should be open or closed in each rotational position of the shaft, | The lobes on the rotary cam encode the lookup table of which contacts should be open or closed in each rotational position of the shaft, | ||
which is typically rotated by a knob on the front panel of the instrument. | which is typically rotated by a knob on the front panel of the instrument. | ||
A benefit of this design is low parasitics compared to traditional rotary wafer switches. | A benefit of this design is low parasitics compared to traditional rotary wafer switches. | ||
==Maintenance== | |||
* [http://hakanh.com/dl/docs/kitinstructions/040-0541-00.pdf 040-0541-00: Cam switch repair kit (1970)] | |||
==Pictures== | |||
<gallery> | <gallery> | ||
Tek 7a19 frontright.jpg|Cam switch in [[7A19]] | Tek 7a19 frontright.jpg|Cam switch in [[7A19]] | ||