SE8303587L - MICROTOM CONTROL SYSTEM - Google Patents
MICROTOM CONTROL SYSTEMInfo
- Publication number
- SE8303587L SE8303587L SE8303587A SE8303587A SE8303587L SE 8303587 L SE8303587 L SE 8303587L SE 8303587 A SE8303587 A SE 8303587A SE 8303587 A SE8303587 A SE 8303587A SE 8303587 L SE8303587 L SE 8303587L
- Authority
- SE
- Sweden
- Prior art keywords
- drive
- control system
- movement
- specimen arm
- comparatively
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/06—Devices for withdrawing samples in the solid state, e.g. by cutting providing a thin slice, e.g. microtome
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/06—Devices for withdrawing samples in the solid state, e.g. by cutting providing a thin slice, e.g. microtome
- G01N2001/065—Drive details
- G01N2001/066—Drive details electric
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A microtome, in particular an ultramicrotome has a drive control system, by means of which the movement of the specimen arm, relative to the knife, is subdivided into a comparatively slow cutting movement and a more rapid return movement. The drive-control system gradually decelerates the specimen arm at the transition from the comparatively rapid return movement to the slower cutting movement, so that a jerk, which would generate mechanical vibrations in the drive system, is avoided and the specimen arm is smoothly decelerated from the comparatively high speed, to the lower speed. For this purpose, the drive-control system incorporates an electronic control module, by means of which the control voltage for the drive motor is linearly varied between the comparatively high control voltage value and the lower control voltage value, the rate of rise or, as the case may be, the rate of fall of the voltage being adjusted in a manner such that the specimen arm operates without transitional vibrations. For this purpose, the electronic control module incorporates a constant-current source, and a capacitor which is to be charged by this constant- current source, or which is to be discharged, as the case may be.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823223347 DE3223347C1 (en) | 1982-06-23 | 1982-06-23 | Drive control for a microtome, especially an ultramicrotome |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE8303587D0 SE8303587D0 (en) | 1983-06-22 |
| SE8303587L true SE8303587L (en) | 1983-12-24 |
Family
ID=6166596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8303587A SE8303587L (en) | 1982-06-23 | 1983-06-22 | MICROTOM CONTROL SYSTEM |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS599539A (en) |
| DE (1) | DE3223347C1 (en) |
| FR (1) | FR2529334A1 (en) |
| GB (1) | GB2122377B (en) |
| SE (1) | SE8303587L (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT399227B (en) * | 1990-04-11 | 1995-04-25 | Sitte Hellmuth | DEVICE FOR CONTROLLING THE DRIVE AND THE FEED OF A MICROTOM, IN PARTICULAR ULTRAMICROTOMA |
| JP4947702B2 (en) * | 2006-10-10 | 2012-06-06 | 日本インター株式会社 | Pressure contact type high power thyristor module |
-
1982
- 1982-06-23 DE DE19823223347 patent/DE3223347C1/en not_active Expired
-
1983
- 1983-06-20 GB GB08316679A patent/GB2122377B/en not_active Expired
- 1983-06-21 FR FR8310223A patent/FR2529334A1/en not_active Withdrawn
- 1983-06-21 JP JP11030983A patent/JPS599539A/en active Pending
- 1983-06-22 SE SE8303587A patent/SE8303587L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2529334A1 (en) | 1983-12-30 |
| JPS599539A (en) | 1984-01-18 |
| GB8316679D0 (en) | 1983-07-20 |
| SE8303587D0 (en) | 1983-06-22 |
| DE3223347C1 (en) | 1983-09-29 |
| GB2122377A (en) | 1984-01-11 |
| GB2122377B (en) | 1985-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
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