GB877123A - Improvements relating to shock acceleration measuring apparatus - Google Patents
Improvements relating to shock acceleration measuring apparatusInfo
- Publication number
- GB877123A GB877123A GB3530258A GB3530258A GB877123A GB 877123 A GB877123 A GB 877123A GB 3530258 A GB3530258 A GB 3530258A GB 3530258 A GB3530258 A GB 3530258A GB 877123 A GB877123 A GB 877123A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- input
- cathode
- pulse
- transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
877,123. Accelerometer circuit. FERRANTI Ltd. Nov. 3, 1959 [Nov. 4, 1958], No. 35302/58. Class 40 (1). [Also in Group XL (c)] The output of a piezo-electric or electrostatic shock accelerometer is passed to an amplifier having a network arranged to provide during each pulse (square or triangular) from the transducer an exponentially-decreasing negative feedback of waveform such as to compensate for the distortion of the input waveform caused by the inherent capacitances and resistances of the transducer and its connections and the input resistance of the amplifier. In Fig. 2 the signal from a piezo-electric transducer 1 is passed through a cathode-follower 2 to the input grid 3 of a cascade amplifier. Due to the time-constants of the circuits the top of the pulse (assumed square) would droop, but this tendency is counteracted by feeding back to the upper grid through a capacitor 10 and resistor 11 a voltage which is large at the commencement of the pulse and falls off exponentially. The net anode waveform is the difference between the cathode and grid waveforms of valve 5, and can be arranged to be flat-topped. If the input is of saw-tooth form the feedback circuit prevents the top from being rounded off. The cascade circuit can be replaced by a cathode-coupled amplifier, Fig. 4 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3530258A GB877123A (en) | 1958-11-04 | 1958-11-04 | Improvements relating to shock acceleration measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3530258A GB877123A (en) | 1958-11-04 | 1958-11-04 | Improvements relating to shock acceleration measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB877123A true GB877123A (en) | 1961-09-13 |
Family
ID=10376175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3530258A Expired GB877123A (en) | 1958-11-04 | 1958-11-04 | Improvements relating to shock acceleration measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB877123A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2512104C1 (en) * | 2012-10-11 | 2014-04-10 | Федеральное Государственное Бюджетное Учреждение Науки Институт Машиноведения Им. А.А. Благонравова Российской Академии Наук | Device for measurement of blow duration |
-
1958
- 1958-11-04 GB GB3530258A patent/GB877123A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2512104C1 (en) * | 2012-10-11 | 2014-04-10 | Федеральное Государственное Бюджетное Учреждение Науки Институт Машиноведения Им. А.А. Благонравова Российской Академии Наук | Device for measurement of blow duration |
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