Available online
Description
Gary Alexander introduces the programme. In the background Gaby Smol and Glyn Martin demonstrate models of a variable reluctance and a potential divider transducer. Gaby Smol with a potential divi...der pressure transducer and a model of the transducer. He explains the principles of the transducer and demonstrates using the model. Gary Alexander with a variable reluctance pressure transducer. He puts the transducer into his pocket and turns to a model of the transducer. Alexander points out the various components of the model and explains how they work. He explains how the transducer works electrically and uses the model to demonstrate. Voltage wave forms generated in the model are displayed on an oscilloscope screen. Alexander explains how one can detect the direction of pressure variation from a reference point in a variable reluctance transducer. He uses the model to demonstrate. Shots of the voltage wave forms generated on the oscilloscope screen which is wired to a variable reluctance transducer. Commentary by Glyn Martin explains how a phase detector works (direction as well as amplitude of pressure from the reference point can be determined). Martin uses a working model of a phase detector to aid his commentary. Gary Alexander with the variable reluctance transducer working model again. This time a phase detector has been wired in. Alexander demonstrates the transducer. Alexander shows a partially assembled variable reluctance transducer. He points out its various components. Alexander uses a schematic diagram of a variable reluctance pressure transducer to show how it is assembled. He then shows a disassembled transducer and relates the components to the diagram. Lines of magnetic flux are shown. Alexander shows a transducer which has been sawn in half. He compares this sectioned transducer with the diagram. Alexander sums up.
Gary Alexander introduces the programme. In the background Gaby Smol and Glyn Martin demonstrate models of a variable reluctance and a potential divider transducer. Gaby Smol with a potential divi...der pressure transducer and a model of the transducer. He explains the principles of the transducer and demonstrates using the model. Gary Alexander with a variable reluctance pressure transducer. He puts the transducer into his pocket and turns to a model of the transducer. Alexander points out the various components of the model and explains how they work. He explains how the transducer works electrically and uses the model to demonstrate. Voltage wave forms generated in the model are displayed on an oscilloscope screen. Alexander explains how one can detect the direction of pressure variation from a reference point in a variable reluctance transducer. He uses the model to demonstrate. Shots of the voltage wave forms generated on the oscilloscope screen which is wired to a variable reluctance transducer. Commentary by Glyn Martin explains how a phase detector works (direction as well as amplitude of pressure from the reference point can be determined). Martin uses a working model of a phase detector to aid his commentary. Gary Alexander with the variable reluctance transducer working model again. This time a phase detector has been wired in. Alexander demonstrates the transducer. Alexander shows a partially assembled variable reluctance transducer. He points out its various components. Alexander uses a schematic diagram of a variable reluctance pressure transducer to show how it is assembled. He then shows a disassembled transducer and relates the components to the diagram. Lines of magnetic flux are shown. Alexander shows a transducer which has been sawn in half. He compares this sectioned transducer with the diagram. Alexander sums up.
| Module code and title: | T291, Instrumentation |
|---|---|
| Item code: | T291; 03 |
| First transmission date: | 18-04-1974 |
| Published: | 1974 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:24:00 |
| + Show more... | |
| Producer: | David Jackson |
| Contributors: | Gary Alexander; Glyn Martin; Gaby Smol |
| Publisher: | BBC Open University |
| Keyword(s): | Divider transducer; Magnetic flux; Models; Oscilloscope screen; Phase detector; Schematic diagram; Variable reluctance; Voltage wave forms |
| Master spool number: | 6HT/71184 |
| Production number: | 00525_5119 |
| Videofinder number: | 1063 |
| Available to public: | no |
