Article entitled 'Understanding Semiconductors'

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Article entitled 'Understanding Semiconductors'

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Daphne Oram ArchiveORAM

Early conceptionsORAM/1/1

Calouste Gulbenkian FoundationORAM/1/2

Patents and trademarksORAM/1/3

Log books and notesORAM/1/4

Technical drawings and correspondenceORAM/1/5

Notes on Mini-OramicsORAM/1/5/1

JE's handwritten notes on the Scan Oscillator and Oscillator Reader and Latch CircuitORAM/1/5/2

Paper on electro-acoustic cw filter and note on envelopeORAM/1/5/3

Handwritten notes regarding OramicsORAM/1/5/4

Handwritten notes regarding Mini-OramicsORAM/1/5/5

Timebase Schematic as used in OramicsORAM/1/5/6

Mini-Oramics Circuits, redrawn and costed notesORAM/1/5/7

Paper on Optical generator traces scope-mounted masksORAM/1/5/8

Information from Klaus R. May 1981ORAM/1/5/9

Notes of capacitorsORAM/1/5/10

Studio notes 23rd JuneORAM/1/5/11

Drawing of Mini-Oramics Hold and Release circuitORAM/1/5/12

Sketch of Mini-Oramics machineORAM/1/5/13

Costing and plans for Mini-Oramics machineORAM/1/5/14

Schematic of a Delay UnitORAM/1/5/15

A series of drawings and notes regarding Capacitors and circuitsORAM/1/5/16

Notes on frequenciesORAM/1/5/17

A sketch showing an overview of OramicsORAM/1/5/18

A schematic for a Delay UnitORAM/1/5/19

A schematic for the Oramics systemORAM/1/5/20

Request for purchase of Dry Reed Inserts from G.W.M. Radio LtdORAM/1/5/21

Handwritten note by DaphneORAM/1/5/22

Notes on the Oramics systemORAM/1/5/23

Leaflet for Photain Controls LimitedORAM/1/5/24

Notes on Mini Oramics ProgramORAM/1/5/25

Leaflet for Photain Controls Limited regarding Photoconductive CellsORAM/1/5/26

Notes on the Oramics systemORAM/1/5/27

Circuit Board SchematicsORAM/1/5/28

Leaflet for Kopp VariatorsORAM/1/5/29

Design for Pitch Control for Oramics SystemORAM/1/5/30

Notes and diagrams on circuitryORAM/1/5/31

Notes, diagrams and small bag of wires regarding OramicsORAM/1/5/32

Information about the 'Gas-filled Photocell'ORAM/1/5/33

Notes and drawing regarding the photocellORAM/1/5/34

Graph of Changes in Pitch against PhonsORAM/1/5/35

Various drawings and graphsORAM/1/5/36

Notes regarding parts for OramicsORAM/1/5/37

Receipt for parts for the Oramics systemORAM/1/5/38

Notes on details for Oramics systemORAM/1/5/39

Letters from E C Avery at Gordon Fraser Gallery regarding Cellulose FilmORAM/1/5/40

Copy of letter from Daphne to R.S. Components LTDORAM/1/5/41

Envelope containing correspondence and notes regarding Mini OramicsORAM/1/5/42

Brown, cardboard folder entitled 'Oramics Graphic Sound Circuits'ORAM/1/5/43

Notebook containing details of 'Oramics'ORAM/1/5/44

Schematic of Oramics graphic sound machineORAM/1/5/45

Patent for 'Reproducing Apparatus and Method' by A A KucherORAM/1/5/46

Contents for diagrams of Playback Amplifier / Equalizer for 12 track machineORAM/1/5/47

Schematic of Oramics machineORAM/1/5/48

Drawing of Shapes for Insertion into Oramics machineORAM/1/5/49

Drawing of Shapes for Insertion into Oramics machineORAM/1/5/50

Notes on cathode ray tubesORAM/1/5/51

Notes regarding battery connections for OramicsORAM/1/5/52

List of inks & pencils tested for drawing waveshapes on filmORAM/1/5/53

"Point One Stereo" Pre-Amplifier Instruction sheetORAM/1/5/54

Note entitled 'Extra Oramics 1961' and handwritten notes on a scrap of paperORAM/1/5/55

"Stereo 50" Power Amplifier Instruction SheetORAM/1/5/56

Repair notes for Leak ampORAM/1/5/57

Notes on circuitry for Oramics machineORAM/1/5/58

Envelope and paper with notes regarding Oramics circuitryORAM/1/5/59

3 pages of notes regarding circuitry, harmonics and vibratoORAM/1/5/60

Oramics settings for 'Four Aspects', Nov 30th 1968ORAM/1/5/61

General notes about OramicsORAM/1/5/62

Notes and circuit diagrams for OramicsORAM/1/5/63

Notes on Oramics circuitsORAM/1/5/64

Diagrams and note regarding the Oramics machineORAM/1/5/65

Diagram of Shelf Power Pack ProgrammerORAM/1/5/66

CRT DiagramORAM/1/5/67

BIAS POTS diagramORAM/1/5/68

Notes on volume control and power pack for OramicsORAM/1/5/69

Brenell Hi-Fi Tape Link leafletORAM/1/5/70

Magna-Stripe Type Card by Reeves SoundcraftORAM/1/5/71

Typed list of Resistors, Capacitors and other devicesORAM/1/5/72

Schematic for a 12 Channel Mixer and 4 Channel Group MixerORAM/1/5/73

Notes of frequenciesORAM/1/5/74

Letter from Daphne to Joan Burchardt regarding OramicsORAM/1/5/75

Letter from Daphne to Joan Burchardt regarding illness and Mini OramicsORAM/1/5/76

Exercise book containing various notes handwritten by DaphneORAM/1/5/77

Exercise book entitled 'Mrs Kenny's Copies' containing various notes handwritten by DaphneORAM/1/5/78

Sound Data and References ATR Information Book No.6ORAM/1/5/79

Leaflet regarding 'Gas-filled Photocell'ORAM/1/5/80

List of components to order for OramicsORAM/1/5/81

Components order to Eaton audio with dispatch confirmationORAM/1/5/82

Note on reading Acoustical Holography Vol I regarding Sound Generation in a gasORAM/1/5/83

Eaton Audio Components ListORAM/1/5/84

Leaflet for V.L.F counterORAM/1/5/85

Specification sheets for PhototransistorsORAM/1/5/86

Correspondence and leaflet from Stabilo regarding OHP pensORAM/1/5/87

Stock Price list for Jermyn including receipt written by Daphne for 5 X MFC 6040'sORAM/1/5/88

Various handwritten notes on OramicsORAM/1/5/89

Catalogue and cover letter from SCS ComponentsORAM/1/5/90

Catalogue from TeleserviceORAM/1/5/91

Clipping from the newspaper advertising 'TI Opto Devices from Blueline'ORAM/1/5/92

Letter from Proops Brothers LTD regarding Cadmium Selenide PhotocellsORAM/1/5/93

Letter from Guest International Limited regarding pressure sensitive transistorsORAM/1/5/94

Leaflet for Multi Photocell Array from Photain Controls LTDORAM/1/5/95

Letters to W.H.Smith and Gordon Fraser LTD regarding cellophaneORAM/1/5/96

Cover letter and leaflets from Data Instrumenst LTDORAM/1/5/97

Volume control notes, May 1973ORAM/1/5/98

Notes and circuit diagramsORAM/1/5/99

K.R.Whiston Brochures and receiptsORAM/1/5/100

Notes on relays and circuit boardsORAM/1/5/101

Correspondence and brochures from G.W.M. Radio LTDORAM/1/5/102

Letter from Daphne to Photronic Controls LtdORAM/1/5/103

Order from Daphne to R.S.Components LtdORAM/1/5/104

Circuit diagrams and notesORAM/1/5/105

Letter from Rank Precision IndustriesORAM/1/5/106

Envelope with notes on the back and two sheets of notepaper with additional thoughts on themORAM/1/5/107

Cover letter and three brochures from Hartley, Reece & Company regarding inks and pensORAM/1/5/108

Slip folder that previously contained papers regarding Mini-OramicsORAM/1/5/109

Drawings of wave shapesORAM/1/5/110

Circuit drawingsORAM/1/5/111

Diagram of circuit for Transistor Tape Replay AmplifierORAM/1/5/112

Oramics Circuitry diagramORAM/1/5/113

Notes and to do list from 1968 and 1979ORAM/1/5/114

Studio turn on and turn off instructionsORAM/1/5/115

Instruction cards for Oramics system and Tower Folly StudioORAM/1/5/116

Various notes and thoughtsORAM/1/5/117

Circuit diagram for -9 & -6 volt power supplyORAM/1/5/118

Notes on Studio FaceliftORAM/1/5/119

Circuit Diagram for Oramics StudioORAM/1/5/120

Circuit Diagram for Oramics StudioORAM/1/5/121

Circuit Diagram for Oramics StudioORAM/1/5/122

Circuit Diagram for Oramics StudioORAM/1/5/123

Circuit Diagram for Oramics StudioORAM/1/5/124

Circuit Diagram for Oramics StudioORAM/1/5/125

Circuit Diagram for Oramics StudioORAM/1/5/126

Circuit Diagram for Oramics StudioORAM/1/5/127

Circuit Diagram for input amplifierORAM/1/5/128

Output Amplifier NotesORAM/1/5/129

Circuit diagram for output amplifierORAM/1/5/130

Pre-amp for Decca Deram and additional circuit diagramORAM/1/5/131

Y amp for programmer and other circuit diagramORAM/1/5/132

Circuit DiagramORAM/1/5/133

Circuit DiagramORAM/1/5/134

Horizontal Sun Block DiagramORAM/1/5/135

Operating instructions for Type 200-CUH and Type 200-CMH "Variac" TransformersORAM/1/5/136

Radio frequency and wavelength diagramORAM/1/5/137

Reactance Frequency ChartORAM/1/5/138

Leaflets for Bi-Pak SemiconductorsORAM/1/5/139

Article entitled 'Fluorescent Camping Light'ORAM/1/5/140

Article entitled 'recording Level indicator'ORAM/1/5/141

Article entitled 'An enthusiast looks at colour'ORAM/1/5/142

Article entitled 'Emitter-coupled, Emitter-timed Multivibrators'ORAM/1/5/143

Article entitled 'Unijunction Process Timer and Oscillator'ORAM/1/5/144

Article entitled 'Analogue Computer'ORAM/1/5/145

Article entitled 'nucleonics for the Experimenter'ORAM/1/5/146

Article entitled 'Light Operated Switch'ORAM/1/5/147

Article entitled 'Silicon Planar Transistors'ORAM/1/5/148

Article entitled 'Portable Keyless Organ'ORAM/1/5/149

Article entitled 'Electronorama, Highlights from the contemporary scene'ORAM/1/5/150

Article entitled 'An E.H.T Converter'ORAM/1/5/151

Article entitled 'New Telecine System'ORAM/1/5/152

Article entitled 'Photomultipliers'ORAM/1/5/153

Article entitled 'Push-pull amplifier'ORAM/1/5/154

Leaflet for Tannoy Speakers 'The Monitor Gold'ORAM/1/5/155

Article entitled 'Wien Bridge Oscillator'ORAM/1/5/156

Article entitled 'Understanding Semiconductors'ORAM/1/5/157

Article entitled 'A Novel Transistor Preamp'ORAM/1/5/158

Article entitled 'Transistor Inverter'ORAM/1/5/159

Article entitled 'Transistor Tester'ORAM/1/5/160

Article entitled 'Understanding Semiconductors'ORAM/1/5/161

Article entitled 'Suggested Circuits'ORAM/1/5/162

Article entitled 'A Sensitive Thermostat'ORAM/1/5/163

Article entitled 'Microelectronics'ORAM/1/5/164

Article entitled 'International Components Exhibition'ORAM/1/5/165

Article entitled 'Integrated Circuit Tape Recorder'ORAM/1/5/166

Article entitled 'Photo-Sensitive Relays'ORAM/1/5/167

Article entitled 'In Your Workshop'ORAM/1/5/168

'Graham's Circuits' cardboard slip with attached noteORAM/1/5/169

Invoice for repair of Daphne's SMS AKS synthesizerORAM/1/5/170

Excerpts from an article on tuning and harmonicsORAM/1/5/171

HMV Studios prices and additional leafletsORAM/1/5/172

Brenell Mark 5 Type M Series 3 Tape Recorder LeafletORAM/1/5/173

Article entitled 'the Hamograph' - A New Amplitude rhythm Control Device for the Production of Electronic MusicORAM/1/5/174

Leaflet about Dewtron Synthesiser ModulesORAM/1/5/175

Canford audio products listORAM/1/5/176

Circuit diagramORAM/1/5/177

Eaton audio synthesiser parts listingORAM/1/5/178

Figure detailing graphical fixing of electronic percussion soundORAM/1/5/179

Photocopied pages from 'Practical Electronics'ORAM/1/5/180

Leaflet and order form for Real-Time 1/3 Octave Analyzer from Bruel & KjaerORAM/1/5/181

Radio Constructors Data SheetsORAM/1/5/182

Jason AG10 Audio Generator information leafletORAM/1/5/183

Leaflets regarding Brenell productsORAM/1/5/184

Cutting from Wireless World, October 1955ORAM/1/5/185

Leaflet for Sutton Sound LimitedORAM/1/5/186

Amateur Tape Recording Magazine, Vol.1 No.1. April 1963ORAM/1/5/187

'Electronorama' page from 'Practical Electronics'ORAM/1/5/188

Brenell Mark 5 Type M Series 3 Tape Recorder Circuit DiagramORAM/1/5/189

Letter to Messrs. D.B. Oram from Radiospares LtdORAM/1/5/190

Receipt from 'Association Wholesale Supplies Ltd'ORAM/1/5/191

Price list for Precision Services Ltd hire facilityORAM/1/5/192

'The Music Synthesiser' article from Amateur Tape Recording & Hi-FiORAM/1/5/193

'Playing second fiddle... to a music machine' article from the Financial TimesORAM/1/5/194

Leaflet for Eaton Audio's 'PE Sound Synthesiser'ORAM/1/5/195

Daphne's papers regarding rebuild of Variable Speed Drive etc using Meccano in 1953ORAM/1/5/196

Brenell Mark 5 type M Series 3 Tape Recorder Circuit Diagram with brown containing envelopeORAM/1/5/197

Leaflet for IDE Hard Disc Upgrades for the Archimedes & A3000ORAM/1/5/198

R.A. Moog Co. Short Form Catalog - 1967ORAM/1/5/199

Daphne's Sectional graph paper pad, containing a number of notes, schematics and drawingsORAM/1/5/200

Oramics Ring binder, containing instructions on how to maintain and operate the Oramics machineORAM/1/5/201

Technical correspondence on Mini-Oramics for schoolsORAM/1/6

Computer CodeORAM/2

BBCORAM/3

Lectures, recorded music performances, work with schoolsORAM/4

Computer & Electronic Music AssociationsORAM/5

Published writing and drafts, performance programmes, press cuttings.ORAM/6

PhotographsORAM/7

Scores, scripts and workingsORAM/8

Personal effects, diaries and correspondenceORAM/9

BooksORAM/10

Sound recordingsORAM/11

Published sound and film recordings of Daphne OramORAM/12

Research and writings related to Daphne Oram.ORAM/13