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diode

circa 1950

Point contact germanium triode type EW51

circa 1950

diode

circa 1950

Germanium Junction Diode type EW ??

circa 1950

Medium power silicon junction diode

circa 1950

Silicon wafer

1995

Thyristor type SOT223

1995

Thyristor type SOT78

1995

Diode type SOD59

1995

Silicon wafer

1995

Diode type SOD84

1995

Silicon wafer

1995

Silicon wafer

1995

Thyristor type SOT82

1995

Thyristor type SOT186A

1995

Thyristor type SOT186

1995

sample display

circa 1960

Medium power germanium junction diode type EW54

circa 1950

circuit element

circa 1950

diode

circa 1950

diode

circa 1950

diode

circa 1960

mounting

circa 1950

Germanium crystal GEX44

circa 1950

MIC transmission lines

circa 1950

crystal valve type GEX54

circa 1950

Silicon junction diode type SX640

circa 1950

Germanium point contact diodes type GEX34 and GEX54

circa 1950

Thyristor type SOT93

1995

Thyristor type SOT263

1995

Thyristor type SOT263

1995

Thyristor type SOT404

1995

Thyristor type SOT54

1995

Thyristor type SOT119

1995

Thyristor type SOT399

1995

Silicon wafer

1995

Two cathode ray tubes

circa 1950
Semi-conductor rectifier, type CV7017, MoD Spec, in box.

Semi-Conductor Rectifier

three pieces - X-band MIC balanced mixers 1966

balanced mixers

1966
38 pieces - assortment of small circuits - various MIC examples. C.1950

circuits

circa 1950
Wave guide microwave mixer diode mount marked ASH 4. c.1950

mixer diode mount

circa 1950
Microwave delay line. non working example of 3.5 Ghz delay line. c.1950

delay line

circa 1950
Three demonstration glass indicators excitable by tesla coil. c.1950.

indicator

circa 1950
Two units - S-band switch. c.1950

switch

circa 1950
First example of branch arm coupler on glazed ceramic (SYNTOX) together with four later examples on saphire. 1965/66

branch arm coupler

1965/66
Three units, first X-band balanced mixer, second production example of X-band mixer, third S-band balanced mixer. c .1950

balanced mixers

circa 1950
Two unmarked packs of 5 pre-production Germanium Junction Diode semi-conductors, c.1950

Germanium Junction Diode

circa 1950
Q-band image-suppression down-converter unit test jig for MIC. c.1950

down converter unit

circa 1950
Two experimental composite housings for circular branch -ARM coupler as used in J-band balanced mixers. c.1970

composite housing

circa 1970
two pieces known as SHRIMP - 17GHz front end feature beam-lead gallium arsenide (GaAs) Shottky diodes. fisrt fabricated from six substrates, second fabricated as single MIC type VX4518 c1950

Shottky diodes (SHRIMP)

circa 1972