![](https://coimages.sciencemuseumgroup.org.uk/30/621/medium_thumbnail_1986_0965.jpg)
Discriminator used by Geoffrey Perry
- Made:
- 1960-1984
![Discriminator](https://coimages.sciencemuseumgroup.org.uk/308/906/small_thumbnail_smg00028175.jpg)
![Discriminator](https://coimages.sciencemuseumgroup.org.uk/286/605/small_thumbnail_2017_0142__0003_.jpg)
![Discriminator](https://coimages.sciencemuseumgroup.org.uk/286/604/small_thumbnail_2017_0142__0001_.jpg)
![Discriminator](https://coimages.sciencemuseumgroup.org.uk/286/627/small_thumbnail_2017_0142__0002_.jpg)
Discriminator, a circuit or device which only produces an output when the input exceeds a fixed value. Geoffrey Perry archive relating to the operation of the Kettering Group. Extent: c.60 boxes. Date: c.1960–1984.