Jean Herman (4)

| In November 1968, the Belgian company MBLE (Manufacture Belge de Lampes et de Mmatériel Electronique) published an article in its “Special n...

| The instrument described here lets you check that zener diodes up to 200 V are working correctly, and it lets you find out the reverse break...

| The klystron was invented, and a first prototype constructed, by the brothers Sigurd and Russel Varian working at Stanford University (CA) i...

| Dekatron valves were developed in the 50s and lasted right up to the end of 1970. They were used as up/down decade counters in applications...