24-06-2022, 07:29 PM
Odd it doesn't seem to mention, unless I missed it, that Magnetrons are used in microwave ovens and all the electronics could be replaced with clockwork. Also TWTs were used in Satellites inc Satellite TV.
It says Klystrons are more powerful than Magnetrons, but historically Klystrons were lower power. A Magnetron inherently pulses which is fine for Radar and doesn't matter for an oven (in an oven the power setting doesn't change the power at all, just varies on and off time). A Klystron is usually a continuous wave device, as is the TWT. BBC terrestrial microwave links still used TWTs in the 1970s. The modest output power is as important as the gain, feeding the dish via a waveguide and small horn.
Lots of people won't have heard of decatrons or nuvistors or the more specialised CRTs. Apart from the Condenser Microphone amp the list seemed to concentrate purely on high power military & medical applications.
It says Klystrons are more powerful than Magnetrons, but historically Klystrons were lower power. A Magnetron inherently pulses which is fine for Radar and doesn't matter for an oven (in an oven the power setting doesn't change the power at all, just varies on and off time). A Klystron is usually a continuous wave device, as is the TWT. BBC terrestrial microwave links still used TWTs in the 1970s. The modest output power is as important as the gain, feeding the dish via a waveguide and small horn.
Lots of people won't have heard of decatrons or nuvistors or the more specialised CRTs. Apart from the Condenser Microphone amp the list seemed to concentrate purely on high power military & medical applications.
