A friend of mine pointed me to this video on testing a 1930's desing of regulated DC power supply and I thought of @Lucien Nunes and the other folks here immediately! So if you have a spare 20 min you might find it interesting:
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Discuss Thyratron power supply in the UK Electrical Forum area at ElectriciansForums.net
Nice simple design, and great to see it still working.
Nice. Before thyristors there were thyratrons - voltage controlled diodes:
Thyratron : Circuit Diagram, Working Principle and Its Applications - https://www.elprocus.com/thyratron-working-and-its-applications/
![[ElectriciansForums.net] Thyratron power supply](https://www.electriciansforums.net/attachments/1650437854805-png.96892/ "[ElectriciansForums.net] Thyratron power supply")
Thyratron : Circuit Diagram, Working Principle and Its Applications - https://www.elprocus.com/thyratron-working-and-its-applications/
Radar Modulator - Radartutorial - https://www.radartutorial.eu/08.transmitters/Radar%20Modulator.en.html
In my earlier life a thyratron would be found in a radar modulator to provide a high voltage pulse of fixed duration - determined by the inductor/capacitor pulse forming network - to a magnetron which in turn produced high power pulse of microwave energy. If I remember correctly one E/F radar charged the pulse forming network to 8kV.
This was not the highest voltage. Inside a D band radar set the PFN operated at 35kV which pulsed a klystron - but technology had moved on and it used thyristors in a sealed tank of oil to do the switching.
In my earlier life a thyratron would be found in a radar modulator to provide a high voltage pulse of fixed duration - determined by the inductor/capacitor pulse forming network - to a magnetron which in turn produced high power pulse of microwave energy. If I remember correctly one E/F radar charged the pulse forming network to 8kV.
This was not the highest voltage. Inside a D band radar set the PFN operated at 35kV which pulsed a klystron - but technology had moved on and it used thyristors in a sealed tank of oil to do the switching.
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We have two devices that use thyratrons, a lighting dimmer with five pairs and a spot-welder.
However my favourite gasfilled, grid controlled device is not a thytratron. It's polyphase, heaterless and bulbous:
![[ElectriciansForums.net] Thyratron power supply](https://www.electriciansforums.net/attachments/amyarmsfrontlit-jpg.96903/ "[ElectriciansForums.net] Thyratron power supply")
However my favourite gasfilled, grid controlled device is not a thytratron. It's polyphase, heaterless and bulbous:
Good to see/read Lucien's contributions again which I hope indicates his long treatment is working. No need to respond.
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