03-10-2023, 04:05 PM
Hi all,
Thank you very much for all the information.
I think I am going to first trace the circuit so I can see exactly how the barretters were connected, that may give me an idea as to what rating they may have been then I can stick a roughly appropriate filament lamp in. The small lamp is probably just an off / on indicator so may not be an issue.
Normally a barretter is used in a radio to protect the valve heater filaments. As there were two barretters in this set up I am thinking they were most likely there to limit the charging current and protect the Rectifier valve itself and would be switched in or out depending on the charging circuit employed.
Its odd how the Internet has so much information about pretty much everything, and yet there are still plenty of things such as this and a few other bit of kit I have where they are almost absent from the web!
PPPPenguin - Yes I am in south Lincolnshire, about a 1 1/2 hour drive from Hemswell Cliff. The museum looks very interesting, I am currently perusing the pages, The P5 1952 Bedford is particularly nice.
Thank you very much for all the information.
I think I am going to first trace the circuit so I can see exactly how the barretters were connected, that may give me an idea as to what rating they may have been then I can stick a roughly appropriate filament lamp in. The small lamp is probably just an off / on indicator so may not be an issue.
Normally a barretter is used in a radio to protect the valve heater filaments. As there were two barretters in this set up I am thinking they were most likely there to limit the charging current and protect the Rectifier valve itself and would be switched in or out depending on the charging circuit employed.
Its odd how the Internet has so much information about pretty much everything, and yet there are still plenty of things such as this and a few other bit of kit I have where they are almost absent from the web!
PPPPenguin - Yes I am in south Lincolnshire, about a 1 1/2 hour drive from Hemswell Cliff. The museum looks very interesting, I am currently perusing the pages, The P5 1952 Bedford is particularly nice.
