28-10-2016, 02:46 PM
Hi Brian,
The Cossor made CRT has electrostatic deflection. That black block close to the base is made from a rubber material. I have to say the method of securing the CRT neck is not very nice, that's something I'll address very soon. The set has been in my possession since 1998. I bought it from the late Gerry Welles.
The EHT supply is similar to the Argus TV, that is "upside down" and being negative sozusagen. This method can have many advantages over a positive supply. Mainly the final anode and deflector plates are at near ground potential but does mean that the cathode and control grid of the CRT are negative EHT potential. Other pre-war TV receivers which have a negative EHT system are the Murphy A42V and early RGD models.
Geordie McBoyne.
The Cossor made CRT has electrostatic deflection. That black block close to the base is made from a rubber material. I have to say the method of securing the CRT neck is not very nice, that's something I'll address very soon. The set has been in my possession since 1998. I bought it from the late Gerry Welles.
The EHT supply is similar to the Argus TV, that is "upside down" and being negative sozusagen. This method can have many advantages over a positive supply. Mainly the final anode and deflector plates are at near ground potential but does mean that the cathode and control grid of the CRT are negative EHT potential. Other pre-war TV receivers which have a negative EHT system are the Murphy A42V and early RGD models.
Geordie McBoyne.
