A pair of early T.C.C. bakelite-housed capacitorsA job lot bought recently
A pair of early T.C.C. bakelite-housed capacitors
These are 2uF and 1uF, 200vw probably designed for battery operated sets having an HT supply of around no more than 150 volts
The manufacturer was the Telegraph Condenser Company
but "TCC" sufficed as they were so well known
An early
rectifier in what is known as a balloon-shaped glass envelope
The anodes are matt black to assist in cooling
4 volt 2Amp filament, 120 mA HT current and rated at 500-0-500V RMS
Another early
rectifier both of a variety used in early mains powered radios
This has bright metal anodes containing a lot of metal and pre-date the blackening process of the type shown above
4 volt 1.25Amp filament, 60mA HT current and rated at 250-0-250V RMS
Other manufacturers made similarly coded valves and improved their ratings to get an edge on sales
A set of
3 very old resistorsThey're sealed in glass tubes presumably to give stability to the early resistive material
A set of
3 coilsThese are Wearite types, carefully matched for three stages of a TRF or "straight" receiver
The cans are solid copper and the coils plug into standard B4 valve sockets
Below (left) is a view of one of the coils showing the matching copper baseplate
It was vital for a stable receiver that there was no unwanted coupling between the amplifying stages, hence the copper screening cans.
This coil is unscreened and could have been used
in the RF stage of a small valve receiver.
The coil would have been mounted horizontally, as shown, on its two posts
John Gibson dropped me a line to say it's the LW/MW tuning coil from a 1932 Ultra Blue Fox radio which is a 2 valve plus rectifier set with a AC2/HL grid leak triode detector utilising reaction, transformer coupled to a AC/Pen output pentode.
of the type used for reaction.This was the name given to the application of positive feedback to improve the gain of a receiver
An old electrolytic capacitorManufactured by TCC this is rated at 500uF, 50 Volt working
The case measures130 mm x 51mm x 51mm
The label is on the rear and will give a clue to the age.
Any experts on electrolytic condensers out there?
Yet more old components!
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