Battery Eliminator 90V/1.4V converts
Vintage battery Radio sets to 230V, £30

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Battery Eliminator

Fits into the space of original B126 90V battery

The Battery Eliminator, is designed to replace the now long unobtainable 90V HT battery AND the 1.5V LT battery that were used in many valve portable sets of the 1950's and early 60s. It will fit into the space for, and indeed the casing of, an EverReady B126 90V battery. The eliminator provides 90V supply and a regulated LT supply for the filaments. You can order the LT voltage from 1 to 7V as required, normally I would build to 1.4V. E-mail me your requirements. The HT voltage is unregulated (but smoothed) the actual voltage is not very critical as battery sets were designed to cope with a reducing HT voltage during the life of the battery but will be around 90V at a typical 10mA load and around 100V unloaded. The 230V mains input, HT and LT connection are all made using screw terminals, so no soldering is required. The eliminator provides full isolation from the mains input, and will allow the set to pass PAT tests. Be aware that mains voltage is present at a few points on the PCB underside, so care should be taken when mounting, using stand off bushes on the mounting screws or making other provision for the board's underside to be insulated from the set's case or chassis (not usually a problem with a wooden case!). There is no mains voltage accessible from the component side apart from the connector screw terminals. The PCB dimensions are 92mm x 64mm x 37mm high, by comparison, a B126 battery is 2.5 x 4 x 2" (102 x 64 x 51 mm). The transformer is rated at 5VA with 200mA max draw from the LT supply, the HT side will provide adequate current ~15mA for a portable battery set. The weight of the unit is 250g. The LT and HT supplies are isolated from each other. I usually wire these up with an inline switch (table lamp switch) in the mains cable (not supplied) so no alteration is required to the set for a mains on/off switch, suitable made up cables can be rescued from table lamps as found in charity shops etc. for around £2. Postage is £2.95 to the UK, See table above for international rates, although be aware that only 230VAC models are currently available!

Battery Eliminator 1

92 x 64mm fits into the space of original B126 90V battery

Battery Eliminator 3
Battery Eliminator 4
Battery Eliminator 5
Battery Eliminator 6
Battery Eliminator Fitted to a PYE P144BQ portable battery set

Fitted to a PYE P144BQ portable battery set

EverReady B126 Battery

EverReady B126 90V HT Battery

EverReady AD35 Battery

EverReady AD35 1.5V Filament Battery