Wireless Set 18, 48 or 68 static battery

[wendel daniel]

Hello
This is a static battery used with the Wireless Set 18, 68 or 48.
This battery can also be used on vehicules monting with this wireless set.
kind regards
daniel from france

[Chris Suslowicz]

The Static Battery Box for the WS18 provides HT (144 volts), Grid Bias (-12 volts) and LT (3 volts) as follows:

HT + Grid Bias = 156 volts with a tap at 12V, from 2 x 60 volt batteries (120V) + 24 volts from two of the "8-cell refill" batteries, totalling 144 volts, and a third "8-cell refill" battery to provide Grid Bias.

The filament (LT) supply was provided by two "O" cells (which may have been either a single large cell or a cardboard case with several cells connected in parallel).

The static battery was considerably higher capacity than the 'battle battery' and the HT section would have lower resistance so that the 6-volt difference would not be a problem.

There was a US manufactured equivalent for the WS48 that is almost identical except that the cells/batteries listed for filling it are American types.

Your second "static battery box" is actually the HT battery for Wireless Set No.1, and is filled with 20 of the "8-cell refill" batteries to provide 240 volts HT.

The "8-cell refill" consists of 8 approximately AA-sized cells in series, with a negative lead and two brass terminals for +6 and +12 volts. They were used in various remote control units to provide relay power, and were still in production in the 1970s or later.

Chris.

[wendel daniel]

Thanks for all this informations.
So if i have understand, the only difference of the WS N°1 set static battery i have and the WS18 set static battery is the marking on the lid.
I look inside, and it was the same you can see on the FIG 6 coming from the WS 18 operating instruction.
regards
daniel

[wendel daniel]

This label was sticking inside the WS 18 set static battery lid.

[Chris Suslowicz]

Originally Posted by wendel daniel

This label was sticking inside the WS 18 set static battery lid.

Ah... my mistake.

The W.S. No.1 used a 228 volt HT battery, consisting of 20 8-cell refill batteries (one was a spare) and one and a half of the batteries were used to provide -18 volts for grid bias.

The 240 volt battery was for the W.S. No.11, used a 2-pin connector, and was filled with four of the 60 volt HT batteries.

The WS18 (etc.) Static Battery Box (providing HT, Grid Bias and LT) needed a 5-pin connector and they used a British 5-pin valve socket for the connector.
(It was later fitted with a metal collar to prevent the plug being forced in with the wrong alignment, and damaging the set.)

Regards,

Chris.

[Chris Suslowicz]

p.s. I think your battery box is a WS18 (or WS48) box with the wrong lid (for the WS11) fitted.

Chris.