▼ Menu

    
Extras ▼

The 70B1 is a miniature voltage stabiliser tube that Mullard introduced in 1950. The stabilised voltage is 70 V and the current range is 5-15 mA. The given AC resistance is 300 Ω.

Looking closely at the base one can see a central tube entering the cylindrical anode.

The thin glass tube envelope is 9 mm in diameter and, excluding the wire leads is 51 mm tall.

Reference: Advert. Type 70B1 was first introduced in 1950. See also 1950 adverts.