Half-Wave Vacuum Rectifier
The Ef80 Vacuum tube is used for Radio and TV reception.
It was developed in December 1954. The EF184 successor Tube was
developed in 1960.
Predecessor Tube .......UY41
Electrical Data:
Vf ............38 Volts
If ........... 0.1 Ampere
Preferred Substitutes .....38A3, U381