THE GREAT MULLARD MAGIC BLOG
NEW FOR 1953 A LOW HUM LOW-MICROPHONY PENTODE -...
The EF86 audio frequency pentode had been designed for use in high grade resistance coupled AF voltage amplification circuits. - yes, this pentode was NOT designed as a TV valve...
NEW FOR 1953 A LOW HUM LOW-MICROPHONY PENTODE -...
The EF86 audio frequency pentode had been designed for use in high grade resistance coupled AF voltage amplification circuits. - yes, this pentode was NOT designed as a TV valve...