Loewe 3NF
Encyclopedia
The Loewe 3NF was an early attempt to combine several functions in one electronic
device.
Produced by the German Loewe AG
company as far back as 1926, the device consisted of 3 triode valves (tubes) in a single glass envelope together with all the fixed capacitors and resistors required to make a complete radio receiver. The resistors and capacitors had to be sealed in their own glass tubes to prevent them from contaminating the vacuum.
The only other parts required to build a Radio
receiver were the HT and LT (A and B) batteries; the tuning coil; the tuning capacitor and the loudspeaker. The device was produced not to enter the Integrated circuit
era several decades early, but to evade German taxes levied on a per valveholder basis. As the Loewe set had only one valveholder, it was able to substantially undercut the competition.
One major disadvantage of the 3NF was that if one filament failed, the whole device was rendered useless. Loewe countered this by offering a filament repair service.
Loewe were to also offer the 2NF (two tetrodes plus passive components) and the WG38 (two pentodes, a triode and the passive components).
Electronics
Electronics is the branch of science, engineering and technology that deals with electrical circuits involving active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies...
device.
Produced by the German Loewe AG
Loewe AG
Loewe AG is the parent company of the German Loewe group. The Loewe group develops, manufactures and sells a wide variety of electronic, electrical and mechanical products and systems, and specialises in the field of consumer and communication technology. The company was founded in Berlin in 1923...
company as far back as 1926, the device consisted of 3 triode valves (tubes) in a single glass envelope together with all the fixed capacitors and resistors required to make a complete radio receiver. The resistors and capacitors had to be sealed in their own glass tubes to prevent them from contaminating the vacuum.
The only other parts required to build a Radio
Radio
Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space...
receiver were the HT and LT (A and B) batteries; the tuning coil; the tuning capacitor and the loudspeaker. The device was produced not to enter the Integrated circuit
Integrated circuit
An integrated circuit or monolithic integrated circuit is an electronic circuit manufactured by the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material...
era several decades early, but to evade German taxes levied on a per valveholder basis. As the Loewe set had only one valveholder, it was able to substantially undercut the competition.
One major disadvantage of the 3NF was that if one filament failed, the whole device was rendered useless. Loewe countered this by offering a filament repair service.
Loewe were to also offer the 2NF (two tetrodes plus passive components) and the WG38 (two pentodes, a triode and the passive components).