Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 330/70
Name: Amplifiers > Anode energized through discharge path of controlled vacuum tube
Description: Subject matter including at least two amplifying devices of the vacuum tube type, each having at least three electrodes including a control grid electrode, wherein at least a portion of the anode-cathode power supply current, for one of the amplifying devices, flows in series from the power supply source through the space discharge path of the other amplifying device, so that the tubes are series energized (at least in part) from the power supply.










Sub-classes under this class:

Class Number Class Name Patents
330/71 Plural discharge paths traversed by anode supply 4
330/73 Plural outputs 2
330/74 Separate signal inputs to series devices 0


Patents under this class:

Patent Number Title Of Patent Date Issued
8542848 Musical instrument preamplifier Sep. 24, 2013
7053710 Vacuum tube amplifier having grid as output and plate as input May. 30, 2006
5880632 Tube amplifier having special configuration with two or more tubes Mar. 9, 1999
5680074 Tube amplifier having specific configuration with four tubes Oct. 21, 1997
5030921 Cascaded cold cathode field emission devices Jul. 9, 1991
4163198 Audio amplifier Jul. 31, 1979
3999139 Monolithic alternately stacked IF amplifier Dec. 21, 1976











 
 
  Recently Added Patents
Illumination apparatus
Antenna array system
Converter and measuring apparatus
Magnetic recording medium, information storage device, and method of manufacturing magnetic recording medium
Configurable pitch reducing optical fiber array
Systems and methods for updating a data store using a transaction store
Monitoring device for monitoring a display device
  Randomly Featured Patents
Shiitake mushroom plant named `Hokken 601`
Method and apparatus for monotonic algorithmic digital-to-analog and analog-to-digital conversion
Self-healing thermocouple
Telephone ring detector circuit
Process for manufacturing a superconducting wire of compound oxide-type ceramics
Flame-type atomic absorption spectrophotometer
Passive cardiac restraint systems having multiple layers of inflatable elements
Tuning fork type quartz resonator
Azeotropic distillation process for separating acetic acid, methylacetate and water in the production of an aromatic carboxylic acid
Hand operated crimping tool