VACUUM TUBE AMPLIFIERS USE

Brand Owner (click to sort) Address Description
CLEAN MACHINE Fuchs Audio Technology Limited Liability Company 73 Collins Avenue Bloomfield NJ 07003 Vacuum tube amplifiers for use with stringed musical instruments;In the statement, line 1, ,LLC should be deleted, and LIMITED LIABILITY COMPANY should be inserted.;MACHINE;
THUNDERBOLT Zinky Electronics P.O. BOX 3973 FLAGSTAFF AZ 86003 vacuum tube amplifiers for use with stringed musical instruments;THUNDER;
THUNDERBOLT Zinky Electronics P.O. BOX 3973 FLAGSTAFF AZ 86003 vacuum tube amplifiers for use with stringed musical instruments;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A power supply for a guitar amplifier and the guitar amplifier and method of operating the guitar amplifier. The power supply includes an alternating current power input having a secondary winding and a filament winding, an output and a first vacuum tube rectifier coupled between the secondary winding of the power input and the output for rectifying the alternating current at the power input. At least a second rectifier is provided which is selectively couplable in parallel with the first vacuum tube rectifier. The at least one second rectifier can be a vacuum tube rectifier with each of the first and second rectifiers having a cathode continually energized by the filament winding, a solid state rectifier or both. The output amplifier has an output transformer having a primary winding with a center tap and with a first pair of vacuum tube amplifiers having their cathodes being coupled together and their plates coupled to the primary winding on opposite sides of the center tap. At least a second pair of vacuum tube amplifiers is provided having their cathodes coupled together and their plates being coupled to the primary winding on opposite sides of the center tap. A selector switch selectively causes at least one pair of the first pair of vacuum tube amplifiers and the at least a second pair of vacuum tube amplifiers to be operational and concurrently causes at least a selected one of the first vacuum tube rectifier and the at least a second rectifier to be operational corresponding to the selected at least one pair of vacuum tube amplifiers and the at least a second pair of vacuum tube amplifiers selected.