US 7,482,867 B2
	Single stage balanced voltage amplifier
Chi Ming John Lam, Flat B, 7/F, Tower 3, Vista Paradiso, Ma On Shan, Shatin, New Territories (Hong Kong Special Administrative Region of the People's Republic of China, The)
Filed on May 15, 2007, as Appl. No. 11/748,508.
Claims priority of application No. 0611662.8 (GB), filed on Jun. 13, 2006.
Prior Publication US 2007/0296492 A1, Dec. 27, 2007
Int. Cl. H03F 3/45 (2006.01)

U.S. Cl. 330—69  [330/252]

14 Claims

1. A single stage balanced voltage amplifier containing at least a first, a second and a third pair of vacuum tube triodes for amplifying two input signals and generating two output signals, wherein outputs of said first pair of triodes taken from the plates are fed to the cathodes of said second pair of triodes, further including a plurality of resistors to set up a pre-determined DC biasing voltage at the grid of said second pair of triodes, and wherein bypass capacitors are connected from the grid of said second pair of triodes to ground.