Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Driver circuit for developing quiescent and dynamic operating signals for complementary transistors










Image Number 2 for United States Patent #4041407.

The driver circuit includes a differential amplifier, a double-to-single ended converter, an emitter follower amplifier and an output stage having one portion for driving one external complementary transistor and another portion for driving another complementary transistor. The driver output transistors of each portion of the output stage each has a biasing network including a semiconductor junction and a resistor which are driven by a constant current source. The bias networks enable the driver output transistors to provide quiescent currents of known magnitudes for biasing the complementary output transistors and to have high current gains so that the current source is able to supply a constant current of minimal magnitude. The biasing networks further provide temperature compensation of the driver output transistors. The driver output stage is suitable for being driven by a single ended drive signal.








 
 
  Recently Added Patents
Asynchronous line interface rate adaptation to the physical layer with synchronous lines at the connection layer
Rear bumper for an automobile
Aggregating completion messages in a sideband interface
Lower set insert with a lower ball seat for a downhole plug
Hand-held optical probe based imaging system with 3D tracking facilities
Externally gapped line arrester
Methods and systems for assessing sales activity of a merchant
  Randomly Featured Patents
Floating dock/marina system
Expandable stents and method for making same
Apparatus for aiding water removal of a paper web by independently controlling the steam flow in a plurality of compartments
Blank for a tape cassette carton
Low profile optocouplers
Bathing appliance for handicapped persons
Sewing machine needle cooler
.alpha.-olefin polymerization catalysts
Electrical safety devices and systems for use with electrical wiring, and methods for using same
Chair with storable ottoman