Resources Contact Us Home
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
Image reproduction system and image reproduction processing program
Encoding digital content based on models for predicting similarity between exemplars
Weak acid recovery system for ethanol separation processes
Autonomous primary-mirror synchronized reset
Magnetoresistive element and manufacturing method of the same
Optical module for a microlithography objective including holding and supporting devices
Selecting a converter operating mode of a PA envelope power supply
  Randomly Featured Patents
Key attachment device for key case
Composites with integrated multi-functional circuits
Method for forming a fine pattern of a semiconductor device
Means and method for controlling the intensity distribution of a laser beam
Coupled multiband antenna
Mobile radio network
Plaster dispensing apparatus for wallboard structures
Bed headboard
Expression of sucrose phosphorylase in plants
Boat shoe