A transistor package having input, reference (ground) and output terminals includes a ceramic base metallized to provide a ground plane and an isolated collector pad; and also includes a transistor die disposed on the pad. An equivalent output circuit of the transistor die describes an output impedance having a capacitive reactance. Pairs of wires are connected from the ground plane to the collector pad in series with DC blocking capacitors to provide an inductive reactance in parallel with the ...

The present invention provides a transistor circuit suited for a synchronizing signal separator. More particularly, the transistor circuit can separate the noise-free synchronizing signal from a composite video signal. The transistor circuit comprises a transistor having an emitter coupled to an input terminal through a capacitor and to a constant current source, a base applied with a bias voltage and a collector connected to an output terminal, a comparator comparing the emitter voltage with a ...

A lateral type multi-collector transistor which has a first collector region which subtends an angle .theta..sub.1 at the center of the emitter region and which has an effective plane distance W.sub.B1 from this center; and a second collector region which subtends an angle of .theta..sub.2 at the center of the emitter region and which has an effective plane distance W.sub.B2 from this center such that .theta..sub.1 <.theta..sub.2 and W.sub.Bl >W.sub.B2.

A latching transistor is described having both high current capacity and high turn-off gain. A selectively shorted anode emitter provides a four-layer structure capable of sustaining current flow only under those portions of a cathode emitter adjacent interdigitated gate fingers and particularly not in the center of the cathode emitter fingers or beneath contact areas. Additionally, a control region is provided for conveniently adjusting the amount of anode emitter shorting for optimizing turn-o...

A transistor amplifier having a first amplifier circuit with a first transistor having applied to its control electrode an input voltage. The ratio of the output voltage of the first transistor to the input voltage is approximately one. A second transistor circuit has a second transistor with its control electrode being directly supplied with the output voltage of the first transistor. The first and second transistors are bipolar transistors of the same type of conductivity with the respective b...

A superconducting transistor is formed by disposing three thin films of superconducting material in a planar parallel arrangement and insulating the films from each other by layers of insulating oxides to form two tunnel junctions. One junction is biased above twice the superconducting energy gap and the other is biased at less than twice the superconducting energy gap. Injection of quasiparticles into the center film by one junction provides a current gain in the second junction.

A transistor amplifier comprises an input stage circuit and an output stage circuit direct-coupled to the input stage circuit: the input stage including complimentary paired transistors having bases commonly connected to an input terminal and emitters AC-wise grounded and further connected to constant current sources, respectively; the output stage being a single-ended push-pull amplifier circuit including complimentary paired transistors having bases connected to collectors of the input stage t...

A semiconductor device which provides in an input circuit a substantially low reactance and a relatively high resistance within a range of operating frequencies to improve the impedance match between the device and an energy source. The device has a semiconductor die with at least a first and a second bonding terminal having capacitance and resistance between the bonding terminals. At least a first bond lead electrically connects the first bonding terminal to a first metallic contact area. Means...

A memory transistor in which a photovoltaic-ferroelectric element is conned between the gate and source of a field effect transistor. The element stores a remanent polarization in a direction corresponding to the polarity of a voltage to be applied to the transistor, and when the element is illuminated the voltage is generated and is applied. A restorable cross-coupled flip-flop in which memory information is stored in a pair of photovoltaic-ferroelectric elements. If power is lost, the elements...

A bipolar transistor includes an emitter zone having two regions of different doping levels. The more highly doped region is a surface-adjoining region located in the lower-doped region, extending only partially through the lower-doped region and laterally surrounding a central portion thereof. The transistor also includes a surface-adjoining base contact zone which surrounds the emitter zone and is laterally spaced apart from the more highly-doped region of the emitter zone. Additionally, a sur...