Single-transistor two resistor circuit which translate test...

Details Single-transistor two resistor circuit which translate test... Single-transistor two resistor circuit which translate test...

2005-11-29

2005-11-29

Tang, Minh N. (Department: 2829)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S1540PB

Reexamination Certificate

active

06970009

ABSTRACT:
A signal translator circuit, for use in sending test signals to an IC-chip in a chip testing system, includes first and second resistors, and a single transistor. The transistor has a current channel which is coupled in series with the first resistor between a source voltage terminal and an output terminal. The single transistor also has a control lead, for enabling and disabling the flow of current through the current channel, which receives an input test signal at voltage levels that are to be translated. The output terminal is coupled through the second resistor to a reference voltage terminal. The output terminal is also coupled to an input terminal of a socket which is structured to hold the IC-chip.

REFERENCES:
patent: 6147549 (2000-11-01), Ohno
patent: 6373260 (2002-04-01), Weller et al.

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