SAMPLING CIRCUIT FOR ANALOG CURRENT SIGNAL

Title:

SAMPLING CIRCUIT FOR ANALOG CURRENT SIGNAL

Document Type and Number:

Japanese Patent JPS6048501

Kind Code:

A

Abstract:

PURPOSE:To simplify the circuit constitution of a sampling circuit and to reduce the cost by forming a short circuit between a current signal source and a current/voltage converter, and providing a current signal selecting function. CONSTITUTION:The current signal source 1 is connected to an A/D converter 3 through the current/voltage converter 2. The short circuit 4 for short-circuiting (grounding) the output signal of the current signal source 1 and a signal passing circuit 9 are provided between the current signal source 1 and current/voltage converter 2. Those circuits 4 and 9 are composed of transistors (TR) 5 and 10, etc., and the current signal source 1 is short-circuited or connected by make/ break control over a relay contact 7 and voltage impression to base terminals b1 and b2. Reciprocal signals are inputted to the base terminals b1 and b2 to exhibit an optional circuit function.

Inventors:

MATSUDA SHIYOUJI

Application Number:

JP15481783A

Publication Date:

March 16, 1985

Filing Date:

August 26, 1983

Export Citation:

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