Meter and amplifier circuit for measuring AC and DC signals

Details Meter and amplifier circuit for measuring AC and DC signals Meter and amplifier circuit for measuring AC and DC signals

1975-09-08

1977-05-17

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With amplifier or space discharge device

324119, 330 13, G01R 130, G01R 1922

Patent

active

040244717

ABSTRACT:
The bases of a first pair of opposite conductivity transistors are connected to one input terminal of the amplifier circuit. A conventional meter is connected in the collector-emitter path of a second pair of transistors. Four arrangements are disclosed for coupling the first pair of transistors to the second pair; two of the embodiments enable DC signals to be measured and the other two AC signals.

REFERENCES:
patent: 2955257 (1960-10-01), Lindsay
patent: 3319175 (1967-05-01), Dryden
Sensitive DC-VTVM Type MV-27C; Millivac Inst. Corp., Schenectady, N.Y., Nov. 8, 1956.

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