Kenwood VT-181 Analog multimeter
Manufacturer:
Model:
VT-181
Date:
1988
Category:
Group:
Description:
AC Voltmeter

Information

General A Signal voltage to be measured, which is input from the INPUT connector, is passed through the First Attenuator and is converted to a low impedance by the Impedance Converter. The impedance-converted signal is normalized, or further attenuated in proportion to 1mVrms fullscale value through the Second and Third Attenuator. The normalized signal is magnified 20-fold by the Main Amplifier and is fed to the Output Amplifier and the Absolute-Mean Value Detector. The Output Amplifier magnifies the signal 50-fold and feeds to the OUTPUT connector. The Absolute-Mean Value Detector converts the signal from the Main Amplifier to DC current in proportion to the absolute mean value. The converted signal activates the Meter. The Attenuator Control encodes the signal led from the RANGE selector to generate an Attenuator Control signal. This signal controls the First, Second and Third attenuator to set the sensitivity corresponding to each range. The Power supply feeds to the functional circuit ±5V DC voltages stabilized by its IC regulator.

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Service Manual
Manual type:
Service Manual
Pages:
22
Size:
1.30 Mbytes (1361391 Bytes)
Language:
english
Revision:
Manual ID:
B51-1132-00
Date:
01 April 1988
Quality:
Electronic document, no scan, very well readable.
Upload date:
20 May 2018
MD5:
b013159dadc5e48cb14784a1eda34900
Downloads:
436

Information

SPECIFICATIONS ... 3 SAFETY ... 4 CIRCUIT DESCRIPTION ... 5 BLOCK DIAGRAM ... 6 ADJUSTMENT ... 7 PARTS LIST ... 9 PARTS LIST (ELECTRICAL) ... 10 SCHEMATIC DIAGRAM ... 15 P.C. BOARD ... 21

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