Micronta 22-204A User Manual

Micronta 22-204A range doubler multimeter instructions,manual, circ... file:///C:/Documents%20and%20Settings/Owner/My%20Documents/aj...
1 of 7 02/05/2010 16:45
MICRONTA 22-204A instrucation manual. Supplied by Radio Shack, manufactured for Tandy
corporation
50000 Ohms/Volt Multitester with range doubler. Circuit diagram at the bottom of this document.
The Sears 82373 multitester and the Archerkit 28-4014 are reported to be the same thing under a different
name.

Micronta 22-204A Specifications

General

Brand	Micronta
Model	22-204A
Category	Multimeter
Language	English

Summary

Micronta 22-204A Multitester Introduction

Product Overview and Identification

Description of the Micronta 22-204A, its manufacturer, and related models.

Multitester Features and Specifications

Key Features and Design Elements

Highlights include high sensitivity, range doubling, mirrored scale, and color coding.

Detailed Technical Specifications

Covers ranges, accuracy, sensitivity, meter movement, batteries, and leads.

Performance and Usage Guidelines

Measured Sensitivity Performance

Presents resistance values measured for various ranges and modes on the multimeter.

Operational Best Practices

Guidance on zero adjustment, parallax, battery checks, and reading scales.

Measurement Procedures - Part 1

DC Voltage Measurement Steps

Instructions for connecting probes, setting ranges, and reading DC voltages accurately.

AC Voltage Measurement Steps

Instructions for connecting probes, setting ranges, and reading AC voltages accurately.

Resistance Measurement Preparation

Steps to prepare the multimeter and circuit before measuring resistance.

Measurement Procedures - Part 2

Resistance Measurement Execution

Guidance on zeroing, reading resistance values, and battery considerations.

DC Current Measurement Steps

Procedure for measuring DC current, including circuit connection and range selection.

Decibel Measurement Usage

Explanation of the dB scale and its application for relative power measurements.

Circuit Diagram and Components

Micronta 22-204A Schematic Diagram

The complete circuit diagram for the Micronta 22-204A multimeter.

Key Component Notes

Details on specific diodes and the rotary range switch.