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Micronta 22-204A Instruction Manual
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Micronta 22-204A Instruction Manual

50 000 ohms/voltmultitester with range doubler
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Micronta 22-204A range doubler multimeter instructions, manual, circ... file:///C:/Documents%20and%20Settings/Owner/My%20Documents/aj...
MICRONTA 22-204A
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.
1 of 7
instrucation manual. Supplied by Radio Shack, manufactured for Tandy
02/05/2010 16:45

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Summary of Contents for Micronta 22-204A

  • Page 1 Micronta 22-204A range doubler multimeter instructions, manual, circ... file:///C:/Documents%20and%20Settings/Owner/My%20Documents/aj... 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.

  • Page 2: Specifications

    Micronta 22-204A range doubler multimeter instructions, manual, circ... file:///C:/Documents%20and%20Settings/Owner/My%20Documents/aj... This high-sensitivity MICRONTA Multitester is designed to measure AC and DC voltages, DC current and Resistance with accuracy and ease. The large, single-knob Range/Function control is easy to use and read. The Range Doubler switch (V.A/2 —V. .A) effectively doubles the number of AC and DC scales available.
  • Page 3 DO NOT PUT THE PROBES ACROSS A VOLTAGE SOURCE WITH THE METER SET TO CURRENT OR OHMS. Unlike most modern meters, the 22-204A does not have any internal fuses, you will burn resistors inside the meter if you put is across a power supply with it set to read current or resistance.

  • Page 4: Dc Voltage Measurements

    Micronta 22-204A range doubler multimeter instructions, manual, circ... file:///C:/Documents%20and%20Settings/Owner/My%20Documents/aj... If the pointer does not normally rest exactly over "0" at the left side of the scale, adjust the plastic screw in the lower center of the meter face to bring the needle to "0".

  • Page 5: Dc Current Measurements

    Micronta 22-204A range doubler multimeter instructions, manual, circ... file:///C:/Documents%20and%20Settings/Owner/My%20Documents/aj... 2. Leave the Range Doubler switch in the V- -A position. Set Range switch to one of the positions; touch the test probes together and adjust the OHMS ADJ. control to bring the pointer to the "0" on the top (green) OHMS scale.
  • Page 6 Micronta 22-204A range doubler multimeter instructions, manual, circ... file:///C:/Documents%20and%20Settings/Owner/My%20Documents/aj... Micronta 22-204A schematic Micronta 22-204A circuit diagram The wiper of the big rotary range switch shorts together all three contact areas. D1 is a glass germanium diode, similar to OA91. D2 is similar to 1n4148, Component V is my meter is...
  • Page 7 Micronta 22-204A range doubler multimeter instructions, manual, circ... file:///C:/Documents%20and%20Settings/Owner/My%20Documents/aj... 7 of 7 02/05/2010 16:45...