• Country
• Great Britain (UK)

• Manufacturer / Brand
• Comark Electronics Ltd.; Littlehampton

• Year
• 1964 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 339167

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Dry Batteries

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Insulation Meter 190 - Comark Electronics Ltd.;

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• The 190 portable insulation meter is designed for the direct measurement of insulation resistance and leakage current.

  The mercury battery power source has a life expectancy of more than 25,000 average operations.

  A transistor invertor generates test voltages of 500V, 250V and 100V.

  A insulation resistance of 1,000 MΩ can be measured.

  All other characteristics are in the original attached article.  

• Mentioned in
• “Electronic Engineering”, volume 36, April 1964.

• Author
• Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

• Other Models

• Here you find 5 models, 5 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Comark Electronics Ltd.; Littlehampton