Micronta 22-220 FET Multimeter
This Radio Shack Micronta model 22-220 meter is a flea market find. Its made in the style of a Simpson or Triplett VOM, but the case is plastic, not Bakelite, so it's fairly lightweight, and a less rugged feeling meter by comparison. But it is accurate and has a nice mirrored dial face, so I do find it handy to have around.
The component side of the lower PCB showing the controls and power rotary switch. The meter is sitting upside down, so the folded down PCB is hiding the second smaller PCB at the lower right of the photo.
As found the meter had an intermittent problem where the meter needle would sometimes drift and not stay on 0. Also, after making a measurement, the needle did not immediately return to 0, but slowly drifted down, which basically made it unusable. The problem was an intermittent bent switch contact at the upper left side of the photo. |
Page created 1/1/2022
Last edit 1/12/2022
Last edit 1/12/2022