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1949 - thermistors are placed in the barely visible gap on the outside of the center disk. A 10-to-1 enlargement of two thermistor beads is inset at the bottom left corner.

HIGH-FREQUENCY VOLTAGE STANDARD

E&MP 44.046

Electricity - High-frequency Voltage

March 11, 1949

Figure 2. A two-thermistor mount developed at the National Bureau of Standards is shown with the terminal plate at the top left corner and an extra core for large thermistor beads at the top right corner.

A diagrammatic view of a greatly enlarged section in the immediate neighborhood of a thermistor appears at the bottom right corner.

The thermistors are placed in the barely visible gap on the outside of the center disk. A 10-to-1 enlargement of two thermistor beads is inset at the bottom left corner.

The smaller unit has a diameter of about 0.015 inch with wire leads 0.001-inch[sic] in diameter.

PHOTO 17971-326


Original Caption by Science Service
© National Bureau of Standards



National Museum of American History

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