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7A13: Difference between revisions
3814 used from S/N B0200000 to B0249999, LD121A used B0250000 and up
Vintage dave (talk | contribs) m (Fix manual order) |
Vintage dave (talk | contribs) (3814 used from S/N B0200000 to B0249999, LD121A used B0250000 and up) |
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A 10-turn pot for coarse selection combines with a single-turn pot for fine control. | A 10-turn pot for coarse selection combines with a single-turn pot for fine control. | ||
The resultant voltage is displayed on a 4-digit simplified DVM built around a [[Fairchild 3814]] 4½ digit DVM controller. | The resultant voltage is displayed on a 4-digit simplified DVM built around a [[Fairchild 3814]] 4½ digit DVM controller. | ||
(S/N B0250000 switched to a [[Siliconix LD121A]].) | |||
For negative values of V<sub>C</sub>, an opamp polarity inverter circuit is switched in. | For negative values of V<sub>C</sub>, an opamp polarity inverter circuit is switched in. | ||