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6R1A: Difference between revisions
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In the 6R1, the 0% zone is always the leftmost major division of the | In the 6R1, the 0% zone is always the leftmost major division of the | ||
trace. In the 6R1A, the horizontal position of the 0% zone can be set arbitrarily. | trace. In the 6R1A, the horizontal position of the 0% zone can be set arbitrarily. | ||
Internally, the 6R1A differs from the 6R1 in how its functions are implemented. The | |||
6R1 uses about seven tunnel diodes while the 6R1A uses only two tunnel diodes. The | |||
6R1 uses several Nuvistor tubes. In the 6R1A many tubes were replaced by transistors. | |||
Take for example the front end of the SIGNAL COMPARATOR board. In the 6R1 it uses two | |||
7586 Nuvistor triodes. In the 6R1A it is two NPN transistors. | |||
<gallery> | <gallery> | ||