octal base meaning in Hindi

Examples

1. Relays were historically manufactured in a vacuum tube form, and industrial grade relays continue to use the octal base for their pinout.
2. Some low-power reflex klystrons such as the 2K25 and 2K45 had small-diameter rigid coaxial outputs parallel to octal base pins.
3. The octal base soon caught on for glass tubes, where the large central post could also house and protect the " evacuation tip " of the glass tube.
4. The glass envelope of an octal base tube was cemented into a bakelite or plastic base with a hollow post in the center, surrounded by eight metal pins.
5. Small signal valves overwhelmingly changed from octal base tubes, notably the audio tube of choice, the 6SN7 family, to the smaller and cheaper noval base ECC81, ECC82, ECC83 ( UK, in the US known as 12AX7, 12AT7, etc . ).
6. The first types assigned using this sequence ( in the mid to late 1930's ) were less systematic and sometimes would append the US " G " and / or " GT " suffixes for octal base versions, although the base type was not always knowable from just the type number:
7. The 807 design ( with some " value engineering " to reduce production cost ) was the basis for the first application-specific horizontal sweep tubes such as the 6BG6G and 6CD6G . The redesign mainly involved the omission of some of the internal RF shielding, and the substitution of a bakelite octal base for the micanol or ceramic 5-pin.
8. The 807 was preferred to the similar 6L6 by amateur radio enthusiasts because high transient voltages on the 6L6's anode when operating in class C could cause a flashover between pins 2 and 3 on the octal base, whereas this was not a problem with the top-cap anode of the otherwise identical 807, physically distant from all the base pins.
9. Two or more elements in a single envelope were handled by adding letters after the heater identifier, in alphabetical order, so an ECH35 is a 6.3 volt heated triode plus a hexode with an octal base; a PABC80 is a Noval 300mA series-heater combination of a single low-power diode A, a pair of diodes with common cathode B, and a triode C . There were many ECCnn ( n ) 6.3V dual triodes.