pentagrid sentence in Hindi
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- All the ingredients for the pentagrid were now in place.
- The pentagrid proved to be a much better mixer.
- An example would be the 6A7 pentagrid converter.
- The pentagrid converter tube would oscillate and also provide signal amplification as well as frequency shifting.
- The pentagrid also featured in a UK patent ( GB426802 ) granted on 10 April 1935.
- Thus a pentagrid radio could easily be converted to a triode-hexode without any other circuit modifications.
- This was rapidly followed by the introduction of tubes specifically designed for superheterodyne operation, most notably the pentagrid converter.
- Some manufacturers that had adopted the autodyne mixer converted some, if not all, of their designs to pentagrid mixers.
- One of their popular pentagrid converter designs was the "'MX40 "', initially marketed in 1934.
- The development of the pentagrid or "'heptode "'( seven-electrode ) valve was a novel development in the mixer story.
- Tubes with more grids, such as the pentagrid converter, can be used to make transitron oscillators with higher transconductance, resulting in smaller negative resistance.
- The All American Five was to use a pentagrid converter from when it first appeared in 1934, right up until valves became obsolete when transistors took over.
- Other tubes with multiple grids beside the pentode, such as the hexode and pentagrid converter tube, have been be used to make similar negative transconductance oscillators.
- The frequency mixer was of the pentagrid converter design to save the cost of a separate detector and first audio stage were provided by a dual diode / triode combination tube.
- The pentagrid converter in either guise operated extremely well, but it suffered from the limitation that a strong signal was able to'pull'the oscillator frequency away from a weaker signal.
- It is known that Donald G . Haines of RCA applied for a patent for the pentagrid on 28 March 1933 ( subsequently granted on 29 March 1939 ) under US patent number 2, 148, 266.
- The pentagrid was part of a line of development of valves that were able to take an incoming RF signal and change its frequency to a fixed intermediate frequency, which was then amplified and detected in the remainder of the receiver circuitry.
- However, the Ferranti company of Great Britain entered the valve business with the first known UK-produced pentagrid, the "'VHT4 "', late in 1933 ( though it must have been in development, and would certainly have existed as a prototype well before that time ).
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