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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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an improved electrical resistor
Middle sentence of second paragraph is the most relevant. Otis Frank Boykin was born in 1920 in Dallas, Texas. His mother was a homemaker and his father was a carpenter. He worked as a laboratory assistant at the nearby University's aerospace laboratory. Otis attended Fisk University and Illinois Institute of Technology, but dropped out after two years because his parents could not afford his tuition. Boykin, in his lifetime, ultimately invented more than 25 electronic devices. One of his early inventions was an improved electrical resistor for computers, radios, televisions and an assortment of other electronic devices. Other notable inventions include a variable resistor used in guided missiles and small component thick-film resistors for computers.[2] --------------- So how can one improve an electrical resistor? |
#2
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an improved electrical resistor
On May 17, 6:41*am, mm wrote:
Middle sentence of second paragraph is the most relevant. Otis Frank Boykin was born in 1920 in Dallas, Texas. His mother was a homemaker and his father was a carpenter. He worked as a laboratory assistant at the nearby University's aerospace laboratory. Otis attended Fisk University and Illinois Institute of Technology, but dropped out after two years because his parents could not afford his tuition. Boykin, in his lifetime, ultimately invented more than 25 electronic devices. One of his early inventions was an improved electrical resistor for computers, radios, televisions and an assortment of other electronic devices. Other notable inventions include a variable resistor used in guided missiles and small component thick-film resistors for computers.[2] *--------------- So how can one improve an electrical resistor? A careful read of the actual patent filed for this "improved resistor" shows that the improvement was more for reliability and ease of manufacture. This also implies that the cost would be minimized for the more accurate resistors (1% etc). Search the web for patent #2972726 for more details. The patent itself is 4 pages and was dated 2/21/1961. Dan |
#3
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an improved electrical resistor
On Tue, 17 May 2011 06:41:40 -0400, mm wrote:
Middle sentence of second paragraph is the most relevant. Otis Frank Boykin was born in 1920 in Dallas, Texas. His mother was a homemaker and his father was a carpenter. He worked as a laboratory assistant at the nearby University's aerospace laboratory. Otis attended Fisk University and Illinois Institute of Technology, but dropped out after two years because his parents could not afford his tuition. Boykin, in his lifetime, ultimately invented more than 25 electronic devices. One of his early inventions was an improved electrical resistor for computers, radios, televisions and an assortment of other electronic devices. Other notable inventions include a variable resistor used in guided missiles and small component thick-film resistors for computers.[2] --------------- So how can one improve an electrical resistor? Stability and tolerance comes to mind. -- Boris |
#4
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an improved electrical resistor
mm wrote:
Middle sentence of second paragraph is the most relevant. Otis Frank Boykin was born in 1920 in Dallas, Texas. His mother was a homemaker and his father was a carpenter. He worked as a laboratory assistant at the nearby University's aerospace laboratory. Otis attended Fisk University and Illinois Institute of Technology, but dropped out after two years because his parents could not afford his tuition. Boykin, in his lifetime, ultimately invented more than 25 electronic devices. One of his early inventions was an improved electrical resistor for computers, radios, televisions and an assortment of other electronic devices. Other notable inventions include a variable resistor used in guided missiles and small component thick-film resistors for computers.[2] --------------- So how can one improve an electrical resistor? !:better stability 2:lower temperature coefficient 3:mechanically stronger. 4:Less ageing. 5:higher admissable peak voltage/current. Warn us when you produce something like that..... |
#5
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an improved electrical resistor
On May 17, 10:04*am, Sjouke Burry
wrote: mm wrote: Middle sentence of second paragraph is the most relevant. Otis Frank Boykin was born in 1920 in Dallas, Texas. His mother was a homemaker and his father was a carpenter. He worked as a laboratory assistant at the nearby University's aerospace laboratory. Otis attended Fisk University and Illinois Institute of Technology, but dropped out after two years because his parents could not afford his tuition. Boykin, in his lifetime, ultimately invented more than 25 electronic devices. One of his early inventions was an improved electrical resistor for computers, radios, televisions and an assortment of other electronic devices. Other notable inventions include a variable resistor used in guided missiles and small component thick-film resistors for computers.[2] *--------------- So how can one improve an electrical resistor? !:better stability 2:lower temperature coefficient 3:mechanically stronger. 4:Less ageing. 5:higher admissable peak voltage/current. Warn us when you produce something like that..... The invention was easier to manufacture while simultaneously lowering both self-inductance and self-capacitance. |
#6
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an improved electrical resistor
In article ,
mm wrote: So how can one improve an electrical resistor? A change of materials might allow a resistor of a given physical size to dissipate heat more effectively, or run at a higher body temperature without damage or change-of-value, or survive a catastrophic fault better (e.g. "flame-proof" construction), or be less expensive to manufacture. -- Dave Platt AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#7
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an improved electrical resistor
On May 17, 3:41*am, mm wrote:
Middle sentence of second paragraph is the most relevant. Otis Frank Boykin was born in 1920 in Dallas, Texas. His mother was a homemaker and his father was a carpenter. He worked as a laboratory assistant at the nearby University's aerospace laboratory. Otis attended Fisk University and Illinois Institute of Technology, but dropped out after two years because his parents could not afford his tuition. This is a bit misleading, because Boykin was a grad student at IIT from 1946 to 1947. Around that time, he formed the Boykin-Fruth corporation with fellow inventor Hal Frederick Fruth, PhD. (Dr. Fruth, a physicist, was perhaps best known today for telling W. Edwards Deming that Western Electric might pay him as much as $5000 a year when he got his PhD, but that they were looking for men who would be worth $50K a year to them.) |
#8
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an improved electrical resistor
On Tue, 17 May 2011 19:04:15 +0200, Sjouke Burry
wrote: mm wrote: Middle sentence of second paragraph is the most relevant. Otis Frank Boykin was born in 1920 in Dallas, Texas. His mother was a homemaker and his father was a carpenter. He worked as a laboratory assistant at the nearby University's aerospace laboratory. Otis attended Fisk University and Illinois Institute of Technology, but dropped out after two years because his parents could not afford his tuition. Boykin, in his lifetime, ultimately invented more than 25 electronic devices. One of his early inventions was an improved electrical resistor for computers, radios, televisions and an assortment of other electronic devices. Other notable inventions include a variable resistor used in guided missiles and small component thick-film resistors for computers.[2] --------------- So how can one improve an electrical resistor? !:better stability 2:lower temperature coefficient 3:mechanically stronger. 4:Less ageing. 5:higher admissable peak voltage/current. I must have really low standards if I didnt think of any of these. My ex-girlfriend tells me that's what I have. Warn us when you produce something like that..... Okay. |
#9
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an improved electrical resistor
On Tue, 17 May 2011 12:23:22 -0700 (PDT), spamtrap1888
wrote: On May 17, 3:41*am, mm wrote: Middle sentence of second paragraph is the most relevant. Otis Frank Boykin was born in 1920 in Dallas, Texas. His mother was a homemaker and his father was a carpenter. He worked as a laboratory assistant at the nearby University's aerospace laboratory. Otis attended Fisk University and Illinois Institute of Technology, but dropped out after two years because his parents could not afford his tuition. This is a bit misleading, because Boykin was a grad student at IIT from 1946 to 1947. So he had graduated from Fisk. Yes, definitely misleading. Although now I do see that it could mean what you say , I thought he only had two years of post-high school. Six years is a lot more. Wikipedia often has paragraphs out of chronlogical order and hard to follow, or even conflicting paragraphs, written by different people, I guess. Around that time, he formed the Boykin-Fruth corporation with fellow inventor Hal Frederick Fruth, PhD. (Dr. Fruth, a physicist, was perhaps best known today for telling W. Edwards Deming that Western Electric might pay him as much as $5000 a year when he got his PhD, but that they were looking for men who would be worth $50K a year to them.) Hmmm. Thanks all. Boykin was black, btw. Fisk is a historically black college. |
#10
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an improved electrical resistor
On Tue, 17 May 2011 18:23:23 -0400, mm put
finger to keyboard and composed: I must have really low standards ... My ex-girlfriend tells me that's what I have. Did you trade up to a girlfriend of a higher standard? ;-) - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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