Place of Origin: | China |
Brand Name: | Upperbond |
Certification: | CE, ISO |
Model Number: | Maker |
Minimum Order Quantity: | 2 pcs |
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Price: | Negotiable |
Packaging Details: | Carton |
Delivery Time: | 5-8 days |
Payment Terms: | T/T, Western Union, MoneyGram, Paypal |
Supply Ability: | 10000 pcs/month |
Qty. On Each Machine: | 1 | Machine Applicable: | Cigarette Maker |
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Sample: | Only When Charged | Payment Terms: | 50% Front Payment |
Position: | Garniture | Sharpened Edge: | None |
High Light: | Kretek Machine Silicon Transistor,Cigarette Machine High Frequency Transistor |
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Silicon Transistor
The first working silicon transistor was developed at Bell Labs on January 26, 1954, by Morris Tanenbaum. The first commercial silicon transistor was produced by Texas Instruments in 1954. This was the work of Gordon Teal, an expert in growing crystals of high purity, who had previously worked at Bell Labs.
High-Frequency Transistor
The first high-frequency transistor was the surface-barrier germanium transistor developed by Philco in 1953, capable of operating up to 60 MHz. These were made by etching depressions into an n-type germanium base from both sides with jets of Indium(III) sulfate until it was a few ten-thousandths of an inch thick. Indium electroplated into the depressions formed the collector and emitter.
Point-Contact Transistor
In 1948, the point-contact transistor was independently invented by German physicists Herbert Mataré and Heinrich Welker while working at the Compagnie des Freins et Signaux Westinghouse, a Westinghouse subsidiary located in Paris. Mataré had previous experience in developing crystal rectifiers from silicon and germanium in the German radar effort during World War II. Using this knowledge, he began researching the phenomenon of "interference" in 1947.
Contact Person: Winnie
Tel: +8613763302491
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