Suntan Share Quartz Crystal Manufacturing Process

September 11, 2015 Views
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Suntan Technology Company Limited
---All Kinds of Capacitors
 
There are several stages to the manufacture of quartz crystals. Essentially the manufacture of the quartz crystal starts with the production of the raw crystals. 
These complete crystals pass though stages to produce the basic blanks, which are further processed to create the crystals that operate on the right frequency. 
Finally they are encapsulated and then tested to ensure that they work as required.
 
The basic manufacturing process starts with the introduction of the raw silicon, and then progresses from that point in a logical fashion.
Below is the main manufacturing process: 
 
*Growing the crystal
*Crystal cutting and lapping
*Final dimensioning and etching
*Electrodes
*Final adjustment and sealing

For more details please check :http://www.suntan.com.hk/Quartz-Crystal/
 

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Su Suntan Phenolic Trimming Potentiometers

May 20, 2009 Views
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Suntan Technology Company Limited
---All kinds of Capacitors

Phenolic Trimming Potentiometers Features

  1. (Single Turn/ Phenolic/ Industrial)
  2. (4 Terminal S tyles)

Phenolic Trimming Potentiometers Electrical Characteristics

  1. Standard Resistance Range 100Ω - 2MΩ
  2. Resistance Tolerance ±10%, ±20%, ±30%
  3. Residual Resistance Max 5% of Nominnal Resistance, But under 30Ω
  4. Pesistance Taper Linear (B)
  5. Rated Power 0.1W
  6. Operating Voltage 50V Max
  7. Potational Life Max ±5% change in resistance after 100 unloaded rotations
  8. Load Life Max ±5% change in resistance after 3 hours loaded

Phenolic Trimming Potentiometers Pictures

 

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Su Suntan Trimmer capacitors

February 9, 2009 Views
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Suntan Technology Company Limited
---All kinds of Capacitors

Trimmer capacitors (trimmers) are miniature variable capacitors. They are designed to be mounted directly onto the circuit board and adjusted only when the circuit is built.

A small screwdriver or similar tool is required to adjust trimmers. The process of adjusting them requires patience because the presence of your hand and the tool will slightly change the capacitance of the circuit in the region of the trimmer!

Trimmer capacitors are only available with very small capacitances, normally less than 100pF. It is impossible to reduce their capacitance to zero, so they are usually specified by their minimum and maximum values, for example 2-10pF.

Trimmers are the capacitor equivalent of presets which are miniature variable resistors.

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