Song Huei New Arrival Variable Resistors
Song Huei is a Taiwanese electronic components manufacturer founded in 1981. The company specializes in the production of variable and trimming resistors of various types and purposes and has established itself as a reliable supplier for a long time.
Variable resistor (or potentiometer ) is a passive element, the resistance to electric current of which can vary from zero to the nominal value due to mechanical action on the regulator (rod or slider) in its composition. Variable resistors are used in electrical circuits of direct and alternating current, and are widely used due to the simplicity of their design and application.
There are various types of functional characteristics in Song Huei's range of variable resistors , but in practice, linear (functional characteristic "B"), and logarithmic or audio (functional characteristic "A") dependence of resistance on the angle of rotation of the engine are most common.
Variable resistors with a linear characteristic have found their application in the vast majority of cases, when the change in resistance in the electrical circuit must be strictly proportional to the applied force on the resistor engine. Variable resistors with a logarithmic dependence are used, as a rule, in audio equipment, which is associated with the peculiarities of the perception of a change in sound volume by the human ear.
The nominal values of Song Huei variable resistors are defined by a number of standard values, and are measured in ohms: 10, 20, 50, 100, 200, 500, 1k, 2k, 5k, 10k, 20k, 50k, 100k, 200k, 500k, 1M, 23M. Also, the variable resistors of this manufacturer have different types of engines, which allows them to be used in equipment for various purposes, form factor and design. Types of engines and their significant parameters for selection are shown in the figure:
Also, to expand the use cases, variable resistors can have additional functions or contacts. Depending on the functions performed, resistors are distinguished:
- single (with one row of contacts),
- double (with two rows of contacts),
- with switch
- with central fixation ,
- with sliding movement of the mobile system .
Thus, Song Huei's large selection of variable resistors can meet a wide range of requirements in the development of electronic devices. More detailed technical characteristics are presented in the Specification for variable resistors on the product page.