Mystical Wonders Discussion Group

007 · Joined: 03 Aug 2005 Posts: 164 Location: Scotland

Hi

I'm quite keen to build a psionics device the main thing holding me back is I don't know what exactly this rotary potentiometer is that I need
could someone help me out perhaps with a link to an example of what I need for this

thanks

cascaroman · Joined: 16 Apr 2012 Posts: 85

A potentiometer ( /pɵˌtɛnʃiˈɒmɨtər/), informally, a pot, in electronics technology is a component, a three-terminal resistor with a sliding contact that forms an adjustable voltage divider.[1] If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

In circuit theory and measurement a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.

Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick.

Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load (see infinite switch). Instead they are used to adjust the level of analog signals (e.g. volume controls on audio equipment), and as control inputs for electronic circuits. For example, a light dimmer uses a potentiometer to control the switching of a TRIAC and so indirectly to control the brightness of lamps.

A potentiometer ( /pɵˌtɛnʃiˈɒmɨtər/), informally, a pot, in electronics technology is a component, a three-terminal resistor with a sliding contact that forms an adjustable voltage divider.[1] If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

In circuit theory and measurement a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.

Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick.

Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load (see infinite switch). Instead they are used to adjust the level of analog signals (e.g. volume controls on audio equipment), and as control inputs for electronic circuits. For example, a light dimmer uses a potentiometer to control the switching of a TRIAC and so indirectly to control the brightness of lamps.

007 · Joined: 03 Aug 2005 Posts: 164 Location: Scotland

is it these that I need

http://www.ebay.co.uk/itm/150K-Ohm-2W-Watt-Electrical-Rotary-Wirewound-Pots-Potentiometer-w-Knob-/330725091082?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item4d00c0670a

cascaroman · Joined: 16 Apr 2012 Posts: 85

Hi , 007
Yes , that is wait is need for Box Construction ..
CASCAROMAN

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