![]() ![]() USB feet switch or USB foot pedal is used through a USB connection with a computer like an additional input device. So, this foot bellows switch is normally found in labs, garages & battery charging rooms. In locations where vapors, powders, or explosive gases are there, then this switch is a reliable and safe component. When the switch & all electrical connections can be securely located outside of the hazardous area, then it is perfect for working within damp locations wherever electrical switching would be a danger. These switches are made with PVC (flexible polyvinyl chloride), sturdy to endure the scratches & knocks that appear with daily use. Once you push down on top of the bellows through your foot, then air moves down the tubing toward the switch element, where it increases a bellows within this switch to make active the electrical connections. Foot Switch Bellowsįootswitch bellows are also called air actuator that permits you to control electrical circuits securely from a distance in dangerous environments. Foot pedal potentiometers are used for controlling the speed of sewing machines, cutting machines, shearing machines, etc. Once the amount of force applied on the foot pedal will cause the electric motor to run faster or slower which will define the device or machine speed in use. Pedal Potentiometersįoot pedal potentiometers are frequently used in combination with a variable speed motor. A foot pedal switch controls the device by turning ON and OFF. This is similar to a typical footswitch or foot pedal but the main difference is, that the foot switch is operated by the foot of the user whereas the foot pedal potentiometer is used to control the device’s speed which is connected to it. Sometimes, a foot pedal potentiometer is also called variable speed footswitches. Here, each type of switch and its purpose are discussed below. There are different types of foot switches available in the market based on requirements which include the following. Similarly, once the footswitch is compressed by the foot, the contacts in the switch will be closed by connecting the electric circuit so the load or the device is turned ON. Once the pedal of the switch is not compressed with the foot, then NO (Normally Open) contacts in the switch are not closed the electric circuit is not connected, so the load or the device is turned off. This footswitch includes contact points and the switch wires are simply connected to the circuit of a device or load. The working of the foot switch is similar to any other electric switch. The base is used to give support to the foot switch. These are usually found in switches, circuit breakers, and relays. Contact BlocksĪ contact block is an essential connector simply used to make or break an electrical circuit. These pads are designed with non-skid materials like rubber material.Ĭable clamps within the foot switch are clips or mechanical devices that give support to the cable. The skid-proof pads in the switch are arranged at the bottom of the switch to give support to the entire switch from slipping. The pedal in this switch has a spring action to press easily on foot. ![]() ![]() These are available in different shapes, colors, and sizes based on the type of switch. Foot Switch Construction PedalĪ pedal in this switch is operated through the foot. The foot switch or pedal switch is constructed with different parts as shown in the diagram. When Normally Closed (NC) contacts within the switch are closed, then the circuit in the device is connected until the switch is compressed so it breaks the circuit & the machine will be turned OFF. Once this footswitch is compressed then two contacts will be closed so the electric circuit will be connected and the machine will be turned ON. When Normally Open (NO) contacts within the switch are not getting connected, then the circuit in the device is not connected, so the device will be turned OFF. This switch includes two contact points and the wires of this switch are simply connected to the circuit in a device. The working principle of this switch is similar to an electric switch.
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