Direct Current (DCP) resistance analysis is a well established technique for tracking rapid change Liquid Mixing Molds (LMM) processes in an accurate and reproducibility manner. Through on-line detection of the touching gap between two grounded crossing wires (i.e. between a positive and negative tester wire at a positive crossing) it is achievable to establish the level of past drying and resin within the flexing region.
In general, DCC is utilized to analyze the circuit components of a circuit. This is achieved by measuring the direct current (DC) conductors exposed to the alternating current. The purpose of this test is to track the components’ changes as the alternating current flows through the circuit. A standard method is employed that involves passing the DC applied across the two types of conductors that are exposed, thereby creating the desired effect. The main differences between these two types of DCC probes are:
The first type of DCC meter is comprised of a dual contact apparatus comprised of two conductors with the top contact positioned over the source of the alternating current and the bottom contact positioned above the source of the direct current. As the path of the DC current travels across the dual contacts, it can be detected and measured. In order to generate a continuous flow of current, the DCC meter must continuously be powered. This type of device is often used to confirm the existence of power loss along with other irregularities within an electrical system. An accurate reading of this meter can be generated by placing the DCC probes in a region where they will contact and remain in contact for a predetermined amount of time, then quickly removing the probes from the area and performing another measurement.
Another type of DCC device is the single contact DCC meter, which produces a constant level output of electricity. This type of device may not generate a pulsating current or a pulse width modulation, but will still serve the purpose of providing the meter user with a stable reading of the alternating current. A single contact DCC meter can be used to measure the quantity of alternating current flowing through a system. Some single contact units can also measure the time it takes for the AC current to return to the power source. This device is useful when there are several sources of electricity for a particular system such as a telephone line, lighting system, or generator.
The most complex of DCC meters is the synchronous state direct current (SSD) unit. Unlike many of the previously mentioned types of devices, the SSD is capable of measuring the direct current as well as the alternating current. When the two paths of the DC current are coupled, the output from the first path is mixed with that of the second. This process results in the generation of a pulse width modulation, which can then be decoded by a processor. The decoded signal then gives the user the ability to read the amount of energy that is being used in the household.
The most common application of a DCC device is to create the detection of where the direct current is going so that it can be hooked up with the required wiring. For example, DCC detectors can be placed in the household to determine when electricity strikes an electrical appliance such as a washer or dryer. When the current is detected, the processor can determine whether or not to shut down the appliance or if it should run. In some cases, the DCC device can also detect when the appliances produce excessive amounts of heat, such as when an oven is baking a cake. If the current is present and excessive, the processor can turn off the appliance and replace it with another one that is operating under lower voltage.
There are three different directions that the DCC circuit can be turned in: out, in positive and in negative. Although the direction does not matter in the DC circuitry, the way the wire is physically connected to the terminal will have an impact on the output of the device. For example, the two opposite polarity terminals can cause a circuit to act like a diode. However, the polarity of the wires will not change the output if they are attached in the same way.
The most important aspect of how a DCC device works is the way the wires are connected. The most common way is through a small piece of metal called the terminal. When the wire is in the DCC mode, the metal will allow only a direct current to flow in one direction while preventing electricity from flowing the other way. To keep an electrical circuit running in one direction, the terminals must be disconnected from the power supply and turned either “on” or “off”. This is done by pulling the plug away from the circuit or pushing it towards a wall outlet.