Search results
Results from the WOW.Com Content Network
R-Control limits the temperature of temperature-sensitive heating elements. Most of the heating elements are thermistors, they increase the resistance with the temperature. At a maximum permissible temperature, the heating element has a defined resistance, which is defined on the actuator.
The RMS value of an alternating current is also known as its heating value, as it is a voltage which is equivalent to the direct current value that would be required to get the same heating effect. For example, if 120 V AC RMS is applied to a resistive heating element it would heat up by exactly the same amount as if 120 V DC were applied.
HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...
A Voltage controller thyristor based dimmer rack An electrical schematic for a typical SCR-based light dimmer. A voltage controller, also called an AC voltage controller or AC regulator is an electronic module based on either thyristors, triodes for alternating current, silicon-controlled rectifiers or insulated-gate bipolar transistors, which converts a fixed voltage, fixed frequency ...
Controls for warming trays, kilns and other applications may have a higher minimum setting to provide fine control over a range useful for the application. [citation needed] An important variation of the control is the series or current sensitive type as opposed to the parallel or voltage sensitive type.
In some applications where the heating element is directly connected to the item being heated a self-regulating heater may also provide adequate temperature control of the item to be heated. However, many applications require control of two temperatures. For example, space heaters use heating elements much hotter than the room being heated. In ...
This strong market position generates substantial cash flows that support shareholder returns. Turning to the specifics, the pharmaceutical giant offers investors a 4.3% dividend yield backed by a ...
Real power is the average of the instantaneous product of voltage and current and represents the capacity of the electricity for performing work. Apparent power is the product of root mean square (RMS) current and voltage. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of ...