What is a bleeding resistor?

Bleeder resistor is an electrical component that absorbs electricity in unregulated power outputs to improve voltage control. It is usually used in non -regulated direct current sources (DC). The Bleeder resistor can be eliminated in regulated low -voltage power supply and is not required in linear voltage regulators or power supply with switches with fast cycle control to maintain the stable DC voltage. High voltage may be difficult to regulate using electronic controllers. The circuit with a flyback transformer can use the vent resistor to maintain almost constant high voltage for the TVs of the cathode rays (CRT) and oscilloscopes. The rectifier receives AC in the form of sinus wool to generate either half wave or full wave pulsating direct current output. Instead of a positive and negative part of the sinus wave, the rectifier only positively positively versed a verse wave or even redirects a negative cycle to become another positive polOvični cycle in a process called rectification full wool. The filter after the rectifier is usually a capacitor bank that is able to maintain current loading as needed. To improve the control of the voltage of the supply power supply, the resistance of the Bleeder is required, as it reduces the voltage without loading the unregulated power supply, which closer the output voltage without load closer to the lower rated load voltage.

Converts from AC to DC transforms voltage levels due to capacitors in the filter and load. For example, due to the descending transformer providing the nominal secondary voltage 10 V AC current (VAC), which is the level of the root middle square (RMS), the output of the DC is about 15.7 direct current volts (VDC), while the nominal load may be about 10 VDC. It can be observed that the difference in the load on the load voltage is not about 6 volts (V), which is high and 38% change from any load on full load. The ideal change from without load on the output voltage of full load is 0 VDC.

Resistant resistor reduces voltage without load. Instead of 15.7 VDC, the connection of the vent resistor across the DC output may cause the voltage without loading 11 VDC. In this case, the change without full load is only about 9%, due to the nominal stress of 10 VDC

Using a full wool bridge instead of a half -wave rectifier with a half -wave diode improves power power. One diode or rectifier half wave leads to 50% less use of input alternating power, as the half -life rectifier attracts alternating power only in a positive or negative half cycle of input sinus wool. Osorial rates and resistant components do not store energy, while the filter capacitor stores energy towards the peak of AC sinus wool. The stored energy helps to maintain DC voltage equally constant as the load current.