What is a constant current regulator?
The adjustable constant current regulator (CCR) is a simple, economical and robust device designed to provide a cost effective solution for regulating current in LEDs. The CCR is based on Self-Biased Transistor (SBT) technology and regulates current over a wide voltage range.
What is CCR in airport?
The Constant Current Regulator (CCR) is designed to provide precision control of runway lightning circuits. These regulators are air cooled and designed for indoor service. Key Features.
What is a current regulator called?
A constant-current diode is an electronic device that limits current to a maximal specified value for the device. It is known as a current-limiting diode (CLD) or current-regulating diode (CRD).
How does a constant current regulator work?
The regulator maintains a constant current by using a resonant network circuit. The voltage from the input transformer is transmitted to the resonant network through the brightness step relays. Current from the output transformer is variable as a factor of the voltage fed into the resonant network.
Why is current regulator used?
Unlike transforming (changing from one voltage level to another) which is usually one of the major reason for voltage regulation, current regulation is usually about keeping the current that’s being supplied constant, irrespective of variations in load resistance or input voltage.
What is CCR in lighting?
Constant current reduction (CCR) or analog dimming control the light output of the LEDs by adjusting the current flowing continuously to the LEDs. The amount of light output is approximately proportional to the current flowing through the LED.
What is airfield lighting?
Visual Flight Rules lighting systems consist of Low or Medium Intensity Runway and Approach Lighting systems that are used to guide pilots visually for a safe approach and landing. They are commonly found at public and private airfields or runways without an instrument approach.
Does a voltage regulator limit current?
When load current reaches the limit, the regulator operates in constant current mode. At this point, the regulator limits the load current to the maximum value, and the output voltage can vary from any value down to zero volts.
Does a voltage regulator control current?
The filtered power switch output voltage is fed back to a circuit that controls the power switch on and off times so that the output voltage remains constant regardless of input voltage or load current changes. …
When should a current regulator be used?
Application of Current Regulators Constant current regulators find applications in all sorts of devices from power supply circuits, to Battery charging circuits, to LED drivers and other applications where a fixed current needs to be regulated irrespective of the applied Load.
What are the different types of regulators?
Basically, there are two types of Voltage regulators: Linear voltage regulator and Switching voltage regulator.
- There are two types of Linear voltage regulators: Series and Shunt.
- There are three types of Switching voltage regulators: Step up, Step down, and Inverter voltage regulators.