Contents
What is discrete voltage regulator?
Discrete Transistor Series Voltage Regulator It actually controls the input voltage magnitude and given to the output. This output is given to the feedback circuit. It is sampled by the sampling circuit and given to the comparator. There it is compared by the reference voltage and given back to the output.
What is a discrete regulator?
Naim Discrete Regulator is a series regulator, with a power transistor as the series regulating device. Output from the power transistor is monitored at the inverting input of a differential amplifier which is configured, like the subsequent stages, much like a Naim power amplifier.
What is voltage and current regulator?
A simple voltage/current regulator can be made from a resistor in series with a diode (or series of diodes). Due to the logarithmic shape of diode V-I curves, the voltage across the diode changes only slightly due to changes in current drawn or changes in the input.
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.
How does the resistance of a series regulator work?
The resistance of the transistor to current automatically adjusts depending on the output load, such that the output voltage remains constant at the desired level. In a series regulator circuit the input current has to be slightly more than the output current.
How is the load resistor set in a voltage regulator?
To correctly set the load resistor value depending on the output current and the input supply, the following data can be applied appropriately. Suppose the required output voltage is 5V, the required current is 20 mA, and the supply input is 12 V. Then using Ohms law we have:
Can a series regulator circuit be identical to a Zener circuit?
The regulation of this series regulator circuit will never be identical to the regulation of the zener circuit, because the emitter follower simply cannot possess zero output impedance. And the voltage drop through the stage has to rise marginally in response to increasing output current.
When does a voltage regulator need to stabilize?
The output current is low, which may support high current loads at the output. The stabilization can happen only for low input/output differentials. Meaning the input supply cannot be too high than the required output voltage.