What is the role of a series pass transistor in a regulator?

The series voltage regulator or series pass voltage regulator uses a variable element placed in series with the load. By changing the resistance of the series element, the voltage dropped across it can be varied to ensure that the voltage across the load remains constant.

What is the purpose of using an external pass transistor with an IC voltage regulator?

The external pass transistor increases the available load current by creating an additional path from input to output. The path in this case was designed for an additional 150mA, but you can obtain larger output currents by substituting other components in the circuit.

Why is it important to have a voltage regulator in your circuit?

Voltage regulators (VRs) keep the voltages from a power supply within a range that is compatible with the other electrical components. While voltage regulators are most commonly used for DC/DC power conversion, some can perform AC/AC or AC/DC power conversion as well.

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.

Why transistors are connected in series?

Two NPN transistors can be connected in series with the collector of the lower transistor connected to the emitter of the upper transistor, figure 4, which provides a way to switch off the load from two different signals. Either input can turn off the load but both need to be on for the load to be on.

What are the advantages of a series regulator over its shunt counter part?

The transistor series voltage regulator has output voltage remains constant in spite of change in temperature. It has low ripple content in the output DC voltage. It has better voltage regulation than that of shunt regulator. It has voltage sensor combined in a closed loop regulator.

What are the principles of regulating the voltage?

Examples are Step Up voltage regulator (Boost) – Raises input voltage; Step Down (Buck) – lowers input voltage; Step up/ Step Down (boost/ buck) Voltage regulator – Lowers or raises or inverts the input voltage depending on the controller; Charge pump – It provides multiples of input without using an inductor.

What are the advantages of voltage control?

Advantages

• Output voltage regulation is good (tap switching) to very good (double conversion)
• Ultrafast voltage correction speed.
• No restrictions on the number of correction cycles.
• Versatility of kVA rating, voltage and configuration.
• Very low or no regular maintenance.
• Good line isolation.

What is a DC voltage regulator?

The DC voltage regulator circuit found in many electronic devices. Both function as a power supply that provides an input voltage of the device to operate. A DC regulator is useful for stabilizing the DC output voltage due to changes in input voltage and load current.

What is regulated DC power supply?

A regulated power supply is an embedded circuit; it converts unregulated AC (Alternating Current) into a constant DC. Its function is to supply a stable voltage (or less often current), to a circuit or device that must be operated within certain power supply limits.

What is discrete power?

A discrete power supply requires a number of external components to build: a PWM controller, switching power MOSFETs, input capacitors, output capacitors and a power inductor. All of these components vary for each design. The output capacitor selection is also a critical part of the design.

What device is usually used as a stable reference voltage in a linear voltage regulator?

Zener diode
What device is typically used as a stable reference voltage in a linear voltage regulator? A Zener diode is typically used as a stable reference voltage in a linear voltage regulator.