What is IC 723 voltage regulator?
The IC 723 is a general purpose, extremely versatile voltage regulator IC, which can be used for making various types of regulated power supplies such as: The minimum voltage that can be achieved from IC 723 Regulator Circuit is 2 V, and the maximum is around 37 V.
How to connect IC 723 to an external transistor?
The answer is to make use of another 8.5 V supply for your device 723 and a lower voltage supply to the external transistor. Instead of working with individual transformer windings for the a pair of supplies, the supply source to the IC 723 is basically extracted through a peak rectifier network comprising of D1/C1.
How to use a potentiometer to stabilize the IC 723?
The potentiometer can then be used for accurately setting or adjusting the internal reference level of the IC 723, and therefore a stabilized output from the IC in the following manner: Gradually lowering the slider center arm of the pot towards ground interacts with the inverting pin of the opamp to raise the output voltage
What power supply should I use for the IC LM723?
The circuit should be powered by a minimum of 8.5 volts; lower voltages that this might affect the operation of the IC LM723. We advise to employ a supply that is higher than the lamp voltage specs by at least 3 volts.
The 723 voltage regulator is commonly used for series voltage regulator applications. It can be used as both positive and negative voltage regulator. It has an ability to provide up to 150 mA of current to the load, but this can be increased more than 10A by using power transistors.
What is IC 723 1 point?
Explanation: The IC 723 is a voltage regulator, which can act as both a low voltage regulator as well as a high voltage regulator. Output can be set between 7-37 volts. 7 volts is the reference starting voltage.
Which type of voltage regulator is IC 723 pin?
IC 723 is used as an op-amp voltage regulator. Output voltage range: 2 V to 37 V. Output current: up to 150 mA.
What output voltage can be obtained from IC 723 regulator?
The figure shown below is a positive voltage regulator with an IC 723. The output voltage can be set to any desired positive voltage between (7-37) volts. 7 volts is the reference starting voltage.
What are the different features of IC 723?
Features of IC723:
- Unregulated dc supply voltage at the input between 9.5V & 40V.
- Adjustable regulated output voltage between 2 to 3V.
- Maximum load current of 150 mA (ILmax = 150mA).
- With the additional transistor used, ILmax upto 10A is obtainable.
- Positive or Negative supply operation.
How many pins does an IC 723 voltage regulator has Mcq?
How many pins does an IC 723 voltage regulator have? 39).
What is the reason for the thermal shutdown of IC regulator?
State the reason for thermal shutdown of IC regulator? Explanation: The IC regulator has a temperature sensor (built-in) which turn off the IC, when it becomes too hot (usually 125oC-150oC). The output current will drop and remains there until the IC has cooled significantly.
What are the features of IC 723?
Features of IC 723: Input and output short-circuit protection is provided. It has good line and load regulation (0.03%). Wide variety of applications of series, shunt, switching and floating regulator. Low temperature drift and high ripple rejection.
Is IC 723 a fixed voltage regulator?
Features of IC723: Adjustable regulated output voltage between 2 to 3V.
How many types of IC voltage regulators are there?
There are three types of IC voltage regulators: IC linear voltage regulators, IC switching voltage regulators, and DC/DC converter chips. IC linear voltage regulators use an active pass element to reduce the input voltage to a regulated output voltage.
Why switching regulators are more efficient?
However, for a switching regulator, the source delivers power only over some fraction of a switching period. During this time, some of the power delivered by the source is delivered to the load and the rest is delivered to energy storage circuit elements – very little is wasted.
What is pinch off voltage Mcq?
What is pinch off voltage? Explanation: Once the voltage difference between the gate and source goes near to the pinch off voltage, the channel will get pinched off resulting in off state of the FET, which makes no conventional current flow. 2.
What are the functional blocks of IC 723 voltage regulator?
The functional block diagram of IC 723 Voltage Regulator can be divided into four major blocks: Temperature compensated voltage reference source, which is zener diode. An op-amp circuit used as an error amplifier. A series pass transistor capable of a 150 mA output current. Transistor used to limit output current.
What is the transformer voltage specification for IC 723?
The transformer voltage specification as a result has to be a minimum of 7 V to allow an 8.5 V source to the IC 723.
What is the maximum supply voltage of an IC voltage regulator?
The maximum supply voltage is 40 V, and the line and load regulations are each specified as 0.01%. We have already explained in detail about the basics of voltage regulators and IC voltage regulators. Let us take a look at one of the most popular IC voltage regulators, the 723 Voltage Regulator IC.