Switching Regulator using LM1758 A

jojo October 5, 2009 No Comments
The National Semiconductor LM 1578 A is a switching regulator which can easily be set up for such dc-to-dc voltage .conversion circuits as the buck, boost, and inverting configurations. The LM 1578 A features a unique comparator input stage...
read more

Switching Regulators Using LM 2575 and LM 2577

jojo October 5, 2009 No Comments
Switching Regulators Using LM 2575 and LM 2577 Switching regu­lators are available is different circuit configurations in­cluding the flyback, feed-forward, push-pull, and non-iso­lated single-ended or single-polarity types. Also, the switching regulators can operate in any of three modes –...
read more

Switching Voltage Regulators

jojo July 3, 2014 No Comments
Switching Voltage Regulators All of the voltage regulators we have discussed so far are series regulators, also sometimes called the linear regulators because the pass transistor used in such a regulator operates in the active region. Series regulators are...
read more

Dual Voltage Supplies

jojo July 8, 2014 4 Comments
Dual Power Supply using LM 320 and LM 340 Bipolar or dual voltage supplies can be easily designed with the help of two 3-terminal regulators. This is shown in the figure above using the IC’s LM320 and LM 340....
read more

IC 723 Voltage Regulators

jojo July 7, 2014 11 Comments
We have already explained in detail about the basics of regulated power supply, 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. The functional...
read more

LM340 Series Voltage Regulators

jojo July 7, 2014 No Comments
Three terminal voltage regulators This series is typical of the three-terminal voltage regulators. The block diagram is shown in figure. The built-in reference voltage VREF drives the non-inverting input of an op-amp. The operational amplifier consists of several stages...
read more

Adjustable Voltage Regulators

jojo July 3, 2014 8 Comments
Adjustable Voltage Regulators Some­times variable voltage is required and under such a situation adjustable voltage regulator is used. A number of IC regulators, like LM 317, LM 338, and LM 350, are adjustable regulators. They have maximum load currents...
read more

IC Voltage Regulators

jojo July 7, 2014 7 Comments
A voltage regulator is one of the most widely used electronic circuitry in any device. A regulated voltage (without fluctuations & noise levels) is very important for the smooth functioning of many digital electronic devices. A common case is...
read more

Zener Controlled Transistor Voltage Regulators

john July 2, 2014 10 Comments
The efficiency of Zener regulated power supply becomes very low when the load current is high. Under such conditions a Zener controlled transistor is always used for maintaining output voltage constant. Basically there are two types of Zener controlled...
read more

Discrete Transistor Voltage Regulators

john July 2, 2014 No Comments
Basically there are two types of transistor voltage regulators. They are (i) Series Voltage Regulators and (ii) Shunt Voltage Regulators. Each type of circuit can provide an output dc voltage that is regulated or maintained at a predetermined value...
read more