Voltage Regulators Circuit Diagrams

SPECIAL TYPE VOLTAGE REGULATORS SCHEMATIC CIRCUIT DIAGRAM

Several types of voltage regulators have been produced to meet various needs. These regulators have been offered to many consumers by different names and catalog numbers. Briefly, let’s sort some examples. MC 1560, SE 550, TL 1723, LM 117, LM 137, LM 317, LM 337, MC 723, L200
etc.

Although there are some differences in the internal construction and use of all these circuits, they are the same in all basic ideas. We will briefly introduce the LM317 and LM337 positive and negative adjustable voltage regulators which are commonly used in this section and are easily found on the electronic market. Figure-3.20 shows the positive voltage regulator circuit with LM317 that produces adjustable output. Output voltage of the inverter;

SPECIAL TYPE VOLTAGE REGULATORS SCHEMATIC CIRCUIT DIAGRAM 1

Typical values ​​for the LM337 are;

SPECIAL TYPE VOLTAGE REGULATORS SCHEMATIC CIRCUIT DIAGRAM 2

In Figure-1.21, positive and negative voltage regulators giving adjustable output are given. In both circuits, the output voltage is set by resistor R2 set. The voltage values ​​that the output voltage can take depending on the value of R2 are given in the table.

SPECIAL TYPE VOLTAGE REGULATORS SCHEMATIC CIRCUIT DIAGRAM 3

LM317 and LM337 are used together to provide a regulated voltage regulator with a regulated ± 20V symmetrical output voltage. In this circuit, the positive and negative output voltages can be set independently from 1.2V to 20V.

SPECIAL TYPE VOLTAGE REGULATORS SCHEMATIC CIRCUIT DIAGRAM 4

SPECIAL TYPE VOLTAGE REGULATORS SCHEMATIC CIRCUIT DIAGRAM 5

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