(200) LM317 2~37 VDC Positive VARIABLE Voltage Regulator,TO-220, Genuine ON-Semi

Description

LM317 Variable Voltage Regulators
0817
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(200)
LM317
Variable
Voltage Regulators
Positive Output
1.2 ~ 37 Volts
@
1.5 Amps
FEATURES:
Positive
Supply Regulator
Wide 1.2 to 37 Volt Output Range
1.5
+
Amp Output
Few External Parts Required
Internal Short and Thermal Protection
Eliminates Stocking Many Fixed Values
Simple Experimenter’s Power Supply
TO-220
Manufacturer: ON-Semi
Datasheet for LM317:
https://linearparts.com/documents/LM317-on.pdf
Notes: Refer to the left schematic above,
R
2
= 96
[
V
OUT
–
1.33
]Simple formula can be used to calculate R
2
for your choice of output voltage. R
1
must be 120 Ohms. It will get you within a few percent or better. Use a trimmer if you need better precision or a panel pot if you want it to be externally adjustable.
Notes: Refer to the right schematic above. The current limiter circuit will work equally well with either a positive power supply. Since it is essentially a 2-terminal assemby, you can use with either a positive or negative supply simply by observing polarity. Replace the fixed resistor with a variable resistor and you can make a variable current source.
An
adjustable
voltage regulator and current limiter make a handy bench supply.
317-2C
*************************************
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