A truly timeless circuit. LM317 is a versatile and highly efficient 1.2-37V voltage regulator that can provide up to 1.5A of current with a large heat sink. It?s ideal for just about any application. This was my first workbench power supply and I still use it.
Since LM317 is protected against short-circuit, no fuse is necessary. Thanks to automatic thermal shutdown, it will turn off if heating excessively. All in all, a very powerful (and affordable!) package, indeed.
Although LM317 is capable of delivering up to 37V, the circuit pictured here is limited to 25V for the sake of safety and simplicity. Any higher output voltage would require additional components and a larger heat sink.
Make sure that the input voltage is at least a couple of Volts higher than the desired output. It?s ok to use a trimmer if you?re building a fixed-voltage supply.
Problems:
Follow all the safety precautions when working with mains voltage. Insulate all connections on the transformer.
Possible uses:
Variable workbench power supply, fixed-voltage supply? Just about any possible application when no more than 1.5A is necessary.
Source :: http://www.geocities.com/tomzi.geo/lm317/lm317.htm
Related Links
Simple Top LM317 Regulator Circuit
More Circuit by IC LM317
More Circuit about LM317 power supply
variable regulated power supply
+/-12V to +/-5V Power Supply Regulator By LM317 and LM337
Regulator 1.25-30V 1A By LM317T(with PCB)
DC Power Supply 1.25V to 25V
LM317 Adjustable Regulator For batt 9V
2-30V 5Amp Power Supply Regulator With LM317,741,2SA1186
dual power supply 3V,5V,6V,9V,12,15V with LM317,LM337
Variable Dual Lab Power Supply by LM317 and LM337
power supply regulatable 0-28V 6A/8 Amp By LM317 and 2N3055
power supply regulator 1_2V-20V and 3V-6V-9V-12V 3Amp With LM317T and 2N3055
This entry was posted on Saturday, June 23rd, 2007 at 11:02 am and is filed under LM317, Power supply, Variable Regulator.
