Free Electronic Circuit Schematics » LM317

12Vdc 3A Adjustable Regulator Power supply circuit with LM317

admin — Sun, 28 Feb 2010 11:38:49 +0000

regulator 12V 3A circuit

The LM317 is to provide an adjustable, positive 3-Terminal Voltage Regulator 100mA (RA87U control) or 1.5 A (Order Code UF27E and N61CA) over a range of output voltage of 1.2V to 37V. These voltage regulators are exceptionally easy to use and requires only 2 reistors external output set. Both line and load regulation are better established than standard regulators. Protection against overload is fully furnished with on-chip current limiting, thermal protection and safe area. This will remain fully functional even if the adjustment terminal is disconnected, making it virtually blow-out. Order UF27E comes in a TO-220-bag style. Order RA87U comes in a TO-92-style bag. Order N61CA comes in a TO-263-bag style.

Adjustable switching regulator circuit with LM317

admin — Fri, 24 Jul 2009 09:57:31 +0000

IC LM317 adjustable 3-terminal positive voltage regulator is able, the services of a current of 1.5 A on voltage 1.2 Vdc to 37 Vdc benefits. It is extremely easy to use and needs only two external resistors, the output voltage. Moreover, both the line and load regulation are better as a standard of regulation. Similarly, the LM317 is packaged in a standard transistor package, the easy and processed.

switching regulator with LM317 circuit

In addition to the price increase as regulatory authorities, protection against overloads only offers LM317 integrated circuits.

On the chip are the limits, thermal protection against overload for the protection and security. All protection circuits against overloads remains fully operational even if the terminal is adaptation.

Piture below show is output voltage formula for your adjustable and LM317 pinout

LM317 pinout and formula

Detials circuit
I have the voltage regulator, two of my mobile phone cigarette lighter circuit. He has a lot of others, and the voltage can easily be adapted by using a potentiometer. The LM317T is a tension, and should reach about 14 volts without problems. There can be up to 1 ampere, but you need a heat sink on the voltage.

5Vdc 2A high current regulator circuit with LM317

admin — Sat, 04 Jul 2009 11:32:16 +0000

: High current voltage regulator circuit

The electronic circuit for DC voltage 5-12 Volts or -12Volts regulator isolated from double LM317 IC-12V. Power supply for 4V to 6V, current 0.3A.

Details of this circuits.

A power supply of low voltage 5V. function of regulation by LM317 When +5VDC want but the total of the input voltage is 5.1V only slightly.

Heavy possible that we see in this fuel system low-voltage devices to regulation by the LM317.

The circuitry by low job control have low voltage drop in the circuit a lot. The important point for this new type of circuit use IC LM317 very popular. Then make sure that no heavy equipment safely. If the circle of thinking, the use of LEDs ensures that a voltage regulated then mainly in the direction of the work of the racetrack. Normally, this route, the input voltage of 5.1V to 12V. Q1 TIP42 also improve current tallly carry up to 2A. Completion of this course is really useful, a friend of the joy of the Lord Mail.

Applications
1.Flyback controller
2. Multiple-output regulator
3. Simply promoting regulator
4. Forward Converter