Why Is My Voltage Regulator Getting Hot

Why Is My Voltage Regulator Getting Hot. So since ours are not maxed out all the time, they will not get hot. That's pretty warm to the touch, but not hot enough to burn you as you describe.

Why not to put the voltage regulator on the fan housing from haysvwrepair.com

This means the power dissipated by the lm317 is 17 x 0.15 watts = 2.55 watts. Not usually hot, but 140 degrees isn't uncommon. It's normal for the regulator to be hot, that's why it has cooling fins.

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Situational awareness combined with skill is what keeps you out of harm's way. In other words as the voltage goes high it uses contacts that send it to ground.

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Posted by 6 years ago. It's normal for the regulator to be hot, that's why it has cooling fins.

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It's normal for the regulator to be hot, that's why it has cooling fins. The first thing you have to do when s/g starts heating up is to get a voltmeter and check for the voltage across the s/g.

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The rectifiers do get hot which is why they try to place them where the heat can escape. Not usually hot, but 140 degrees isn't uncommon.

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Posted by 6 years ago. I don't have any problems with the battery going dead and it always has a charge in the battery.

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Regulator/rectifiers do get hot, that's the reason for the large heat sink. As power consumption increases, components like linear voltage regulators can heat up during normal operation.

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It still works, and i have since changed the circuit to fix the problem. Now this was happening with the car off and the ignition in the off pos.

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The regulator is now dissipating 1 watt. Now this was happening with the car off and the ignition in the off pos.

If It's In A Poor Place, Might Want To Think About Relocating It To A Spot Where It Has Airflow.

Our 65 amp vr will get warm but not burn you. The rr is simply converting excess stator output wattage (that isn't needed to run the bike and charge the battery) to heat. If he is using something like a car batery the voltage could be greater than 12v, which just for the record, is really not a good idea either because the regulator has to disipate 7v to go from 12 to 5v.

Now The Regulator Is Getting Hotter.

The voltage regulator which is internal to the alternator uses a grounding system to regulate output voltage. Put your meter in circuit and see what current is passing from your 12v supply through your regulator. So i thought i might just cut the quick connect out and make a solder connection.

Skill Is What Keeps You On Two Wheels.

These lower amp vr will get hot enough to burn you. While building it i was noticing the regulator was getting hot and didn't understand why. The first thing you have to do when s/g starts heating up is to get a voltmeter and check for the voltage across the s/g.

Let's Increase The Power Supply To 15 Volts.

The rectifiers do get hot which is why they try to place them where the heat can escape. Took cover off coil, switchbox, voltage reg area and the regulator is melted bad , drained all in bottom of motor cover area, and dripped over on bottom coil. It still works, and i have since changed the circuit to fix the problem.

That's Pretty Warm To The Touch, But Not Hot Enough To Burn You As You Describe.

Some heat is okay, however when things get too hot, the performance of the linear regulator suffers. If these contacts stick it sends battery voltage to ground all the time, hence hot feel to alternator. I know a few of you have been following my antics with my 1949 roadmaster.