Teardown - Alternator regulator relay RE-03
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- čas přidán 2. 01. 2019
- #20 I got a weird device from a friend and decided to perform a teardown and see how its built. Its a car alternator regulator relay used to enable battery charging when the voltage is low. Although this particular model, the RE-03, is for an old car, this sort of relay is still used in many motor vehicles with a rechargeable battery to this day.
It turns out to be quite a simple and easy to understand circuit.
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Thank *#~i! for this vid! Have been looking for a tech level circuit step through that isn't either, fundamentally a totally WRONG explanation (as many here were/are) or, generalises to the point of irrelevance in learning anything.
So, it controls/varies/"regulates" the STATOR FIELD via monitoring the battery voltage ergo, regulates to a constant voltage output level . YAY! I got it!!
And also, how you 'roughed' out the reverse engineer circuit diagram drafts. Good style and, another 'how to' lesson for me. :)
As an old electrician with "basic"/rudimentary electronics knowledge, this explanation is - JUST RIGHT. Taa Mate. Good Job.
Ive been looking for this explanation for years. Thank you
Love to see you do more teardowns. Your content is great btw thanks
Thanks for this approch
super helpful
Possible the output transistor is a darlington. for use a mosfet you need a low voltage on type like a digital one otherwise it will do work bad.
These (with a solid state relay) make a excellent solar battery charger.
Ive tried making one the problem is the field voltage needs to be around 5.5v and depending on the load on the alternator between 1 amp and 4 amps. 5.5v at 2 amps gives 100 amp out and 5.5v at 4 amps gives 200 amps all at 6000 rpm 5.5v in = 14.5v out 11v in = 29v out 14.5v in =38v out I would need to use a isolated voltage / current regulator between the output B+ and case and field - as Field + goes to B+
Interesting video!
Thank you.
What would you guess the current is in the field coil?
Kind regards
In a small passenger car like the one for which this component was made for I guess it's below 10A (maybe around 5). Wikipedia says that the field current is around 10 times smaller than the alternator output current ( en.wikipedia.org/wiki/Alternator_(automotive) ). The main issue with this RE-03 part is that there is so much power dissipation on it that it ends up breaking quite easily. I had a friend swap the transistor with a proper low Rds_on MosFet and he didn't have any problems since.
@@FesZElectronics Problem with a two transistor is that the switch part do not fully turn the transistor on.
Hi, i make a regulator for my car using tip3055 but that is too hot on transistor. Could you provide a video about diy regulator for small car?
Can a n mosfet work ?
Sir If we want alternator 48v output than what can we do change which components of avr
Well the main "voltage comparator" is based around a transistor's Vbe (0.6V - not much to do about that) and a zener diode. My guess is that for the 12V system the zener is ~12V so for 48, you should get the circuit to work correctly by choosing the appropriate diode.
Can we by pass that shity voltage regulator and pump the ass out of baterrys? What wuld dual wire do in a rotor if its in series ore pararel wound?
Can you actualy use bouth magnets and field coil for centrain effects?
Can you actualy use simpel mosfet speed controler and turn alternator to brushless motor and useing a oscilator circuet to actualy switch from generator to starter motor function at centrain speed ?
Wuld that by posibel ?
Just out of curiosety .
Did you ever try use neo magnets and forced them together instead of oposite poles? Ore use just 1 set of poles what wuld the scope read exactly?