Teardown - Alternator regulator relay RE-03

#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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[@micheeves-uu5cj]

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.

[@frankgrudge8823]

Love to see you do more teardowns. Your content is great btw thanks

[@js7003]

Ive been looking for this explanation for years. Thank you

[@hakimyusuf5370]

super helpful

[@dimitridemul69]

Thanks for this approch

[@audiokees4045]

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.

[@Trainwreck144]

These (with a solid state relay) make a excellent solar battery charger.

[@mightyfitness4053]

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?

[@smoke_stackz3168]

Can a n mosfet work ?

[@stephanc7192]

Interesting video!

[@chris-jb5ds]

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+

[@nirmaljitkaur8787]

Sir If we want alternator 48v output than what can we do change which components of avr

[@eno9111]

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?