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shunt voltage regulator (for 79 Honda Goldwing)

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Guest
Hi,

I've tried posting this in a lot of places. One of your members suggested this site even though I have a Honda.

I have a 79 Honda Goldwing and the voltage regulator is dead. I've tried replacing it with a used regulator (dead, too). Battery is brand new. What I would like is a cheap, new, voltage regulator that will work on the bike. The regulator is a plain, old fashioned, shunt regulator (when the voltage goes to high, it shunts (shorts) current to ground). The rectifier is not built in, so again, all I need is the regulator. Is there something I can use from the automotive industry? Make, model, year? I'm thinking car because it's cheaper and probably able to divert more current (thus more durable). I can do wiring mods.

Any help would be appreciated.

Thanks.

Robert Newton
 
Robert;
Shunt regulator's are simple, and cheap to make. You need to find a GOOD electronics supply store and your set. Shunt regulator's can work with the AC from your alternator or with the DC if your bike has a generator. The process is simple. You will need Zenner diode,s and possibly a resistor depending on the max current that the chargeing system put's out. This will be in watts and will be in the spec,s section of the shop manual for your bike. Zenner diodes will pass an OVERAGE of their rated voltage. That is if you have a 15 volt Zenner it will only allow anything over 15 volts to pass through it. If you have an alternator on your bike and say 80 AC volts gives you the 15 volts DC that you need, but at peak rpm your alternator puts out 100 volts AC then a 80 volt Zenner diode will pass the extra 20 volts to ground and clamp your AC at 80 volts. There are other semiconductors that will do this as well. SCR,s and some power switching transistor,s will also act this way. Most library's will have a book called American Radio Relay League Handbook. As I am a radio operator I have this book and It will show you everything you need to know about AC to DC converstion and regulation. Also most staff that work at electronic supply store's ( not Radio Shack) will be able to help out with this problem as well. Good luck
Keith
78 GS1000ec, 84 GS1150ese
 
Hi,

Thanks for the reply. I'm being lazy here as I actually work in electronics, hence the "I can modify," comment. I am trying to avoid having to make one myself, mainly because I'm lazy when it comes to calculations. The power is already rectified, so D.C., and I don't think the voltage goes over 20 or so (could be the battery holding it down).

Thanks again for any and all replies.

Robert Newton
 
Hi I have a reg for Goldwing
High Power Reg model RS21 12 V kokusan denki co.
has three wires yel/green/black
Checks ok with v meter diode test $20 + 5 shipping if interested
 
SqDancerLynn1 said:
Hi I have a reg for Goldwing
High Power Reg model RS21 12 V kokusan denki co.
has three wires yel/green/black
Checks ok with v meter diode test $20 + 5 shipping if interested
Click to expand...

That should fit, although officially he needs an RR29. Searched the internet for replacements, but all manufacturers seem to make them with built-in rectifier.

I found a 78 GL1000 wiring diagram with a separate regulator. It has three wires:

GL1000wiring.jpg
 
Just thinking :idea: Electronic Voltage reg from a 70s-80's Chrysler prod would probably work Loads of them in the junkyards. Case is ground has an input and output, if you get one from the junkyard get the wiring harness plug
 
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