Voltage regulator

[baiwan]

Shall I believe no one here knows how a separate voltage regulator is connected, checked and principle of operation?

 

[F_R]

Re: Voltage regulator

Shall I believe no one here knows how a separate voltage regulator is connected, checked and principle of operation?

Impossible to answer till somebody tells us what we are working on. "Separate voltage regulator" covers an awful lot of ground.

 

[domwebhost]

Re: Voltage regulator

Check- check the voltage at the battery at idle speed (12v) and WOT (~14.8V) If it falls ahead or behind those stats suspect it being faulty. (If it reads 12V at WOT or 16V+ WoT)

Principle of operation- To ensure that the voltage going back to the battery is within optimal range for charging and accessories. Making sure no spikes or dips in voltage which could mess up electronics.

Connected- In a variety of ways. Be more specific and we might have a wiring diagram for you

 

[baiwan]

Re: Voltage regulator

On old Johnson v-4.
Three cables: yellow to yellow of stator,
black - ground or (-)
purple - ? most probably to ignition switch-
principle - and + sense Voltage, yellow reduces V of stator - how.
I need details to check it up prior to stator installation to make sure stator won't burn.

 

[Barnacle_Bill]

Re: Voltage regulator

How old? The old ones did not have a regulator just a rectifier which is just a full wave bridge rectifier.

 

[tx1961whaler]

Re: Voltage regulator

He has an 1982 90 HP.
That motor has a rectifier, and optionally a voltage regulator (power tilt and trim models).

If you're talking about the regulator, it has an input, output, and ground reference. The output is held to a fixed voltage. The regulator does not control the stator in any way; it acts (more or less) like a constantly variable series resistor dropping voltage to maintain a constant output. It can be tested easily, if you have a variable DC voltage supply, by varying the input voltage up to around 17 volts DC and making sure the output doesn't go over about 14 volts. Since you may not have such equipment available, you can just make a sanity check and make sure neither the input nor output is shorted to ground.

I won't comment on the rectifier; I'm not sure if it is a 4 or 6 diode rectifier.

 

[baiwan]

Re: Voltage regulator

Tkank you. I'll measure if for short c's and if there isn't I'll test it on the motor. That will do.
The rectifier is familiar to me, it's o.k.