Regulator rectifier mid 90s hondas

Hi, If it wasn't for the voltage regulator it would be AC. But the way it is set-up it will only put out DC voltage. 12v. Good Luck

normal for voltage to increase with RPM, normal for voltage to decrease as battery reaches fully charged. make sure connectors are clean and tight.

The rectifier/regulator unit is possibly faulty or you have lost an earth somewhere.Have a careful look at the wiring around the main electrics and battery area to see if a wire is detached.
Most likely to be the rectifier/regulator assembly.

The stator is essentially an alternator (generator) that produces alternating current (ac). The rectifier converts the ac currect to direct current (dc). This dc currect is not very stable and is considered noisy. Alcohol, the voltage os proportional to the engine speed (rpms). Therefore a voltage regulator is added to keep the voltage at an acceptable level and not damage anything on the circuit (battery, radio, even headlights have a shorter life if too mush voltage is sent to them. If the stator is burned out (common on bikes from the early/mid 1980s, then there is no current produced and the battery ends up powering the system when you ride. The battery will eventually die and your bike will stop running. Hope this has what you need.

Hello! It is inside the alternator...See exploded diagram...Diode rectifier assembly...It is important to know that a voltage regulator will cost around $100...An alternator $150...

Guru..........Saailer




I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

That is the sign of a typical short. It is most definitely your problem.

If it goes over 17 then there is definitely a regulator fault, regardless of what the stator is doing. The very purpose of the regulator (it 'regulates' the voltage within limits) is to NOT allow the output dc voltage to climb when the stator output rises (normal) with increased engine rpm. In other words - by nature of way it works normally, the stator AC output Voltage will rise as the engine rpm increases - it will continue to rise all the way to peak engine rpm. The Rectifier/ regulator with its double-barrel name performs two functions: the first - rectifier - converts the AC output of the Stator to DC volts - if 'UN-regulated' the DC volts would also climb proportionally to engine rpm. But that is where the second function of the Rectifier/Regulator - the Regulator - comes in. The Regulator's job is to stop the voltage rising over a certain threshold even if the stator is trying to drive it higher. It does this by 'shunting' current to ground (short circuit effectively) in a series of pulses; this controlled operation is called regulation. The limit is going to be 15V absolute max and more typically 14.5 or so. If the output rises about this value then it absolutely is NOT regulating. Failures of the regulator where they simply don't regulate and allow full voltage to pass are rare (but not impossible) - much more likely to be short or open circuit, neither or which would give the symptom you have. It still sounds almost like you maybe wired it incorrectly? The stator is inside the left crancase cover - whether or not it has its own problems, have nothing to do with the lack of regulation causing battery volts to go to 17V.