A rectifier usually means a (set of) electronic components that turns AC into DC, which you need to charge a battery for instance. A regulator - well, it regulates something. Considering the category the question is posted in I'd say it regulates the charging of the battery and/or the output voltage of the rectifier.
Basically yes- It uses a rectifier in place of a regulator
Inside the voltage regulator on the alternator.
The voltage regulator/rectifier is mounted on the battery case.
nsr 125cc
The regulator/rectifier is usually at the front of the scooter. You should see it after removing the panel with the headlights.
The rectifier-regulator on a 2000 vstar 1100 classic is located on the right side of the bike. On the rear of the engine there is a large chrome cover the rectifier is behind this cover.
check for stator AC output first, check specs for your year, that has to work properly under load to go any further, then check for 12.75-13.50 VDC at the battery with it running, if it tests OK at the stator plug and shows battery voltage dropping instead of climbing at fast idle, suspect the rectifier/regulator It is impossible to test the rectifier, but it is built into the regulator/rectifier and you can test the regulator. Buy a manual!
could be a regulator if it is separate from rectifier, could be a faulty rectifier (ive had a new faulty one)
A regulator is referring to a regulator rectifier which converts the ac voltage put out by the stator to dc voltage and regulates it to a consistent voltage usually 12-14 volts dc.
behind the left side passenger footpeg
check under the front fenders
To the best of my knowledge, both the bridge rectifier and the voltage regulator are integrated into the alternator... I recently bought a refurbished alternator and the spec sheet referred to things like ripple current verification (bridge rectifier) and like regulator voltage verification which imply that both of these blocks are part of the regulator...