Simple and crude DIY regulator

[rikard]

Thank's for schematic

Cheers

Any update on this one

Not by me, mine is still working. If it breaks, I might make a new design with FETs. Until then, I hope someone else will find inspiration, search the internet, do some thinking, and puplish a better design.

[crt]

actually, i don't have a aprilia
but while searching for R/R i found your schema

Mine just run in 50% progress
i had "delete" one SCR and Diode, because my poor bike only had a single phase


p.s
about FETs, is there any advantage over the SCR ?
i'd love to be a "prototype" if you make a schematic with those FETs

[rikard]

actually, i don't have a aprilia

Well, that problem is easy to fix. I guess you'll have to start with this one

p.s
about FETs, is there any advantage over the SCR ?

Yes

FET
cooler - less heat dissipation, smaller heat sink, more options on placement on the bike
faster - easier to regulate to an exact and stable voltage
less noisy - noise can disturb other things
cooler - I have not made one and it it therefore more cool than a thyristor based regulator
cooler - less waste, waste is generally bad

Thyristor (SCR)
simple implementation - a good starting point for learning

i'd love to be a "prototype" if you make a schematic with those FETs

Then, start praying that my regulator will fail If I would make a new design I would have to try it before leaving it to anyone else... but thaks for the offer

My goal is still to inspire others to take a step and learn and share in the area of electronics, not only mechanics.
There are quite a lot of good information if you search, but there are also some misunderstandings. I would recommend a search for something like shunt mosfet regulator PMA.
If the step is to great for you, perhaps you can motivate someone else to learn, try, and share.

Cheers!

[crt]

Well, that problem is easy to fix. I guess you'll have to start with this one

Aprilia bike is very rare in my country, and even they exist the price very high

FET
cooler - less heat dissipation, smaller heat sink, more options on placement on the bike
faster - easier to regulate to an exact and stable voltage
less noisy - noise can disturb other things
cooler - I have not made one and it it therefore more cool than a thyristor based regulator
cooler - less waste, waste is generally bad

Thyristor (SCR)
simple implementation - a good starting point for learning


Then, start praying that my regulator will fail If I would make a new design I would have to try it before leaving it to anyone else... but thaks for the offer

My goal is still to inspire others to take a step and learn and share in the area of electronics, not only mechanics.
There are quite a lot of good information if you search, but there are also some misunderstandings. I would recommend a search for something like shunt mosfet regulator PMA.
If the step is to great for you, perhaps you can motivate someone else to learn, try, and share.

Cheers!

Wow, that FET really something
Thank's for your information, i'll try to search and to understand how its works

p.s
can i post your previous schema to my local forum ? (for small bike with single phase)

i'm little concern about turn off ignition while engine still running
can i put a caps before those devider at input ingition ? for delaying purpose (maybe about 2-4 second)
or you have a suggestion about it ?

sorry for my poor English

[johndylan1000]

Is there any way you could give me a schematic a little easier to read, Im kinda new to electronics and need to build this reg for my bike. I understand most of schematic and would like it if I could see a more detailed parts list also. I live in rule Mexico and have a hard time getting some electronic parts.

[TimeBandit]

If parts are not easy to acquire... would it not be more ideal, cheaper, faster just to buy an existing unit rather than building one??
For example all Shindengen "FH" regulators are FET-based. The "SH" are SCR based (stay away from these). Shindengen FH008, 012, & 014 are commonly found.

Regarding FET -vs- SCR .... true FET (mosfet) run cooler, but it is because they only have a 0.2v voltage drop across the component. Compare that to a typical SCR which usually has a 1.0V drop ! Regardless of load, SCR regs will run HOT because of this voltage drop across the SCR whether they in the triggered state (shunting) or not. The math of this 1v drop equates to roughly 40-60watts of wasted power in the form of component heat which must be dissipated by the heatsink fins. That's analogues of a hidden 55w light bulb running inside the reg all the time.

[rikard]

can i post your previous schema to my local forum ? (for small bike with single phase)

i'm little concern about turn off ignition while engine still running
can i put a caps before those devider at input ingition ? for delaying purpose (maybe about 2-4 second)
or you have a suggestion about it ?

I don't worry about the regulator beeing inactivated when ignition is turned off. I seldom turn off the engine at 5000 rpm, then I'd be worried. Turning off at idle, it wont do much harm if the small exess isn't shunted. Using the kill switch don't turn off the power to the reg in my setup, but as I said, I don't worry about it and stop the engine with the key. But for the really thorough designer, a capacitor would likely be a good improvement. And yes, you may republish on other sites.
By the way, my reg and the rest of the bike is still working.

Is there any way you could give me a schematic a little easier to read, Im kinda new to electronics and need to build this reg for my bike. I understand most of schematic and would like it if I could see a more detailed parts list also. I live in rule Mexico and have a hard time getting some electronic parts.

Sorry, I don't believe I have any more detailed schematics than what is already here.

If parts are not easy to acquire... would it not be more ideal, cheaper, faster just to buy an existing unit rather than building one??
For example all Shindengen "FH" regulators are FET-based. The "SH" are SCR based (stay away from these). Shindengen FH008, 012, & 014 are commonly found.

Regarding FET -vs- SCR .... true FET (mosfet) run cooler, but it is because they only have a 0.2v voltage drop across the component. Compare that to a typical SCR which usually has a 1.0V drop ! Regardless of load, SCR regs will run HOT because of this voltage drop across the SCR whether they in the triggered state (shunting) or not. The math of this 1v drop equates to roughly 40-60watts of wasted power in the form of component heat which must be dissipated by the heatsink fins. That's analogues of a hidden 55w light bulb running inside the reg all the time.

I agree, well said.