Hi
I have been working on 4-pin Voltage Regulator (Single Phase) for Honda CG125. After trial & errors I learnt that, that model has dual coils in the stator, both having one end grounded to the chassis. 12-50VAC (depending upon the RPM) from one coil is fed into the Regulator Unit which converts it into 14.4V DC for charging the battery. Similary 12-50VAC from the other coil is also fed into the Regulator Unit but, it is also connected to Head Lamp & Tail Lamp via switch. The Regulator Unit have 2 circuits, one converts to 14.4VDC and the other regulates to 12-14VAC for the Lamps.
I ripped a Chinese Regulator unit and found circuit as below:
This design does not provides regulated charging voltage to the battery.
I also found a similar circuit on the net as below:
I am unable to simulate either of these circuits.
However, I came across an old Thread on AAC, http://forum.allaboutcircuits.com/threads/12v-ac-motorcycle-regulator.39419/page-8
The circuit posted by Sgt.Wookie at #153 perfectly regulates 12-50VAC to 12-14VAC, but it requires a huge 25A bridge. I also attach the spice file for this circuit.
MY CONCERNS:
1) Why the other two circuits do not simulate? I have used LT Spice and Falstad.
2) Alternatively, I would like some other circuit with minimum number of components.
Thanks in advance.
I have been working on 4-pin Voltage Regulator (Single Phase) for Honda CG125. After trial & errors I learnt that, that model has dual coils in the stator, both having one end grounded to the chassis. 12-50VAC (depending upon the RPM) from one coil is fed into the Regulator Unit which converts it into 14.4V DC for charging the battery. Similary 12-50VAC from the other coil is also fed into the Regulator Unit but, it is also connected to Head Lamp & Tail Lamp via switch. The Regulator Unit have 2 circuits, one converts to 14.4VDC and the other regulates to 12-14VAC for the Lamps.
I ripped a Chinese Regulator unit and found circuit as below:
This design does not provides regulated charging voltage to the battery.
I also found a similar circuit on the net as below:
I am unable to simulate either of these circuits.
However, I came across an old Thread on AAC, http://forum.allaboutcircuits.com/threads/12v-ac-motorcycle-regulator.39419/page-8
The circuit posted by Sgt.Wookie at #153 perfectly regulates 12-50VAC to 12-14VAC, but it requires a huge 25A bridge. I also attach the spice file for this circuit.
MY CONCERNS:
1) Why the other two circuits do not simulate? I have used LT Spice and Falstad.
2) Alternatively, I would like some other circuit with minimum number of components.
Thanks in advance.
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