This circuit turns an AC-CDI into a DC-CDI.
An AC-CDI needs a working STATOR to charge. If the stator fails, let it be rewind or buy a new one is pretty expensive!
This circuit was designed to bypass the faulty stator by making High Voltage (around 100 to 200V) directly from the +12v battery.
When the internal SCR of the AC-CDI has been latched in ON state for a spark, only the voltage crossing a falling zero will turn it OFF again. In order to let the SCR return to blocking state, this circuit alternates ON and OFF states.
- 50 to 20,000 RPM
- Kill switch
- Power supply voltage DC 12 volts
- Current drain: 60mA to 1.3A
- 2A Fuse Protection
- Dimensions: 75 x 50 x 25mm (3 x 2 x 1 inch)
- Available in the SHOP section
FRQ solder pad:
If open (default): Frequency of the circuit is 1000Hz (equal to 6 pulses/rotation at 10000RPM)
If close: Frequency of the circuit is 500Hz (equal to 3 pulses/rotation at 10000RPM)
PWM solder pad:
If open(default): HV generator alternate ON/OFF period at 50%
If close: HV generator is 100% ON, no OFF period. /!\ This can lead to the destruction of the internal SCR of the CDI. Try this at your own risk!
Remove the KILL wire from the ACCDI and connect the Kill Switch to this Power module
If Kill input is connected to Ground: DC generator stops and Led turns ON.
Over Voltage Protection: Turn the trimmer to adjust the maximum voltage.
+180v at position N°1
+90v at position N°5
Led turns ON when OVP is active.
Transistors need a heatsink if run at 15000rpm longer then 1 minute.
VIDEOS.Click here for more info
- Version V1R2C1:
- First Version.
- Version V2R0C0:
- [soft] Improvements.